1
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Wan J, Sun L, Sun X, Liu C, Yang G, Zhang B, Tao Y, Yang Y, Zhang Q. Cu 2+-Dominated Chirality Transfer from Chiral Molecules to Concave Chiral Au Nanoparticles. J Am Chem Soc 2024; 146:10640-10654. [PMID: 38568727 DOI: 10.1021/jacs.4c00322] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/18/2024]
Abstract
Foreign ions as additives are of great significance for realizing excellent control over the morphology of noble metal nanostructures in the state-of-the-art seed-mediated growth method; however, they remain largely unexplored in chiral synthesis. Here, we report on a Cu2+-dominated chiral growth strategy that can direct the growth of concave chiral Au nanoparticles with C3-dominant chiral centers. The introduction of trace amounts of Cu2+ ions in the seed-mediated chiral growth process is found to dominate the chirality transfer from chiral molecules to chiral nanoparticles, leading to the formation of chiral nanoparticles with a concave VC geometry. Both experimental and theoretical results further demonstrate the correlation between the nanoparticle structure and optical chirality for the concave chiral nanoparticle. The Cu2+ ion is found to dominate the chiral growth by selectively activating the deposition of Au atoms along the [110] and [111] directions, facilitating the formation of the concave VC. We further demonstrate that the Cu2+-dominated chiral growth strategy can be employed to generate a variety of concave chiral nanoparticles with enriched geometric chirality and desired chiroptical properties. Concave chiral nanoparticles also exhibit appealing catalytic activity and selectivity toward electrocatalytic oxidation of enantiomers in comparison to helicoidal nanoparticles. The ability to tune the geometric chirality in a controlled manner by simply manipulating the Cu2+ ions as additives opens up a promising strategy for creating chiral nanomaterials with increasing architectural diversity for chirality-dependent optical and catalytic applications.
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Affiliation(s)
- Jinling Wan
- College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, China
| | - Lichao Sun
- College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, China
| | - Xuehao Sun
- College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, China
| | - Chuang Liu
- College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, China
| | - Guizeng Yang
- College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, China
| | - Binbin Zhang
- College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, China
| | - Yunlong Tao
- College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, China
| | - Yahui Yang
- College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, China
| | - Qingfeng Zhang
- College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, China
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2
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Rao A, Grzelczak M. Revisiting El-Sayed Synthesis: Bayesian Optimization for Revealing New Insights during the Growth of Gold Nanorods. CHEMISTRY OF MATERIALS : A PUBLICATION OF THE AMERICAN CHEMICAL SOCIETY 2024; 36:2577-2587. [PMID: 38680830 PMCID: PMC11049742 DOI: 10.1021/acs.chemmater.4c00271] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/30/2024] [Revised: 02/16/2024] [Accepted: 02/16/2024] [Indexed: 05/01/2024]
Abstract
In diverse fields, machine learning (ML) has sparked transformative changes, primarily driven by the wealth of big data. However, an alternative approach seeks to mine insights from "precious data", offering the possibility to reveal missed knowledge and escape potential knowledge traps. In this context, Bayesian optimization (BO) protocols have emerged as crucial tools for optimizing the synthesis and discovery of a broad spectrum of compounds including nanoparticles. In our work, we aimed to go beyond the commonly explored experimental conditions and showcase a workflow capable of unearthing fresh insights, even in well-studied research domains. The growth of AuNRs is a nonequilibrium process that remains poorly understood despite the presence of well-established seeded growth protocols. Traditional research aimed at understanding the mechanism of AuNR growth has primarily relied on altering one reaction condition at a time. While these studies are undeniably valuable, they often fail to capture the synergies between different reaction conditions, thus constraining the depth of insights they can offer. In the present study, we exploit BO, to identify diverse experimental conditions yielding AuNRs with similar spectroscopic characteristics. Notably, we identify viable and accelerated synthesis conditions involving elevated temperatures (36-40 °C) as well as high ascorbic acid concentrations. More importantly, we note that ascorbic acid and temperature can modulate each other's undesirable influences on the growth of AuNRs. Finally, by harnessing the power of interpretable ML algorithms, complemented by our deep chemical understanding, we revisited the established hierarchical relationships among reaction conditions that impact the El-Sayed-based growth of AuNRs.
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Affiliation(s)
- Anish Rao
- Centro
de Física de Materiales CSIC-UPV/EHU, Paseo Manuel de Lardizabal 5, 20018 Donostia San-Sebastián, Spain
| | - Marek Grzelczak
- Centro
de Física de Materiales CSIC-UPV/EHU, Paseo Manuel de Lardizabal 5, 20018 Donostia San-Sebastián, Spain
- Donostia
International Physics Center (DIPC), Paseo Manuel de Lardizabal 4, 20018 Donostia-San Sebastián, Spain
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3
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Nobeyama T, Tataka K, Mori M, Murakami T, Yamada Y, Shiraki K. Synthesis of Butterfly-Like Shaped Gold Nanomaterial: For the Regulation of Liquid-Liquid Phase-Separated Biomacromolecule Droplets. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2023; 19:e2300362. [PMID: 37596729 DOI: 10.1002/smll.202300362] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/12/2023] [Revised: 07/31/2023] [Indexed: 08/20/2023]
Abstract
Nanotechnology is a critical tool to manipulate the sophisticated behavior of biological structures and has provided new research fields. Liquid-liquid phase-separated (LLPS) droplets gather attention as basic reaction fields in a living cell. Droplets play critical roles in regulating protein behavior, including enzyme compartmentalization, stress response, and disease pathogenesis. The dynamic manipulation of LLPS droplet formation/deformation has become a crucial target in nanobiotechnology. However, the development of nanodevices specifically designed for this purpose remains a challenge. Therefore, this study presents butterfly-shaped gold nanobutterflies (GNBs) as novel nanodevices for manipulating LLPS droplet dynamics. The growth process of the GNBs is analyzed via time-lapse electroscopic imaging, time-lapse spectroscopy, and additives assays. Interestingly, GNBs demonstrate the ability to induce LLPS droplet formation in systems such as adenosine triphosphate/poly-l-lysine and human immunoglobulin G, whereas spherical and rod-shaped gold nanoparticles exhibit no such capability. This indicates that the GNB concave surface interacts with the droplet precursors facilitating the LLPS droplet formation. Near-infrared-laser irradiation applied to GNBs enables on-demand deformation of the droplets through localized heat effects. GNB regulates the enzymatic reaction of lysozymes. The innovative design of GNBs presents a promising strategy for manipulating LLPS dynamics and offers exciting prospects for future research.
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Affiliation(s)
- Tomohiro Nobeyama
- Faculty of Pure and Applied Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki, 305-8573, Japan
| | - Koji Tataka
- Graduate School of Engineering, Toyama Prefectural University, 5180 Kurokawa, Imizu, Toyama, 939-0398, Japan
- Human Life Technology Research, Toyama Industrial Technology Research and Development Center, 35-1 Iwatakeshin, Nanto, Toyama, 939-1503, Japan
| | - Megumi Mori
- Faculty of Agriculture, Kyoto University, Sakyo-ku, Kyoto, 606-8502, Japan
| | - Tatsuya Murakami
- Graduate School of Engineering, Toyama Prefectural University, 5180 Kurokawa, Imizu, Toyama, 939-0398, Japan
| | - Yoichi Yamada
- Faculty of Pure and Applied Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki, 305-8573, Japan
| | - Kentaro Shiraki
- Faculty of Pure and Applied Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki, 305-8573, Japan
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4
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Zhang L, Xu Z, Feng T, He M, Hansen TW, Wagner JB, Liu C, Cheng H. Breaking the Axis-Symmetry of a Single-Wall Carbon Nanotube During Its Growth. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2023; 10:e2304905. [PMID: 37897312 PMCID: PMC10754088 DOI: 10.1002/advs.202304905] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/20/2023] [Revised: 09/01/2023] [Indexed: 10/30/2023]
Abstract
The asymmetrical growth of a single-wall carbon nanotube (SWCNT) by introducing a change of a local atomic structure, is usually inevitable and supposed to have a profound effect on the chirality control and property tailor. However, the breaking of the symmetry during SWCNT growth remains unexplored and its origins at the atomic-scale are elusive. Here, environmental transmission electron microscopy is used to capture the process of breaking the symmetry of a growing SWCNT from a sub-2-nm platinum catalyst nanoparticle in real-time, demonstrating that topological defects formed on the side of a SWCNT can serve as a buffer for stress release and inherently break its axis-symmetrical growth. Atomic-level details reveal the importance of the tube-catalyst interface and how the atom rearrangement of the solid-state platinum catalyst around the interface influences the final tubular structure. The active sites responsible for trapping carbon dimers and providing enough driving force for carbon incorporation and asymmetric growth are shown to be low-coordination step edges, as confirmed by theoretical simulations.
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Affiliation(s)
- Lili Zhang
- Shenyang National Laboratory for Materials ScienceInstitute of Metal ResearchChinese Academy of Sciences72 Wenhua RoadShenyang110016China
| | - Ziwei Xu
- School of Materials Science and EngineeringJiangsu UniversityZhenjiang212013China
| | - Tian‐liang Feng
- School of Materials Science and EngineeringJiangsu UniversityZhenjiang212013China
| | - Maoshuai He
- College of Chemistry and Molecular EngineeringQingdao University of Science and TechnologyQingdao266042China
| | | | | | - Chang Liu
- Shenyang National Laboratory for Materials ScienceInstitute of Metal ResearchChinese Academy of Sciences72 Wenhua RoadShenyang110016China
| | - Hui‐Ming Cheng
- Shenyang National Laboratory for Materials ScienceInstitute of Metal ResearchChinese Academy of Sciences72 Wenhua RoadShenyang110016China
- Institute of Technology for Carbon NeutralityShenzhen Institute of Advanced TechnologyChinese Academy of Sciences1068 Xueyuan RoadShenzhen518055China
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5
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Park K, Ouweleen M, Vaia RA. Product Metrics for the Manufacturability of Single-Crystal Gold Nanorods via Reaction Engineering. ACS APPLIED MATERIALS & INTERFACES 2023. [PMID: 37917804 DOI: 10.1021/acsami.3c10094] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/04/2023]
Abstract
Colloidal gold nanorods (AuNRs) are integral to a diverse array of technologies, ranging from plasmonic imaging, therapeutics, and sensors to large-area coatings, catalysts, filters, and optical attenuators. Different lab-scale strategies are available to fabricate AuNRs with a broad range of physiochemical properties; however, this is achieved at the cost of synthetic robustness and scalability, which limit broad adoption in these technologies. To address this, Product Metrics (Structural Precision, Shape Yield, and Reagent Utilization), measurable with UV-vis-NIR spectroscopy, are defined to evaluate the efficiency of AuNR production. The dependency of these metrics on reaction formulation (reagent concentrations, pH, and T) is established and used to develop a two-step method based on optimizing symmetry breaking of seed particles, followed by the controlled extension of AuNR length and volume. Reagent concentrations and their relative molar ratios with respect to HAuCl4 are adjusted for each step to optimize these adversarial processes. Based on these correlations, we successfully demonstrate the production of highly concentrated AuNRs with targeted volume and aspect ratio while reducing particle impurities and shape dispersity to less than 4 and 10%, respectively, by employing a rationalized formulation that maximizes both product quality and Reagent Utilization. This results in a product density of 1.6 mg/mL, which is 20 times higher than that of conventional literature methods, with commensurate reduction in environmental waste products.
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Affiliation(s)
- Kyoungweon Park
- Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson AFB, Ohio 45433-7702, United States
- UES, Inc., Dayton, Ohio 45432, United States
| | - Michael Ouweleen
- Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson AFB, Ohio 45433-7702, United States
- UES, Inc., Dayton, Ohio 45432, United States
| | - Richard A Vaia
- Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson AFB, Ohio 45433-7702, United States
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6
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Wei A, OuYang J, Guo Y, Jiang S, Chen F, Huang J, Xiao Q, Wu Z. Controlled synthesis of monodisperse gold nanorods with a small diameter of around 10 nm and largest plasmon wavelength of 1200 nm. Phys Chem Chem Phys 2023; 25:20843-20853. [PMID: 37503681 DOI: 10.1039/d3cp02203j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/29/2023]
Abstract
Gold nanorods have been widely used in various fields due to their tunable anisotropic localized surface plasmon resonance (SPR) property. The facile preparation of gold nanorods with a tunable SPR wavelength extending to a near-infrared window, and at the same time, a relatively small particle size for facilitating applications especially in the biomedical field is of great value yet highly challenging. In this work, a new reducing agent, 1,6-dihydroxynaphthalene, is proposed for the synthesis of gold nanorods. The results indicate that gold nanorods with good monodispersity, high shape yield, maximum SPR wavelength of 1200 nm, and especially small diameter of around 10 nm can be acquired simultaneously. In terms of spectral and size controls, by respectively varying the experimental parameters including the amount of silver ions, reducing agents, and gold seeds not only can a good linear correlation be acquired corresponding to a SPR wavelength ranging from around 600 nm to 1200 nm, but a regular change in the particle diameter from 10.5 nm to 7.5 nm could also be observed. The structural and morphological evolutions of the particle for each changed parameter were carefully studied, and insights were gained into the growth mechanism based on the detailed analysis of particle evolution at a specific stage of the growth process.
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Affiliation(s)
- Anhua Wei
- Guangxi Key Laboratory of Natural Polymer Chemistry and Physics, College of Chemistry and Materials, Nanning Normal University, Nanning 530001, China.
| | - Jingfang OuYang
- Guangxi Key Laboratory of Natural Polymer Chemistry and Physics, College of Chemistry and Materials, Nanning Normal University, Nanning 530001, China.
| | - Yuyang Guo
- Guangxi Key Laboratory of Natural Polymer Chemistry and Physics, College of Chemistry and Materials, Nanning Normal University, Nanning 530001, China.
| | - Suju Jiang
- Guangxi Key Laboratory of Natural Polymer Chemistry and Physics, College of Chemistry and Materials, Nanning Normal University, Nanning 530001, China.
| | - Feifei Chen
- Guangxi Key Laboratory of Natural Polymer Chemistry and Physics, College of Chemistry and Materials, Nanning Normal University, Nanning 530001, China.
| | - Jun Huang
- Guangxi Key Laboratory of Natural Polymer Chemistry and Physics, College of Chemistry and Materials, Nanning Normal University, Nanning 530001, China.
| | - Qi Xiao
- Guangxi Key Laboratory of Natural Polymer Chemistry and Physics, College of Chemistry and Materials, Nanning Normal University, Nanning 530001, China.
| | - Zihua Wu
- Guangxi Key Laboratory of Natural Polymer Chemistry and Physics, College of Chemistry and Materials, Nanning Normal University, Nanning 530001, China.
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7
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Qiao L, Pollard N, Senanayake RD, Yang Z, Kim M, Ali AS, Hoang MT, Yao N, Han Y, Hernandez R, Clayborne AZ, Jones MR. Atomically precise nanoclusters predominantly seed gold nanoparticle syntheses. Nat Commun 2023; 14:4408. [PMID: 37479703 PMCID: PMC10362052 DOI: 10.1038/s41467-023-40016-3] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2022] [Accepted: 07/07/2023] [Indexed: 07/23/2023] Open
Abstract
Seed-mediated synthesis strategies, in which small gold nanoparticle precursors are added to a growth solution to initiate heterogeneous nucleation, are among the most prevalent, simple, and productive methodologies for generating well-defined colloidal anisotropic nanostructures. However, the size, structure, and chemical properties of the seeds remain poorly understood, which partially explains the lack of mechanistic understanding of many particle growth reactions. Here, we identify the majority component in the seed solution as an atomically precise gold nanocluster, consisting of a 32-atom Au core with 8 halide ligands and 12 neutral ligands constituting a bound ion pair between a halide and the cationic surfactant: Au32X8[AQA+•X-]12 (X = Cl, Br; AQA = alkyl quaternary ammonium). Ligand exchange is dynamic and versatile, occurring on the order of minutes and allowing for the formation of 48 distinct Au32 clusters with AQAX (alkyl quaternary ammonium halide) ligands. Anisotropic nanoparticle syntheses seeded with solutions enriched in Au32X8[AQA+•X-]12 show narrower size distributions and fewer impurity particle shapes, indicating the importance of this cluster as a precursor to the growth of well-defined nanostructures.
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Affiliation(s)
- Liang Qiao
- Department of Chemistry, Rice University, Houston, TX, 77005, USA
- Division of Fundamental Research, Petrochemical Research Institute, PetroChina, Beijing, 102206, China
| | - Nia Pollard
- Department of Chemistry & Biochemistry, George Mason University, Fairfax, VA, 22030, USA
| | | | - Zhi Yang
- Department of Chemistry, Rice University, Houston, TX, 77005, USA
| | - Minjung Kim
- Department of Chemistry, Rice University, Houston, TX, 77005, USA
| | - Arzeena S Ali
- Department of Chemistry, Rice University, Houston, TX, 77005, USA
| | - Minh Tam Hoang
- Department of Chemistry, Johns Hopkins University, Baltimore, MD, 21218, USA
| | - Nan Yao
- Princeton Materials Institute, Princeton University, Princeton, NJ, 08544, USA
| | - Yimo Han
- Department of Materials Science & Nanoengineering, Rice University, Houston, TX, 77005, USA
| | - Rigoberto Hernandez
- Department of Chemistry, Johns Hopkins University, Baltimore, MD, 21218, USA
- Department of Chemical and Biomolecular Engineering, Johns Hopkins University, Baltimore, MD, 21218, USA
- Department of Materials Science and Engineering, Johns Hopkins University, Baltimore, MD, 21218, USA
| | - Andre Z Clayborne
- Department of Chemistry & Biochemistry, George Mason University, Fairfax, VA, 22030, USA
| | - Matthew R Jones
- Department of Chemistry, Rice University, Houston, TX, 77005, USA.
- Department of Materials Science & Nanoengineering, Rice University, Houston, TX, 77005, USA.
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8
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Deriu C, Thakur S, Tammaro O, Fabris L. Challenges and opportunities for SERS in the infrared: materials and methods. NANOSCALE ADVANCES 2023; 5:2132-2166. [PMID: 37056617 PMCID: PMC10089128 DOI: 10.1039/d2na00930g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/19/2022] [Accepted: 03/15/2023] [Indexed: 06/19/2023]
Abstract
In the wake of a global, heightened interest towards biomarker and disease detection prompted by the SARS-CoV-2 pandemic, surface enhanced Raman spectroscopy (SERS) positions itself again at the forefront of biosensing innovation. But is it ready to move from the laboratory to the clinic? This review presents the challenges associated with the application of SERS to the biomedical field, and thus, to the use of excitation sources in the near infrared, where biological windows allow for cell and through-tissue measurements. Two main tackling strategies will be discussed: (1) acting on the design of the enhancing substrate, which includes manipulation of nanoparticle shape, material, and supramolecular architecture, and (2) acting on the spectral collection set-up. A final perspective highlights the upcoming scientific and technological bets that need to be won in order for SERS to stably transition from benchtop to bedside.
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Affiliation(s)
- Chiara Deriu
- Department of Applied Science and Technology, Politecnico di Torino 10129 Turin Italy
| | - Shaila Thakur
- Department of Applied Science and Technology, Politecnico di Torino 10129 Turin Italy
| | - Olimpia Tammaro
- Department of Applied Science and Technology, Politecnico di Torino 10129 Turin Italy
| | - Laura Fabris
- Department of Applied Science and Technology, Politecnico di Torino 10129 Turin Italy
- Department of Materials Science and Engineering, Rutgers University Piscataway NJ 08854 USA
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9
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Guo Y, Liu Q, Wei A, Jiang S, Chen F, Huang J, He Y, Huang G, Wu Z. Spectrum and size controllable synthesis of high-quality gold nanorods using 1,7-dihydroxynaphthalene as a reducing agent. Dalton Trans 2023; 52:1052-1061. [PMID: 36602082 DOI: 10.1039/d2dt03646k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
The spectrum and size controllable synthesis of gold nanorods is of great value for their widely applicable aspect ratio dependence of anisotropic surface plasmon resonance. Herein, 1,7-dihydroxynaphthalene with a relatively strong reducibility is proposed as a reducing agent for the controllable synthesis of gold nanorods. The result indicated that gold nanorods with high monodispersity, high shape yield, relatively small diameters, and maximum plasmon resonance wavelength of above 1000 nm can be acquired. More importantly, by virtue of the reducing agent used, fine and precise controls over the plasmon wavelength and diameter of the rod can be achieved via changes in experimental conditions. In particular, increases in the concentration of both silver ions and cetyltrimethylammonium bromide (CTAB) can increase the plasmon wavelength from around 600 nm to 1000 nm but respectively show a decreased diameter with the smallest value of around 14.3 nm and a mildly increased diameter from around 9.0 nm to 14.3 nm; moreover, increasing the concentration of reducing agents and gold seeds can simultaneously cause decreases in the plasmon wavelength from around 1000 nm to 800 nm and the diameters from around 14.3 nm to 9.0 and 7.3 nm, respectively. This powerful and efficient method of controllable synthesis of AuNRs could be valuable and attractive for the application of the as-obtained particles.
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Affiliation(s)
- Yuyang Guo
- Guangxi Key Laboratory of Natural Polymer Chemistry and Physics, College of Chemistry and Materials, Nanning Normal University, Nanning 530001, China.
| | - Qiuyue Liu
- Guangxi Key Laboratory of Natural Polymer Chemistry and Physics, College of Chemistry and Materials, Nanning Normal University, Nanning 530001, China.
| | - Anhua Wei
- Guangxi Key Laboratory of Natural Polymer Chemistry and Physics, College of Chemistry and Materials, Nanning Normal University, Nanning 530001, China.
| | - Suju Jiang
- Guangxi Key Laboratory of Natural Polymer Chemistry and Physics, College of Chemistry and Materials, Nanning Normal University, Nanning 530001, China.
| | - Feifei Chen
- Guangxi Key Laboratory of Natural Polymer Chemistry and Physics, College of Chemistry and Materials, Nanning Normal University, Nanning 530001, China.
| | - Jun Huang
- Guangxi Key Laboratory of Natural Polymer Chemistry and Physics, College of Chemistry and Materials, Nanning Normal University, Nanning 530001, China.
| | - Yimiao He
- Guangxi Key Laboratory of Natural Polymer Chemistry and Physics, College of Chemistry and Materials, Nanning Normal University, Nanning 530001, China.
| | - Guobao Huang
- Guangxi Key Laboratory of Agricultural Resources Chemistry and Biotechnology, College of Chemistry and Food Science, Yulin Normal University, Yulin 537000, China
| | - Zihua Wu
- Guangxi Key Laboratory of Natural Polymer Chemistry and Physics, College of Chemistry and Materials, Nanning Normal University, Nanning 530001, China.
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10
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Nguyen QN, Wang C, Shang Y, Janssen A, Xia Y. Colloidal Synthesis of Metal Nanocrystals: From Asymmetrical Growth to Symmetry Breaking. Chem Rev 2022; 123:3693-3760. [PMID: 36547384 DOI: 10.1021/acs.chemrev.2c00468] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Nanocrystals offer a unique platform for tailoring the physicochemical properties of solid materials to enhance their performances in various applications. While most work on controlling their shapes revolves around symmetrical growth, the introduction of asymmetrical growth and thus symmetry breaking has also emerged as a powerful route to enrich metal nanocrystals with new shapes and complex morphologies as well as unprecedented properties and functionalities. The success of this route critically relies on our ability to lift the confinement on symmetry by the underlying unit cell of the crystal structure and/or the initial seed in a systematic manner. This Review aims to provide an account of recent progress in understanding and controlling asymmetrical growth and symmetry breaking in a colloidal synthesis of noble-metal nanocrystals. With a touch on both the nucleation and growth steps, we discuss a number of methods capable of generating seeds with diverse symmetry while achieving asymmetrical growth for mono-, bi-, and multimetallic systems. We then showcase a variety of symmetry-broken nanocrystals that have been reported, together with insights into their growth mechanisms. We also highlight their properties and applications and conclude with perspectives on future directions in developing this class of nanomaterials. It is hoped that the concepts and existing challenges outlined in this Review will drive further research into understanding and controlling the symmetry breaking process.
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Affiliation(s)
- Quynh N. Nguyen
- School of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, Georgia30332, United States
| | - Chenxiao Wang
- School of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, Georgia30332, United States
| | - Yuxin Shang
- School of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, Georgia30332, United States
| | - Annemieke Janssen
- School of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, Georgia30332, United States
| | - Younan Xia
- School of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, Georgia30332, United States
- The Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University, Atlanta, Georgia30332, United States
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11
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Jiang Y, Salley D, Sharma A, Keenan G, Mullin M, Cronin L. An artificial intelligence enabled chemical synthesis robot for exploration and optimization of nanomaterials. SCIENCE ADVANCES 2022; 8:eabo2626. [PMID: 36206340 PMCID: PMC9544322 DOI: 10.1126/sciadv.abo2626] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/23/2022] [Accepted: 08/23/2022] [Indexed: 05/19/2023]
Abstract
We present an autonomous chemical synthesis robot for the exploration, discovery, and optimization of nanostructures driven by real-time spectroscopic feedback, theory, and machine learning algorithms that control the reaction conditions and allow the selective templating of reactions. This approach allows the transfer of materials as seeds between cycles of exploration, opening the search space like gene transfer in biology. The open-ended exploration of the seed-mediated multistep synthesis of gold nanoparticles (AuNPs) via in-line ultraviolet-visible characterization led to the discovery of five categories of nanoparticles by only performing ca. 1000 experiments in three hierarchically linked chemical spaces. The platform optimized nanostructures with desired optical properties by combining experiments and extinction spectrum simulations to achieve a yield of up to 95%. The synthetic procedure is outputted in a universal format using the chemical description language (χDL) with analytical data to produce a unique digital signature to enable the reproducibility of the synthesis.
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Affiliation(s)
- Yibin Jiang
- School of Chemistry, University of Glasgow, University Avenue, Glasgow G12 8QQ, UK
| | - Daniel Salley
- School of Chemistry, University of Glasgow, University Avenue, Glasgow G12 8QQ, UK
| | - Abhishek Sharma
- School of Chemistry, University of Glasgow, University Avenue, Glasgow G12 8QQ, UK
| | - Graham Keenan
- School of Chemistry, University of Glasgow, University Avenue, Glasgow G12 8QQ, UK
| | - Margaret Mullin
- Glasgow Imaging Facility, Institute of Infection Immunity and Inflammation, College of Medical Veterinary and Life Sciences, University of Glasgow, University Avenue, Glasgow G12 8QQ, UK
| | - Leroy Cronin
- School of Chemistry, University of Glasgow, University Avenue, Glasgow G12 8QQ, UK
- Corresponding author.
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12
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Nobile C, Cozzoli PD. Synthetic Approaches to Colloidal Nanocrystal Heterostructures Based on Metal and Metal-Oxide Materials. NANOMATERIALS 2022; 12:nano12101729. [PMID: 35630951 PMCID: PMC9147683 DOI: 10.3390/nano12101729] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/02/2022] [Revised: 04/30/2022] [Accepted: 05/09/2022] [Indexed: 12/04/2022]
Abstract
Composite inorganic nanoarchitectures, based on combinations of distinct materials, represent advanced solid-state constructs, where coexistence and synergistic interactions among nonhomologous optical, magnetic, chemical, and catalytic properties lay a basis for the engineering of enhanced or even unconventional functionalities. Such systems thus hold relevance for both theoretical and applied nanotechnology-based research in diverse areas, spanning optics, electronics, energy management, (photo)catalysis, biomedicine, and environmental remediation. Wet-chemical colloidal synthetic techniques have now been refined to the point of allowing the fabrication of solution free-standing and easily processable multicomponent nanocrystals with sophisticated modular heterostructure, built upon a programmed spatial distribution of the crystal phase, composition, and anchored surface moieties. Such last-generation breeds of nanocrystals are thus composed of nanoscale domains of different materials, assembled controllably into core/shell or heteromer-type configurations through bonding epitaxial heterojunctions. This review offers a critical overview of achievements made in the design and synthetic elaboration of colloidal nanocrystal heterostructures based on diverse associations of transition metals (with emphasis on plasmonic metals) and transition-metal oxides. Synthetic strategies, all leveraging on the basic seed-mediated approach, are described and discussed with reference to the most credited mechanisms underpinning regioselective heteroepitaxial deposition. The unique properties and advanced applications allowed by such brand-new nanomaterials are also mentioned.
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Affiliation(s)
- Concetta Nobile
- CNR NANOTEC—Institute of Nanotechnology, UOS di Lecce, c/o Campus Ecotekne, Via Monteroni, 73100 Lecce, Italy;
| | - Pantaleo Davide Cozzoli
- Department of Mathematics and Physics “Ennio De Giorgi”, c/o Campus Ecotekne, University of Salento, Via Monteroni, 73100 Lecce, Italy
- UdR INSTM di Lecce, c/o Campus Ecotekne, University of Salento, Via Arnesano, 73100 Lecce, Italy
- Correspondence:
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13
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Zhu L, Lu Z, Zhang L, He N. Seedless synthesis of gold nanorods with tunable plasmonic peaks beyond 1300 nm. CHINESE CHEM LETT 2022. [DOI: 10.1016/j.cclet.2021.11.038] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
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14
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Li Z, Kang L, Lord RW, Park K, Gillman A, Vaia RA, Schaak RE, Werner DH, Knappenberger KL. Plasmon-Mediated Chiroptical Second Harmonic Generation from Seemingly Achiral Gold Nanorods. ACS NANOSCIENCE AU 2022; 2:32-39. [PMID: 37101517 PMCID: PMC10114620 DOI: 10.1021/acsnanoscienceau.1c00014] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 04/28/2023]
Abstract
Throughout nature, simple rules explain complex phenomena, such as the selective interaction of chiral objects with circularly polarized light. Here, we demonstrate chiroptical signals from gold nanorods, which are seemingly achiral structures. Shape anisotropy due to atomic-level faceting and rounding at the tips of nanorods, which are free of chiral surface ligands, induces linear-to-circular polarization modulation during second harmonic generation. The intrinsic nanorod chiroptical response is increased by plasmon-resonant excitation, which preferentially amplifies circularly polarized harmonic signals. This structure-plasmon interplay is uniquely resolved by polarization-resolved second harmonic generation measurements. The material's second-order polarizability is the product of the structure-dependent lattice-normal susceptibility and local surface plasmon field vectors. Synthetically scalable plasmon-supporting nanorods that amplify small circular dichroism signals provide a simple, assembly-free platform for chiroptical transduction.
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Affiliation(s)
- Zehua Li
- Department
of Chemistry, The Pennsylvania State University, University Park, Pennsylvania 16802, United States
| | - Lei Kang
- Department
of Electrical Engineering and Center for Nanoscale Science, The Pennsylvania State University, University Park, Pennsylvania 16802, United States
| | - Robert W. Lord
- Department
of Chemistry, The Pennsylvania State University, University Park, Pennsylvania 16802, United States
| | - Kyoungweon Park
- Air
Force Research Laboratory, 2941 Hobson Way, Wright-Patterson Air Force
Base, Ohio 45433, United States
| | - Andrew Gillman
- Air
Force Research Laboratory, 2941 Hobson Way, Wright-Patterson Air Force
Base, Ohio 45433, United States
| | - Richard A. Vaia
- Air
Force Research Laboratory, 2941 Hobson Way, Wright-Patterson Air Force
Base, Ohio 45433, United States
| | - Raymond E. Schaak
- Department
of Chemistry, The Pennsylvania State University, University Park, Pennsylvania 16802, United States
- Department
of Chemical Engineering, The Pennsylvania
State University, University Park, Pennsylvania 16802, United States
| | - Douglas H. Werner
- Department
of Electrical Engineering and Center for Nanoscale Science, The Pennsylvania State University, University Park, Pennsylvania 16802, United States
| | - Kenneth L. Knappenberger
- Department
of Chemistry, The Pennsylvania State University, University Park, Pennsylvania 16802, United States
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15
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Zheng J, Cheng X, Zhang H, Bai X, Ai R, Shao L, Wang J. Gold Nanorods: The Most Versatile Plasmonic Nanoparticles. Chem Rev 2021; 121:13342-13453. [PMID: 34569789 DOI: 10.1021/acs.chemrev.1c00422] [Citation(s) in RCA: 136] [Impact Index Per Article: 45.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Gold nanorods (NRs), pseudo-one-dimensional rod-shaped nanoparticles (NPs), have become one of the burgeoning materials in the recent years due to their anisotropic shape and adjustable plasmonic properties. With the continuous improvement in synthetic methods, a variety of materials have been attached around Au NRs to achieve unexpected or improved plasmonic properties and explore state-of-the-art technologies. In this review, we comprehensively summarize the latest progress on Au NRs, the most versatile anisotropic plasmonic NPs. We present a representative overview of the advances in the synthetic strategies and outline an extensive catalogue of Au-NR-based heterostructures with tailored architectures and special functionalities. The bottom-up assembly of Au NRs into preprogrammed metastructures is then discussed, as well as the design principles. We also provide a systematic elucidation of the different plasmonic properties associated with the Au-NR-based structures, followed by a discussion of the promising applications of Au NRs in various fields. We finally discuss the future research directions and challenges of Au NRs.
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Affiliation(s)
- Jiapeng Zheng
- Department of Physics, The Chinese University of Hong Kong, Shatin, Hong Kong SAR 999077, China
| | - Xizhe Cheng
- Department of Physics, The Chinese University of Hong Kong, Shatin, Hong Kong SAR 999077, China
| | - Han Zhang
- Department of Physics, The Chinese University of Hong Kong, Shatin, Hong Kong SAR 999077, China
| | - Xiaopeng Bai
- Department of Physics, The Chinese University of Hong Kong, Shatin, Hong Kong SAR 999077, China
| | - Ruoqi Ai
- Department of Physics, The Chinese University of Hong Kong, Shatin, Hong Kong SAR 999077, China
| | - Lei Shao
- Beijing Computational Science Research Center, Beijing 100193, China
| | - Jianfang Wang
- Department of Physics, The Chinese University of Hong Kong, Shatin, Hong Kong SAR 999077, China
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16
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Creyer MN, Jin Z, Moore C, Yim W, Zhou J, Jokerst JV. Modulation of Gold Nanorod Growth via the Proteolysis of Dithiol Peptides for Enzymatic Biomarker Detection. ACS APPLIED MATERIALS & INTERFACES 2021; 13:45236-45243. [PMID: 34520186 PMCID: PMC8549377 DOI: 10.1021/acsami.1c11620] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/02/2023]
Abstract
Gold nanorods possess optical properties that are tunable and highly sensitive to variations in their aspect ratio (length/width). Therefore, the development of a sensing platform where the gold nanorod morphology (i.e., aspect ratio) is modulated in response to an analyte holds promise in achieving ultralow detection limits. Here, we use a dithiol peptide as an enzyme substrate during nanorod growth. The sensing mechanism is enabled by the substrate design, where the dithiol peptide contains an enzyme cleavage site in-between cysteine amino acids. When cleaved, the peptide dramatically impacts gold nanorod growth and the resulting optical properties. We demonstrate that the optical response can be correlated with enzyme concentration and achieve a 45 pM limit of detection. Furthermore, we extend this sensing platform to colorimetrically detect tumor-associated inhibitors in a biologically relevant medium. Overall, these results present a subnanomolar method to detect proteases that are critical biomarkers found in cancers, infectious diseases, and inflammatory disorders.
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Affiliation(s)
- Matthew N Creyer
- Department of Nanoengineering, University of California, La Jolla, San Diego, California 92093, United States
| | - Zhicheng Jin
- Department of Nanoengineering, University of California, La Jolla, San Diego, California 92093, United States
| | - Colman Moore
- Department of Nanoengineering, University of California, La Jolla, San Diego, California 92093, United States
| | - Wonjun Yim
- Materials Science and Engineering Program, University of California, La Jolla, San Diego, California 92093, United States
| | - Jiajing Zhou
- Department of Nanoengineering, University of California, La Jolla, San Diego, California 92093, United States
| | - Jesse V Jokerst
- Department of Nanoengineering, University of California, La Jolla, San Diego, California 92093, United States
- Materials Science and Engineering Program, University of California, La Jolla, San Diego, California 92093, United States
- Department of Radiology, University of California, La Jolla, San Diego, California 92093, United States
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17
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Rizwan Younis M, He G, Gurram B, Lin J, Huang P. Recent Advances in Gold Nanorods‐Based Cancer Theranostics. ADVANCED NANOBIOMED RESEARCH 2021. [DOI: 10.1002/anbr.202100029] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Affiliation(s)
- Muhammad Rizwan Younis
- Marshall Laboratory of Biomedical Engineering International Cancer Center Laboratory of Evolutionary Theranostics (LET) School of Biomedical Engineering Shenzhen University Health Science Center Shenzhen 518060 China
- Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province College of Optoelectronic Engineering Shenzhen University Shenzhen 518060 China
| | - Gang He
- Marshall Laboratory of Biomedical Engineering International Cancer Center Laboratory of Evolutionary Theranostics (LET) School of Biomedical Engineering Shenzhen University Health Science Center Shenzhen 518060 China
| | - Bhaskar Gurram
- Marshall Laboratory of Biomedical Engineering International Cancer Center Laboratory of Evolutionary Theranostics (LET) School of Biomedical Engineering Shenzhen University Health Science Center Shenzhen 518060 China
- Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province College of Optoelectronic Engineering Shenzhen University Shenzhen 518060 China
| | - Jing Lin
- Marshall Laboratory of Biomedical Engineering International Cancer Center Laboratory of Evolutionary Theranostics (LET) School of Biomedical Engineering Shenzhen University Health Science Center Shenzhen 518060 China
| | - Peng Huang
- Marshall Laboratory of Biomedical Engineering International Cancer Center Laboratory of Evolutionary Theranostics (LET) School of Biomedical Engineering Shenzhen University Health Science Center Shenzhen 518060 China
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18
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He H, Wu C, Bi C, Song Y, Wang D, Xia H. Synthesis of Uniform Gold Nanorods with Large Width to Realize Ultralow SERS Detection. Chemistry 2021; 27:7549-7560. [PMID: 33769618 DOI: 10.1002/chem.202005422] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2020] [Indexed: 11/11/2022]
Abstract
In this work, we successfully demonstrate high-yield synthesis of high-quality gold nanorods (Au NRs) with width ranging from 6.5 nm to 175 nm by introducing heptanol molecules as secondary templating agents during cetyltrimethylammonium bromide-templated, seeded growth method. The results show that an appropriate concentration of heptanol molecules not only alter the micellization behavior of CTAB in water, but also help silver ions impact the symmetry-breaking efficiency of additional Au-NP seeds in addition to enhancing the utilization of gold precursors. Moreover, the generality and versatility of the present strategy for synthesis of Au NRs with flexible controlled dimensions are further demonstrated by successful synthesis of Au NRs with the assistance of other fatty alcohols with properly long alkyl chains. Furthermore, when arrays of vertically aligned Au NRs with large width (AVA-Au120×90 NRs) are used as SERS substrates, they can achieve the ultralow limit of detection for crystal violet (10-16 M) with good reliability and reproducibility, and the rapid detection and identification of residual harmful substances.
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Affiliation(s)
- Hongpeng He
- State Key Laboratory of Crystal Materials, Shandong University, No. 27 Shanda South Road, Jinan, 250100, P. R. China
| | - Chenshuo Wu
- State Key Laboratory of Crystal Materials, Shandong University, No. 27 Shanda South Road, Jinan, 250100, P. R. China
| | - Cuixia Bi
- State Key Laboratory of Crystal Materials, Shandong University, No. 27 Shanda South Road, Jinan, 250100, P. R. China
| | - Yahui Song
- State Key Laboratory of Crystal Materials, Shandong University, No. 27 Shanda South Road, Jinan, 250100, P. R. China
| | - Dayang Wang
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, Changchun, 130012, P. R. China
| | - Haibing Xia
- State Key Laboratory of Crystal Materials, Shandong University, No. 27 Shanda South Road, Jinan, 250100, P. R. China
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19
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Kim J, Yoo S, Kim JM, Choi S, Kim J, Park SJ, Park D, Nam JM, Park S. Synthesis and Single-Particle Surface-Enhanced Raman Scattering Study of Plasmonic Tripod Nanoframes with Y-Shaped Hot-Zones. NANO LETTERS 2020; 20:4362-4369. [PMID: 32364741 DOI: 10.1021/acs.nanolett.0c01084] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Herein, plasmonic metal tripod nanoframes with three-fold symmetry were synthesized in a high yield (∼83%), and their electric field distribution and single-particle surface-enhanced Raman scattering (SERS) were studied. We realized such complex frame morphology by synthesizing analogous tripod nanoframes through multiple transformations. The precise control of the Au growth pattern led to uniform tripod nanoframes embedded with circle or line-shaped hot spots. The linear-shaped nanogaps ("Y"-shaped hot-zone) of the frame structures can strongly and efficiently confine the electric field, allowing for strong SERS signals. Coupled with a high synthetic yield of the targeted frame structure, strong and uniform SERS signals were obtained inside the nanoframe gaps. Remarkably, quite reproducible SERS signals were obtained with these structures-the SERS enhancement factors with an average value of 7.9 × 107 with a distribution of enhancement factors from 2.2 × 107 to 2.2 × 108 for 45 measured individual particles.
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Affiliation(s)
- Jeongwon Kim
- Department of Chemistry, Sungkyunkwan University, Suwon 16419, South Korea
| | - Sungjae Yoo
- Department of Chemistry, Sungkyunkwan University, Suwon 16419, South Korea
| | - Jae-Myoung Kim
- Department of Chemistry, Seoul National University, Seoul 08826, South Korea
| | - Sungwoo Choi
- Department of Applied Optics and Physics, Hallym University, Chuncheon 24252, South Korea
| | - Juri Kim
- Department of Chemistry, Sungkyunkwan University, Suwon 16419, South Korea
| | - So-Jung Park
- Department of Chemistry and Nanoscience, Ewha Womans University, Seoul 03760, South Korea
| | - Doojae Park
- Department of Applied Optics and Physics, Hallym University, Chuncheon 24252, South Korea
| | - Jwa-Min Nam
- Department of Chemistry, Seoul National University, Seoul 08826, South Korea
| | - Sungho Park
- Department of Chemistry, Sungkyunkwan University, Suwon 16419, South Korea
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20
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Mantri Y, Davidi B, Lemaster JE, Hariri A, Jokerst JV. Iodide-doped precious metal nanoparticles: measuring oxidative stress in vivo via photoacoustic imaging. NANOSCALE 2020; 12:10511-10520. [PMID: 32396928 PMCID: PMC7331795 DOI: 10.1039/d0nr03047c] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/19/2023]
Abstract
Accumulation of reactive oxygen and nitrogen species (RONS) can induce cell damage and even cell death. RONS are short-lived species, which makes direct, precise, and real-time measurement difficult. Biologically-relevant RONS levels are in the nM-μM scale; hence, there is a need for highly sensitive RONS probes. We previously used hybrid gold-core silver-shell nanoparticles with mM sensitivity to H2O2. These particles reported the presence of RONS via spectral shifts which could easily be quantified via photoacoustic imaging. Here, we used halide doping to tune the electrochemical properties of these materials to better match the oxidation potential of RONS. This work describes the synthesis, characterization, and application of these AgI-coated gold nanorods (AgI/AuNR). The I : Ag molar ratio, pH, and initial Ag shell thickness were optimized for good RONS detection limits. Halide doping lowers the reduction potential of Ag from to resulting in a 1000-fold increase in H2O2 and 100 000-fold increase in ONOO- sensitivity. The AgI/AuNR system also etches 45-times faster than undoped Ag/AuNR. The AgI/AuNR easily reported the endogenously produced RONS in established cells lines as well as murine models.
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Affiliation(s)
- Yash Mantri
- Department of Bioengineering University of California, San Diego, La Jolla, CA, USA
| | - Barak Davidi
- Department of Physics, Fairfield University, Fairfield, CT, USA
| | - Jeanne E Lemaster
- Department of NanoEngineering, University of California, San Diego, La Jolla, CA, USA.
| | - Ali Hariri
- Department of NanoEngineering, University of California, San Diego, La Jolla, CA, USA.
| | - Jesse V Jokerst
- Department of NanoEngineering, University of California, San Diego, La Jolla, CA, USA. and Materials Science Program, University of California, San Diego, La Jolla, CA, USA and Department of Radiology, University of California, San Diego, La Jolla, CA, USA
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21
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Roy D, Xu Y, Rajendra R, Wu L, Bai P, Ballav N. Gold Nanoearbuds: Seed-Mediated Synthesis and the Emergence of Three Plasmonic Peaks. J Phys Chem Lett 2020; 11:3211-3217. [PMID: 32251590 DOI: 10.1021/acs.jpclett.0c00838] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
We demonstrate the first successful synthesis of reasonably monodisperse and single-crystalline gold nanoearbuds (Au NEBs) using a binary surfactant mixture of cetyltrimethylammonium chloride (CTAC) and benzyldimethylhexadecylammonium chloride (BDAC) in seed-mediated growth method. We have focused on the key chemical parameters behind the formation and growth of Au NEBs to result in tunable dimensions (length, 37-77 nm; width, 4-6 nm; aspect ratio, 7-19), as a consequence of which the longitudinal surface plasmon resonance (LSPR) peak could be tuned beyond 1200 nm. The achievement of LSPR beyond 1200 nm while maintaining the dimension well below 100 nm is a challenging accomplishment in the realm of one-dimensional (1D) Au nanostructures. This earbud-like morphology additionally exhibits three plasmonic peaks, rather uncommon for 1D nanostructures, which were analyzed theoretically based on the finite element method. The new resonance peak of the Au NEB was assigned as an additional longitudinal mode intensified by the bulbous ends as well as the high aspect ratio, thereby providing conclusive evidence that it is indeed a new morphology.
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Affiliation(s)
- Debashree Roy
- Department of Chemistry, Indian Institute of Science Education and Research (IISER), Pune 411 008, India
| | - Yi Xu
- SUTD-MIT International Design Center & Science and Math Cluster, Singapore University of Technology and Design (SUTD), 8 Somapah Road, Singapore 487372
- Institute of High Performance Computing, A*STAR (Agency for Science, Technology and Research), 1 Fusionopolis Way, no. 16-16 Connexis North, Singapore 138632
| | - Ranguwar Rajendra
- Department of Chemistry, Indian Institute of Science Education and Research (IISER), Pune 411 008, India
| | - Lin Wu
- Institute of High Performance Computing, A*STAR (Agency for Science, Technology and Research), 1 Fusionopolis Way, no. 16-16 Connexis North, Singapore 138632
| | - Ping Bai
- Institute of High Performance Computing, A*STAR (Agency for Science, Technology and Research), 1 Fusionopolis Way, no. 16-16 Connexis North, Singapore 138632
| | - Nirmalya Ballav
- Department of Chemistry, Indian Institute of Science Education and Research (IISER), Pune 411 008, India
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22
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da Silva JA, Netz PA, Meneghetti MR. Growth Mechanism of Gold Nanorods: the Effect of Tip-Surface Curvature As Revealed by Molecular Dynamics Simulations. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2020; 36:257-263. [PMID: 31841340 DOI: 10.1021/acs.langmuir.9b03235] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
An understanding of the anisotropic growth mechanism of gold nanorods (AuNRs) during colloidal synthesis is critical for controlling the nanocrystal size and shape and thus has implications in tuning the properties for applications in a wide range of research and technology fields. In order to investigate the role of the cetyltrimethylammonium bromide (CTAB) coating in the anisotropic growth mechanism of AuNRs, we used molecular dynamics (MD) simulations and built a computational model that considered explicitly the effect of the curvature of the gold surface on CTAB adsorption and therefore differentiated between the CTAB arrangements on flat and curved surfaces, representing the lateral and tip facets of growing AuNRs, respectively. We verified that on a curved surface, a lower CTAB coverage density and larger intermicellar channels are generated compared to those on a flat surface. Using umbrella sampling simulations, we measured the free energy profile and verified that the environment around a curved surface corresponds to an easier migration from the solution to the gold surface for the [AuBr2]- species than does a flat surface. Long unbiased molecular dynamics simulations also corroborated the umbrella sampling results. Therefore, the [AuBr2]- diffusion through the environment of the tips is much more favorable than that in the case of lateral facets. This shows that the surface curvature is an essential component of the anisotropic growth mechanism.
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Affiliation(s)
- José A da Silva
- Grupo de Catálise e Reatividade Química - GCaR, Instituto de Química e Biotecnologia , Universidade Federal de Alagoas , Av. Lourival de Melo Mota, s/n, CEP 57072-970 , Maceió , Alagoas Brazil
| | - Paulo A Netz
- Institute of Chemistry - Federal University of the Rio Grande do Sul , Av. Bento Gonçalves, 9500 CEP , 91501-970 , Porto Alegre , Rio Grande do Sul Brazil
| | - Mario R Meneghetti
- Grupo de Catálise e Reatividade Química - GCaR, Instituto de Química e Biotecnologia , Universidade Federal de Alagoas , Av. Lourival de Melo Mota, s/n, CEP 57072-970 , Maceió , Alagoas Brazil
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23
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Wu Z, Liang Y, Cao L, Guo Q, Jiang S, Mao F, Sheng J, Xiao Q. High-yield synthesis of monodisperse gold nanorods with a tunable plasmon wavelength using 3-aminophenol as the reducing agent. NANOSCALE 2019; 11:22890-22898. [PMID: 31763638 DOI: 10.1039/c9nr07949a] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Facile synthesis of high quality gold nanorods (AuNRs) with a tunable size is of great value for applications of AuNRs in various fields and for the study of the growth mechanism of such anisotropic nanostructures. However, limitations usually exist in a specific synthetic protocol. In this work, using 3-aminophenol as the reducing agent, we present a AuNR synthetic strategy with an excellent comprehensive performance, which includes an exceptional monodispersity, a AuNR shape purity of around 99%, a conversion ratio of the gold precursor of about 91%, and an easily tuned longitudinal surface plasmon resonance wavelength ranging from 580 to ∼1050 nm. Studies on the impacts of the experimental parameters including silver ions, gold seeds, reducing agent, and cetyltrimethylammonium bromide (CTAB) revealed a profound recognition of the significant effect of the reductive atmosphere, in synergy with other parameters, in directing the growth and structural evolution of the gold seeds, thus deeply affecting the size, shape yield, monodispersity, and morphology of the final structure. These results could be immensely useful for the application and revelation of the growth mechanism of AuNRs.
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Affiliation(s)
- Zihua Wu
- College of Chemistry and Materials, Guangxi Key Laboratory of Natural Polymer Chemistry and Physics, Nanning Normal University, Nanning 530001, P. R. China.
| | - Yuling Liang
- College of Chemistry and Materials, Guangxi Key Laboratory of Natural Polymer Chemistry and Physics, Nanning Normal University, Nanning 530001, P. R. China.
| | - Linqi Cao
- College of Chemistry and Materials, Guangxi Key Laboratory of Natural Polymer Chemistry and Physics, Nanning Normal University, Nanning 530001, P. R. China.
| | - Qing Guo
- College of Chemistry and Materials, Guangxi Key Laboratory of Natural Polymer Chemistry and Physics, Nanning Normal University, Nanning 530001, P. R. China.
| | - Suju Jiang
- College of Chemistry and Materials, Guangxi Key Laboratory of Natural Polymer Chemistry and Physics, Nanning Normal University, Nanning 530001, P. R. China.
| | - Fangfang Mao
- College of Chemistry and Materials, Guangxi Key Laboratory of Natural Polymer Chemistry and Physics, Nanning Normal University, Nanning 530001, P. R. China.
| | - Jiarong Sheng
- College of Chemistry and Materials, Guangxi Key Laboratory of Natural Polymer Chemistry and Physics, Nanning Normal University, Nanning 530001, P. R. China.
| | - Qi Xiao
- College of Chemistry and Materials, Guangxi Key Laboratory of Natural Polymer Chemistry and Physics, Nanning Normal University, Nanning 530001, P. R. China. and College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, P. R. China.
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24
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Ali MRK, Wu Y, Chapman S, Ding Y. Synthesis, structure evolution, and optical properties of gold nanobones. RESEARCH ON CHEMICAL INTERMEDIATES 2019. [DOI: 10.1007/s11164-019-03884-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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25
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Moreau LM, Jones MR, Roth EW, Wu J, Kewalramani S, O'Brien MN, Chen BR, Mirkin CA, Bedzyk MJ. The role of trace Ag in the synthesis of Au nanorods. NANOSCALE 2019; 11:11744-11754. [PMID: 31183478 DOI: 10.1039/c9nr03246k] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
One of the more useful syntheses of single crystalline, uniform Au nanorods from Au spherical seeds relies on the addition of trace Ag ions, yet the role that Ag+ plays has remained both elusive and controversial, due in part to lack of knowledge of how the Ag distribution in the nanorod evolves over time. In this work, we fill in this knowledge gap by correlating the spatial distribution of Ag within Au nanorods with nanorod anisotropic growth through time-course X-ray absorption spectroscopy (XAFS)-derived atomic-level elemental coordination paired with electron microscopy for nanoscale morphological analysis. Using this method, a plausible pathway for the conversion of spherical seeds into Au nanorods is proposed. Evidence shows that the nanorod anisotropic growth is directly related to the Ag surface coverage. Anisotropy is induced early in the reaction when Ag first deposits onto the nanoparticle surface, but growth occurs more isotropically as the reaction progresses and Ag diffuses into the nanorod bulk. The results of this investigation and methods employed should be extendable to many anisotropic nanoparticle syntheses that make use of trace elemental species as shape-control additives.
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Affiliation(s)
- Liane M Moreau
- Department of Materials Science and Engineering, Northwestern University, Evanston, IL 60208, USA.
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26
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González-Rubio G, Kumar V, Llombart P, Díaz-Núñez P, Bladt E, Altantzis T, Bals S, Peña-Rodríguez O, Noya EG, MacDowell LG, Guerrero-Martínez A, Liz-Marzán LM. Disconnecting Symmetry Breaking from Seeded Growth for the Reproducible Synthesis of High Quality Gold Nanorods. ACS NANO 2019; 13:4424-4435. [PMID: 30939242 DOI: 10.1021/acsnano.8b09658] [Citation(s) in RCA: 66] [Impact Index Per Article: 13.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
One of the major difficulties hindering the widespread application of colloidal anisotropic plasmonic nanoparticles is the limited robustness and reproducibility of multistep synthetic methods. We demonstrate herein that the reproducibility and reliability of colloidal gold nanorod (AuNR) synthesis can be greatly improved by disconnecting the symmetry-breaking event from the seeded growth process. We have used a modified silver-assisted seeded growth method in the presence of the surfactant hexadecyltrimethylammonium bromide and n-decanol as a co-surfactant to prepare small AuNRs in high yield, which were then used as seeds for the growth of high quality AuNR colloids. Whereas the use of n-decanol provides a more-rigid micellar system, the growth on anisotropic seeds avoids sources of irreproducibility during the symmetry breaking step, yielding uniform AuNR colloids with narrow plasmon bands, ranging from 600 to 1270 nm, and allowing the fine-tuning of the final dimensions. This method provides a robust route for the preparation of high quality AuNR colloids with tunable morphology, size, and optical response in a reproducible and scalable manner.
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Affiliation(s)
- Guillermo González-Rubio
- CIC biomaGUNE/CIBER-BBN , Paseo de Miramón 182 , 20014 Donostia-San Sebastián , Spain
- Departamento de Química Física , Universidad Complutense de Madrid , Avenida Complutense s/n , 28040 Madrid , Spain
| | - Vished Kumar
- CIC biomaGUNE/CIBER-BBN , Paseo de Miramón 182 , 20014 Donostia-San Sebastián , Spain
| | - Pablo Llombart
- Departamento de Química Física , Universidad Complutense de Madrid , Avenida Complutense s/n , 28040 Madrid , Spain
- Instituto de Química Física Rocasolano , CSIC , Calle Serrano 119 , E-28006 Madrid , Spain
| | - Pablo Díaz-Núñez
- Instituto de Fusión Nuclear , Universidad Politécnica de Madrid , José Gutiérrez Abascal 2 , E-28006 Madrid , Spain
| | - Eva Bladt
- EMAT-University of Antwerp , Groenenborgerlaan 171 , B-2020 Antwerp , Belgium
| | - Thomas Altantzis
- EMAT-University of Antwerp , Groenenborgerlaan 171 , B-2020 Antwerp , Belgium
| | - Sara Bals
- EMAT-University of Antwerp , Groenenborgerlaan 171 , B-2020 Antwerp , Belgium
| | - Ovidio Peña-Rodríguez
- Instituto de Fusión Nuclear , Universidad Politécnica de Madrid , José Gutiérrez Abascal 2 , E-28006 Madrid , Spain
| | - Eva G Noya
- Instituto de Química Física Rocasolano , CSIC , Calle Serrano 119 , E-28006 Madrid , Spain
| | - Luis G MacDowell
- Departamento de Química Física , Universidad Complutense de Madrid , Avenida Complutense s/n , 28040 Madrid , Spain
| | - Andrés Guerrero-Martínez
- Departamento de Química Física , Universidad Complutense de Madrid , Avenida Complutense s/n , 28040 Madrid , Spain
| | - Luis M Liz-Marzán
- CIC biomaGUNE/CIBER-BBN , Paseo de Miramón 182 , 20014 Donostia-San Sebastián , Spain
- Ikerbasque (Basque Foundation for Science) , 48013 Bilbao , Spain
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27
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Joseph D, Baskaran R, Yang SG, Huh YS, Han YK. Multifunctional spiky branched gold-silver nanostars with near-infrared and short-wavelength infrared localized surface plasmon resonances. J Colloid Interface Sci 2019; 542:308-316. [DOI: 10.1016/j.jcis.2019.01.132] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2018] [Revised: 01/30/2019] [Accepted: 01/31/2019] [Indexed: 12/26/2022]
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28
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Villarreal E, Li GG, Wang H. Carving growing nanocrystals: coupling seed-mediated growth with oxidative etching. NANOSCALE 2018; 10:18457-18462. [PMID: 30272760 DOI: 10.1039/c8nr06895j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
This work presents multiple experimental evidences coherently showing that the versatile structural evolution of Au nanocrystals during seed-mediated growth under the guidance of foreign metal ions and halide-containing surfactants is essentially dictated by the dynamic interplay between oxidative etching and nanocrystal growth. Coupling nanocrystal growth with oxidative etching under kinetically controlled conditions enables the in situ surface carving of the growing nanocrystals, through which the surface topography of shape-controlled nanocrystals can be deliberately tailored on the nanometer length-scale.
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Affiliation(s)
- Esteban Villarreal
- Department of Chemistry and Biochemistry, University of South Carolina, Columbia, South Carolina 29208, USA.
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29
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Salavatov NA, Dement’eva OV, Mikhailichenko AI, Rudoy VM. Some Aspects of Seedless Synthesis of Gold Nanorods. COLLOID JOURNAL 2018. [DOI: 10.1134/s1061933x18050149] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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30
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Smilgies DM, Li R, Pileni MP. Au nanocrystal superlattices: nanocrystallinity, vicinal surfaces, and growth processes. NANOSCALE 2018; 10:15371-15378. [PMID: 30083696 DOI: 10.1039/c8nr04606a] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Vicinal Au supracrystal surfaces were prepared from Ausingle single domain nanocrystals (NCs), whereas by replacing Ausingle with their polycrystalline counterparts common low-energy supracrystal surfaces were produced. By analogy to atomic crystalline surfaces, we propose a mechanism to explain the formation of such unexpected supracrystal vicinal surfaces, composed of only Ausingle NCs which are non-compact (bct structure) with a coherent alignment of the atomic planes oriented along the [111] superlattice axis and a slight tilt configuration (8.1°) of NCs. In the presence of Co(ε) NCs, these Ausingle supracrystals lose both the slightly tilted configuration of NCs and their orientational order leading to a superlattice transition from bct to fcc. In contrast, supracrystals of Aupoly NCs are insensitive to the presence of Co(ε) NCs. These intriguing structural changes obtained with Ausingle compared to Aupoly supracrystals in the absence and presence of Co(ε) NCs could explain the formation of vicinal surfaces. Note that the solvent used to disperse the nanocrystals plays a key role in the formation of supracrystal vicinal surfaces. Here, a new analogy between supracrystals and atomic crystals is presented.
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Affiliation(s)
- Detlef-M Smilgies
- Cornell High Energy Synchrotron Source (CHESS), Cornell University, Ithaca, New York 14853, USA
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31
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Winckelmans N, Altantzis T, Grzelczak M, Sánchez-Iglesias A, Liz-Marzán LM, Bals S. Multimode Electron Tomography as a Tool to Characterize the Internal Structure and Morphology of Gold Nanoparticles. THE JOURNAL OF PHYSICAL CHEMISTRY. C, NANOMATERIALS AND INTERFACES 2018; 122:13522-13528. [PMID: 29983841 PMCID: PMC6028896 DOI: 10.1021/acs.jpcc.7b12379] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/16/2017] [Revised: 01/16/2018] [Indexed: 06/01/2023]
Abstract
Three dimensional (3D) characterization of structural defects in nanoparticles by transmission electron microscopy is far from straightforward. We propose the use of a dose-efficient approach, so-called multimode tomography, during which tilt series of low and high angle annular dark field scanning transmission electron microscopy projection images are acquired simultaneously. In this manner, not only reliable information can be obtained concerning the shape of the nanoparticles, but also the twin planes can be clearly visualized in 3D. As an example, we demonstrate the application of this approach to identify the position of the seeds with respect to the twinning planes in anisotropic gold nanoparticles synthesized using a seed mediated growth approach.
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Affiliation(s)
- Naomi Winckelmans
- EMAT-University
of Antwerp, Groenenborgerlaan
171, B-2020 Antwerp, Belgium
| | - Thomas Altantzis
- EMAT-University
of Antwerp, Groenenborgerlaan
171, B-2020 Antwerp, Belgium
| | - Marek Grzelczak
- CIC
biomaGUNE and CIBER-BBN, Paseo de Miramón 182, 20014 Donostia-San Sebastián, Spain
- Ikerbasque,
Basque Foundation for Science, 48013 Bilbao, Spain
| | - Ana Sánchez-Iglesias
- CIC
biomaGUNE and CIBER-BBN, Paseo de Miramón 182, 20014 Donostia-San Sebastián, Spain
| | - Luis M. Liz-Marzán
- CIC
biomaGUNE and CIBER-BBN, Paseo de Miramón 182, 20014 Donostia-San Sebastián, Spain
- Ikerbasque,
Basque Foundation for Science, 48013 Bilbao, Spain
| | - Sara Bals
- EMAT-University
of Antwerp, Groenenborgerlaan
171, B-2020 Antwerp, Belgium
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32
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Xin W, De Rosa IM, Cao Y, Yin X, Yu H, Ye P, Carlson L, Yang JM. Ultrasonication-assisted synthesis of high aspect ratio gold nanowires on a graphene template and investigation of their growth mechanism. Chem Commun (Camb) 2018; 54:4124-4127. [PMID: 29623328 DOI: 10.1039/c8cc01727a] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
We report a facile synthesis of Au nanowires (AuNWs) with a high aspect ratio (l/D) of up to 5000 on a plasma activated graphene template with ultrasound assistance. We demonstrate that the ultrasonication induced symmetry breaking of Au clusters facilitates the growth of AuNWs from the embryonic stages. Furthermore, the growth mechanism of AuNWs is systematically investigated using high resolution electron transmission microscopy (HRTEM), which reveals the unique role of the defective graphene template in directing the growth of AuNWs.
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Affiliation(s)
- Wenbo Xin
- Department of Materials Science and Engineering, University of California, Los Angeles, 410 Westwood Plaza, Los Angeles, California 90095, USA. kevin.xwsu.gmail.com
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33
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Tong W, Katz-Boon H, Walsh MJ, Weyland M, Etheridge J, Funston AM. The evolution of size, shape, and surface morphology of gold nanorods. Chem Commun (Camb) 2018; 54:3022-3025. [PMID: 29511759 DOI: 10.1039/c7cc08336j] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
We investigate the transformation of single crystal gold nanorod surface morphology over extended growth times. After initial rapid anisotropic growth and disappearance of {111} bridging facets, the aspect ratios converge across AgNO3 concentrations. The surface morphology transitions from faceted to curved. These observations imply the final aspect ratio has little dependence on the AgNO3 concentration, consistent with primary control of the AgNO3 over aspect ratio occurring at the symmetry breaking point.
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Affiliation(s)
- Wenming Tong
- ARC Centre of Excellence in Exciton Science and School of Chemistry, Monash University, Clayton, Victoria 3800, Australia.
| | - Hadas Katz-Boon
- Department of Materials Science and Engineering, Monash University, Clayton, Victoria 3800, Australia
| | - Michael J Walsh
- Department of Materials Science and Engineering, Monash University, Clayton, Victoria 3800, Australia
| | - Matthew Weyland
- Department of Materials Science and Engineering, Monash University, Clayton, Victoria 3800, Australia and Monash Centre for Electron Microscopy, Monash University, Clayton, Victoria 3800, Australia
| | - Joanne Etheridge
- Department of Materials Science and Engineering, Monash University, Clayton, Victoria 3800, Australia and Monash Centre for Electron Microscopy, Monash University, Clayton, Victoria 3800, Australia
| | - Alison M Funston
- ARC Centre of Excellence in Exciton Science and School of Chemistry, Monash University, Clayton, Victoria 3800, Australia.
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34
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da Silva JA, Meneghetti MR. New Aspects of the Gold Nanorod Formation Mechanism via Seed-Mediated Methods Revealed by Molecular Dynamics Simulations. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2018; 34:366-375. [PMID: 29243933 DOI: 10.1021/acs.langmuir.7b03703] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
New aspects of the formation and growth mechanism of gold nanorods (AuNRs) during seed-mediated colloidal synthesis are revealed from the results of molecular dynamics simulation. The model systems consist of cetyltrimethylammonium bromide (CTAB) units adsorbed on low-index [Au(110), Au(100), and Au(111)] and high-index [Au(250)] gold surfaces. The CTAB units are adsorbed as adjacent cylindrical micelles when the relative number of adsorbed bromide ions is small. At later AuNR growth stages, the number of bromide ions increases as the [AuBr2]- species pass through the channels between the adsorbed micelles on the gold surface. Thus, the mature AuNRs have a high concentration of bromide ions at their surface, which appears to change the organization of the CTAB units on the particle surface from adsorbed micelles to a compact CTAB bilayer.
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Affiliation(s)
- José Adriano da Silva
- Grupo de Catálise e Reatividade Química-GCaR, Instituto de Química e Biotecnologia da Universidade Federal de Alagoas , Av. Lourival de Melo Mota, s/n, Cidade Universitária, CEP, 57072-970 Maceió-AL, Brazil
| | - Mario R Meneghetti
- Grupo de Catálise e Reatividade Química-GCaR, Instituto de Química e Biotecnologia da Universidade Federal de Alagoas , Av. Lourival de Melo Mota, s/n, Cidade Universitária, CEP, 57072-970 Maceió-AL, Brazil
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35
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Walsh MJ, Tong W, Katz-Boon H, Mulvaney P, Etheridge J, Funston AM. A Mechanism for Symmetry Breaking and Shape Control in Single-Crystal Gold Nanorods. Acc Chem Res 2017; 50:2925-2935. [PMID: 29144733 DOI: 10.1021/acs.accounts.7b00313] [Citation(s) in RCA: 46] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
The phenomenon of symmetry breaking-in which the order of symmetry of a system is reduced despite manifest higher-order symmetry in the underlying fundamental laws-is pervasive throughout science and nature, playing a critical role in fields ranging from particle physics and quantum theory to cosmology and general relativity. For the growth of crystals, symmetry breaking is the crucial step required to generate a macroscopic shape that has fewer symmetry elements than the unit cell and/or seed crystal from which it grew. Advances in colloid synthesis have enabled a wide variety of nanocrystal morphologies to be achieved, albeit empirically. Of the various nanoparticle morphologies synthesized, gold nanorods have perhaps been the most intensely studied, thanks largely to their unique morphology-dependent optical properties and exciting application potential. However, despite intense research efforts, an understanding of the mechanism by which a single crystal breaks symmetry and grows anisotropically has remained elusive, with many reports presenting seemingly conflicting data and theories. A fundamental understanding of the symmetry breaking process is needed to provide a rational framework upon which future synthetic approaches can be built. Inspired by recent experimental results and drawing upon the wider literature, we present a mechanism for gold nanorod growth from the moments prior to symmetry breaking to the final product. In particular, we describe the steps by which a cuboctahedral seed particle breaks symmetry and undergoes anisotropic growth to form a nanorod. With an emphasis on the evolving crystal structure, we highlight the key geometrical and chemical drivers behind the symmetry breaking process and factors that govern the formation and growth of nanorods, including control over the crystal width, length, and surface faceting. We propose that symmetry breaking is induced by an initial formation of a new surface structure that is stabilized by the deposition of silver, thus preserving this facet in the embryonic nanorod. These new surfaces initially form stochastically as truncations that remove high-energy edge atoms at the intersection of existing {111} facets and represent the beginnings of a {011}-type surface. Crucially, the finely tuned [HAuCl4]:[AgNO3] ratio and reduction potential of the system mean that silver deposition can occur on the more atomically open surface but not on the pre-existing lower-index facets. The stabilized surfaces develop into side facets of the nascent nanorod, while the largely unpassivated {111} facets are the predominant site of Au atom deposition. Growth in the width direction is tightly controlled by a self-sustaining cycle of galvanic replacement and silver deposition. It is the [HAuCl4]:[AgNO3] ratio that directly determines the particle size at which the more open atomic surfaces can be stabilized by silver and the rate of growth in the width direction following symmetry breaking, thus explaining the known aspect ratio control with Ag ion concentration. We describe the evolving surface faceting of the nanorod and the emergence of higher-index facets. Collectively, these observations allow us to identify facet-size and edge-atom effects as a simple fundamental driver of symmetry breaking and the subsequent development of new surfaces in the presence of adsorbates.
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Affiliation(s)
| | | | | | - Paul Mulvaney
- ARC
Centre of Excellence in Exciton Science, School of Chemistry, and
Bio21 Institute, University of Melbourne, Parkville, Victoria 3010, Australia
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36
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Atomistic simulation of the measurement of mechanical properties of gold nanorods by AFM. Sci Rep 2017; 7:16257. [PMID: 29176635 PMCID: PMC5701227 DOI: 10.1038/s41598-017-16460-9] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2017] [Accepted: 11/13/2017] [Indexed: 11/18/2022] Open
Abstract
Mechanical properties of nanoscale objects can be measured with an atomic force microscope (AFM) tip. However, the continuum models typically used to relate the force measured at a certain indentation depth to quantities such as the elastic modulus, may not be valid at such small scales, where the details of atomistic processes need to be taken into account. On the other hand, molecular dynamics (MD) simulations of nanoindentation, which can offer understanding at an atomistic level, are often performed on systems much smaller than the ones studied experimentally. Here, we present large scale MD simulations of the nanoindentation of single crystal and penta-twinned gold nanorod samples on a silicon substrate, with a spherical diamond AFM tip apex. Both the sample and tip sizes and geometries match commercially available products, potentially linking simulation and experiment. Different deformation mechanisms, involving the creation, migration and annihilation of dislocations are observed depending on the nanorod crystallographic structure and orientation. Using the Oliver-Pharr method, the Young’s moduli of the (100) terminated and (110) terminated single crystal nanorods, and the penta-twinned nanorod, have been determined to be 103 ± 2, 140 ± 4 and 108 ± 2 GPa, respectively, which is in good agreement with bending experiments performed on nanowires.
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37
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Requejo KI, Liopo AV, Derry PJ, Zubarev ER. Accelerating Gold Nanorod Synthesis with Nanomolar Concentrations of Poly(vinylpyrrolidone). LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2017; 33:12681-12688. [PMID: 29032680 DOI: 10.1021/acs.langmuir.7b02942] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
A novel modification for the seedless synthesis of gold nanorods (AuNRs) has been developed. Nanomolar concentrations of 10 kDa poly(vinylpyrrolidone) (PVP) can be introduced to a growth solution containing 25, 50, or 100 mM cetyltrimethylammonium bromide (CTAB) to significantly reduce the dimensions of AuNRs. We found that PVP accelerates the growth rate of AuNRs by more than two times that of nanorods grown in 50 and 100 mM CTAB solutions. Additionally, there is a time-dependent effect of adding PVP to the nanorod growth solution that can be utilized to tune their aspect ratio. Because the concentration of PVP is far below the concentration of HAuCl4 in the reaction mixture, PVP primarily functions not as a reducing agent, but as a capping or templating ligand to stabilize the growing nanorods. Our reproducible protocol enables the synthesis of AuNRs in high yield with tunable sizes: 45 × 6.7, 28 × 5.5, and 12 × 4.5 nm for 100, 50, and 25 mM CTAB, respectively. We estimated the number of PVP chains per nanorod in growth solutions to be around 30, which suggests that the effect on the aspect ratio is caused by a direct interaction between the AuNR surface and the PVP.
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Affiliation(s)
| | - Anton V Liopo
- Department of Chemistry, Rice University , Houston, Texas 77005, United States
| | - Paul J Derry
- Department of Chemistry, Rice University , Houston, Texas 77005, United States
| | - Eugene R Zubarev
- Department of Chemistry, Rice University , Houston, Texas 77005, United States
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38
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Park K, Hsiao MS, Yi YJ, Izor S, Koerner H, Jawaid A, Vaia RA. Highly Concentrated Seed-Mediated Synthesis of Monodispersed Gold Nanorods. ACS APPLIED MATERIALS & INTERFACES 2017; 9:26363-26371. [PMID: 28714667 DOI: 10.1021/acsami.7b08003] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
The extremely large optical extinction coefficient of gold nanorods (Au-NRs) enables their use in a diverse array of technologies, rnging from plasmonic imaging, therapeutics and sensors, to large area coatings, filters, and optical attenuators. Development of the latter technologies has been hindered by the lack of cost-effective, large volume production. This is due in part to the low reactant concentration required for symmetry breaking in conventional seed-mediated synthesis. Direct scale up of laboratory procedures has limited viability because of excessive solvent volume, exhaustive postsynthesis purification processes, and the generation of large amounts of waste (e.g., hexadecyltrimethylammonium bromide(CTAB)). Following recent insights into the growth mechanism of Au-NRs and the role of seed development, we modify the classic seed-mediated synthesis via temporal control of seed and reactant concentration to demonstrate production of Au-NRs at more than 100-times the conventional concentration, while maintaining independent control and narrow distribution of nanoparticle dimensions, aspect ratio, and volume. Thus, gram scale synthesis of Au-NRs with prescribed aspect ratio and volume is feasible in a 100 mL reactor with 1/100th of organic waste relative to conventional approaches. Such scale-up techniques are crucial to cost-effectively meet the increased demand for large quantities of Au-NRs in emerging applications.
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Affiliation(s)
- Kyoungweon Park
- Materials and Manufacturing Directorate, Air Force Research Laboratory , Wright-Patterson AFB, Ohio 45433-7702, United States
- UES, Inc. , Dayton, Ohio 45432, United States
| | - Ming-Siao Hsiao
- Materials and Manufacturing Directorate, Air Force Research Laboratory , Wright-Patterson AFB, Ohio 45433-7702, United States
- UES, Inc. , Dayton, Ohio 45432, United States
| | - Yoon-Jae Yi
- Materials and Manufacturing Directorate, Air Force Research Laboratory , Wright-Patterson AFB, Ohio 45433-7702, United States
- UES, Inc. , Dayton, Ohio 45432, United States
| | - Sarah Izor
- Materials and Manufacturing Directorate, Air Force Research Laboratory , Wright-Patterson AFB, Ohio 45433-7702, United States
- UES, Inc. , Dayton, Ohio 45432, United States
| | - Hilmar Koerner
- Materials and Manufacturing Directorate, Air Force Research Laboratory , Wright-Patterson AFB, Ohio 45433-7702, United States
| | - Ali Jawaid
- Materials and Manufacturing Directorate, Air Force Research Laboratory , Wright-Patterson AFB, Ohio 45433-7702, United States
- UES, Inc. , Dayton, Ohio 45432, United States
| | - Richard A Vaia
- Materials and Manufacturing Directorate, Air Force Research Laboratory , Wright-Patterson AFB, Ohio 45433-7702, United States
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39
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Affiliation(s)
- Luis M. Liz-Marzán
- CIC biomaGUNE, Paseo de Miramón 182, 20014 Donostia–San Sebastián, Spain
- IKERBASQUE, Basque Foundation for Science, 48013 Bilbao, Spain
| | - Marek Grzelczak
- CIC biomaGUNE, Paseo de Miramón 182, 20014 Donostia–San Sebastián, Spain
- IKERBASQUE, Basque Foundation for Science, 48013 Bilbao, Spain
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40
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Liu K, Bu Y, Zheng Y, Jiang X, Yu A, Wang H. Seedless Synthesis of Monodispersed Gold Nanorods with Remarkably High Yield: Synergistic Effect of Template Modification and Growth Kinetics Regulation. Chemistry 2017; 23:3291-3299. [PMID: 28074502 DOI: 10.1002/chem.201605617] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2016] [Indexed: 11/07/2022]
Abstract
Gold nanorods (AuNRs) are versatile materials due to their broadly tunable optical properties associated with their anisotropic feature. Conventional seed-mediated synthesis is, however, not only limited by the operational complexity and over-sensitivity towards subtle changes of experimental conditions but also suffers from low yield (≈15 %). A facile seedless method is reported to overcome these challenges. Monodispersed AuNRs with high yield (≈100 %) and highly adjustable longitudinal surface plasmon resonance (LSPR) are reproducibly synthesized. The parameters that influence the AuNRs growth were thoroughly investigated in terms of growth kinetics and soft-template regulation, offering a better understanding of the template-based mechanism. The facile synthesis, broad tunability of LSRP, high reproducibility, high yield, and ease of scale-up make this method promising for the future mass production of monodispersed AuNRs for applications in catalysis, sensing, and biomedicine.
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Affiliation(s)
- Kang Liu
- Department of Chemical Engineering, Monash University, Clayton, Victoria, 3800, Australia
| | - Yanru Bu
- Department of Chemical Engineering, Monash University, Clayton, Victoria, 3800, Australia
| | - Yuanhui Zheng
- School of Chemistry, University of New South Wales, Sydney, NSW, 2052, Australia
| | - Xuchuan Jiang
- Department of Chemical Engineering, Monash University, Clayton, Victoria, 3800, Australia
| | - Aibing Yu
- Department of Chemical Engineering, Monash University, Clayton, Victoria, 3800, Australia
| | - Huanting Wang
- Department of Chemical Engineering, Monash University, Clayton, Victoria, 3800, Australia
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41
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Gilroy KD, Peng HC, Yang X, Ruditskiy A, Xia Y. Symmetry breaking during nanocrystal growth. Chem Commun (Camb) 2017; 53:4530-4541. [DOI: 10.1039/c7cc01121k] [Citation(s) in RCA: 71] [Impact Index Per Article: 10.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
This article highlights the mechanisms that guide the growth of nanocrystals to asymmetric shapes based on rationally designed wet-chemical syntheses.
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Affiliation(s)
- Kyle D. Gilroy
- The Wallace H. Coulter Department of Biomedical Engineering
- Georgia Institute of Technology and Emory University
- Atlanta
- USA
| | - Hsin-Chieh Peng
- School of Chemistry and Biochemistry
- Georgia Institute of Technology
- Atlanta
- USA
| | - Xuan Yang
- The Wallace H. Coulter Department of Biomedical Engineering
- Georgia Institute of Technology and Emory University
- Atlanta
- USA
| | - Aleksey Ruditskiy
- School of Chemistry and Biochemistry
- Georgia Institute of Technology
- Atlanta
- USA
| | - Younan Xia
- The Wallace H. Coulter Department of Biomedical Engineering
- Georgia Institute of Technology and Emory University
- Atlanta
- USA
- School of Chemistry and Biochemistry
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42
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Alfranca G, Artiga Á, Stepien G, Moros M, Mitchell SG, de la Fuente JM. Gold nanoprism-nanorod face off: comparing the heating efficiency, cellular internalization and thermoablation capacity. Nanomedicine (Lond) 2016; 11:2903-2916. [PMID: 27785974 DOI: 10.2217/nnm-2016-0257] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
AIM This work compares the synthesis, heating capability, cellular internalization and thermoablation capacity of two different types of anisotropic gold nanoparticles: gold nanorods (NRs) and nanoprisms (NPrs). METHODS Both particles possess surface plasmon resonance absorption bands in the near-IR, and their heating efficiency upon irradiation with a continuous near-IR laser (1064 nm) was evaluated. The cellular internalization, location and toxicity of these PEG-stabilized NPrs and NRs were then assessed in the Vero cell line by transmission electron microscopy and inductively coupled plasma mass spectrometry analysis, and their ability to induce cell death upon laser irradiation was then evaluated and compared. RESULTS & CONCLUSION Although both nanoparticles are highly efficient photothermal converters, NRs possessed a more efficient heating capability, yet the in vitro thermoablation studies clearly demonstrated that NPrs were more effective at inducing cell death through photothermal ablation due to their greater cellular internalization.
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Affiliation(s)
- Gabriel Alfranca
- Institute of Nano Biomedicine and Engineering, Key Laboratory for Thin Film & Microfabrication Technology of the Ministry of Education, Shanghai Jiao Tong University, 200240-Shanghai, PR China.,Instituto de Ciencia de Materiales de Aragón (ICMA-CSIC), Universidad de Zaragoza, 50009-Zaragoza, Spain
| | - Álvaro Artiga
- Instituto de Ciencia de Materiales de Aragón (ICMA-CSIC), Universidad de Zaragoza, 50009-Zaragoza, Spain
| | - Grazyna Stepien
- Instituto de Nanociencia de Aragón, Universidad de Zaragoza, 50018-Zaragoza, Spain
| | - María Moros
- Istituto di Scienze Applicate e Sistemi Intelligenti 'Eduardo Caianiello,' 80078-Naples, Italy
| | - Scott G Mitchell
- Instituto de Ciencia de Materiales de Aragón (ICMA-CSIC), Universidad de Zaragoza, 50009-Zaragoza, Spain
| | - Jesús M de la Fuente
- Institute of Nano Biomedicine and Engineering, Key Laboratory for Thin Film & Microfabrication Technology of the Ministry of Education, Shanghai Jiao Tong University, 200240-Shanghai, PR China.,Instituto de Ciencia de Materiales de Aragón (ICMA-CSIC), Universidad de Zaragoza, 50009-Zaragoza, Spain
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43
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Meena SK, Sulpizi M. From Gold Nanoseeds to Nanorods: The Microscopic Origin of the Anisotropic Growth. Angew Chem Int Ed Engl 2016; 55:11960-4. [DOI: 10.1002/anie.201604594] [Citation(s) in RCA: 44] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2016] [Revised: 07/21/2016] [Indexed: 11/06/2022]
Affiliation(s)
- Santosh Kumar Meena
- Institute of Physics; Johannes Gutenberg University Mainz; Staudingerweg 7 55099 Mainz Germany
| | - Marialore Sulpizi
- Institute of Physics; Johannes Gutenberg University Mainz; Staudingerweg 7 55099 Mainz Germany
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44
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Meena SK, Sulpizi M. From Gold Nanoseeds to Nanorods: The Microscopic Origin of the Anisotropic Growth. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201604594] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Santosh Kumar Meena
- Institute of Physics; Johannes Gutenberg University Mainz; Staudingerweg 7 55099 Mainz Germany
| | - Marialore Sulpizi
- Institute of Physics; Johannes Gutenberg University Mainz; Staudingerweg 7 55099 Mainz Germany
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45
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Zhao Z, Zheng Z, Roux C, Delmas C, Marty JD, Kahn ML, Mingotaud C. Importance of the Correlation between Width and Length in the Shape Analysis of Nanorods: Use of a 2D Size Plot To Probe Such a Correlation. Chemistry 2016; 22:12424-9. [PMID: 27460632 DOI: 10.1002/chem.201601837] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2016] [Indexed: 01/15/2023]
Abstract
Analysis of nanoparticle size through a simple 2D plot is proposed in order to extract the correlation between length and width in a collection or a mixture of anisotropic particles. Compared to the usual statistics on the length associated with a second and independent statistical analysis of the width, this simple plot easily points out the various types of nanoparticles and their (an)isotropy. For each class of nano-objects, the relationship between width and length (i.e., the strong or weak correlations between these two parameters) may suggest information concerning the nucleation/growth processes. It allows one to follow the effect on the shape and size distribution of physical or chemical processes such as simple ripening. Various electron microscopy pictures from the literature or from the authors' own syntheses are used as examples to demonstrate the efficiency and simplicity of the proposed 2D plot combined with a multivariate analysis.
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Affiliation(s)
- Zhihua Zhao
- Laboratoire des IMRCP, Université de Toulouse, CNRS UMR 5623, Université Paul Sabatier, 118, route de Narbonne, 31062, Toulouse Cedex 9, France.,Laboratory of Coordination Chemistry, CNRS UPR 8241, University of Toulouse, 205, route de Narbonne, 31077, Toulouse, France
| | - Zhiqin Zheng
- Laboratoire des IMRCP, Université de Toulouse, CNRS UMR 5623, Université Paul Sabatier, 118, route de Narbonne, 31062, Toulouse Cedex 9, France.,Laboratory of Coordination Chemistry, CNRS UPR 8241, University of Toulouse, 205, route de Narbonne, 31077, Toulouse, France
| | - Clément Roux
- Laboratoire des IMRCP, Université de Toulouse, CNRS UMR 5623, Université Paul Sabatier, 118, route de Narbonne, 31062, Toulouse Cedex 9, France
| | - Céline Delmas
- MIAT, Université de Toulouse, INRA, 31326, Castanet-Tolosan, France
| | - Jean-Daniel Marty
- Laboratoire des IMRCP, Université de Toulouse, CNRS UMR 5623, Université Paul Sabatier, 118, route de Narbonne, 31062, Toulouse Cedex 9, France
| | - Myrtil L Kahn
- Laboratory of Coordination Chemistry, CNRS UPR 8241, University of Toulouse, 205, route de Narbonne, 31077, Toulouse, France.
| | - Christophe Mingotaud
- Laboratoire des IMRCP, Université de Toulouse, CNRS UMR 5623, Université Paul Sabatier, 118, route de Narbonne, 31062, Toulouse Cedex 9, France.
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46
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Picciolini S, Mehn D, Ojea-Jiménez I, Gramatica F, Morasso C. Hydroquinone Based Synthesis of Gold Nanorods. J Vis Exp 2016. [PMID: 27585238 DOI: 10.3791/54319] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022] Open
Abstract
Gold nanorods are an important kind of nanoparticles characterized by peculiar plasmonic properties. Despite their widespread use in nanotechnology, the synthetic methods for the preparation of gold nanorods are still not fully optimized. In this paper we describe a new, highly efficient, two-step protocol based on the use of hydroquinone as a mild reducing agent. Our approach allows the preparation of nanorods with a good control of size and aspect ratio (AR) simply by varying the amount of hexadecyl trimethylammonium bromide (CTAB) and silver ions (Ag(+)) present in the "growth solution". By using this method, it is possible to markedly reduce the amount of CTAB, an expensive and cytotoxic reagent, necessary to obtain the elongated shape. Gold nanorods with an aspect ratio of about 3 can be obtained in the presence of just 50 mM of CTAB (versus 100 mM used in the standard protocol based on the use of ascorbic acid), while shorter gold nanorods are obtained using a concentration as low as 10 mM.
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Affiliation(s)
- Silvia Picciolini
- Labion - Laboratory of Nanomedicine and Clinical Biophotonics, Fondazione Don Carlo Gnocchi ONLUS (Don Carlo Gnocchi Foundation)
| | - Dora Mehn
- Institute for Health and Consumer Protection (IHCP), European Commission Joint Research Centre
| | - Isaac Ojea-Jiménez
- Institute for Health and Consumer Protection (IHCP), European Commission Joint Research Centre
| | - Furio Gramatica
- Labion - Laboratory of Nanomedicine and Clinical Biophotonics, Fondazione Don Carlo Gnocchi ONLUS (Don Carlo Gnocchi Foundation)
| | - Carlo Morasso
- Labion - Laboratory of Nanomedicine and Clinical Biophotonics, Fondazione Don Carlo Gnocchi ONLUS (Don Carlo Gnocchi Foundation);
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47
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Kim BM, Seo SH, Joe A, Shim KD, Jang ES. Growth Mechanism of Gold Nanorods in Binary Surfactant System. B KOREAN CHEM SOC 2016. [DOI: 10.1002/bkcs.10805] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Bo-Mi Kim
- Department of Applied Chemistry; Kumoh National Institute of Technology; Gyeongbuk 730-701 Republic of Korea
| | - Sun-Hwa Seo
- Department of Applied Chemistry; Kumoh National Institute of Technology; Gyeongbuk 730-701 Republic of Korea
| | - Ara Joe
- Department of Applied Chemistry; Kumoh National Institute of Technology; Gyeongbuk 730-701 Republic of Korea
| | - Kyu-Dong Shim
- Department of Applied Chemistry; Kumoh National Institute of Technology; Gyeongbuk 730-701 Republic of Korea
| | - Eue-Soon Jang
- Department of Applied Chemistry; Kumoh National Institute of Technology; Gyeongbuk 730-701 Republic of Korea
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48
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Zhang Q, Han L, Jing H, Blom DA, Lin Y, Xin HL, Wang H. Facet Control of Gold Nanorods. ACS NANO 2016; 10:2960-2974. [PMID: 26795706 DOI: 10.1021/acsnano.6b00258] [Citation(s) in RCA: 67] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
While great success has been achieved in fine-tuning the aspect ratios and thereby the plasmon resonances of cylindrical Au nanorods, facet control with atomic level precision on the highly curved nanorod surfaces has long been a significantly more challenging task. The intrinsic structural complexity and lack of precise facet control of the nanorod surfaces remain the major obstacles for the atomic-level elucidation of the structure-property relationships that underpin the intriguing catalytic performance of Au nanorods. Here we demonstrate that the facets of single-crystalline Au nanorods can be precisely tailored using cuprous ions and cetyltrimethylammonium bromide as a unique pair of surface capping competitors to guide the particle geometry evolution during nanorod overgrowth. By deliberately maneuvering the competition between cuprous ions and cetyltrimethylammonium bromide, we have been able to create, in a highly controllable and selective manner, an entire family of nanorod-derived anisotropic multifaceted geometries whose surfaces are enclosed by specific types of well-defined high-index and low-index facets. This facet-controlled nanorod overgrowth approach also allows us to fine-tune the particle aspect ratios while well-preserving all the characteristic facets and geometric features of the faceted Au nanorods. Taking full advantage of the combined structural and plasmonic tunability, we have further studied the facet-dependent heterogeneous catalysis on well-faceted Au nanorods using surface-enhanced Raman spectroscopy as an ultrasensitive spectroscopic tool with unique time-resolving and molecular finger-printing capabilities.
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Affiliation(s)
- Qingfeng Zhang
- Department of Chemistry and Biochemistry, University of South Carolina , Columbia, South Carolina 29208, United States
| | - Lili Han
- Center for Functional Nanomaterials, Brookhaven National Laboratory , Upton, New York 11973, United States
| | - Hao Jing
- Department of Chemistry and Biochemistry, University of South Carolina , Columbia, South Carolina 29208, United States
| | - Douglas A Blom
- NanoCenter, University of South Carolina , Columbia, South Carolina 29208, United States
| | - Ye Lin
- Department of Chemical Engineering, University of South Carolina , Columbia, South Carolina 29208, United States
| | - Huolin L Xin
- Center for Functional Nanomaterials, Brookhaven National Laboratory , Upton, New York 11973, United States
| | - Hui Wang
- Department of Chemistry and Biochemistry, University of South Carolina , Columbia, South Carolina 29208, United States
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49
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Ali S, Myasnichenko VS, Neyts EC. Size-dependent strain and surface energies of gold nanoclusters. Phys Chem Chem Phys 2016; 18:792-800. [DOI: 10.1039/c5cp06153a] [Citation(s) in RCA: 56] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Calculation of size-dependent strain and surface energies of gold nanoparticles.
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Affiliation(s)
- S. Ali
- Research Group PLASMANT
- Department of Chemistry
- University of Antwerp
- 2610 Wilrijk-Antwerp
- Belgium
| | | | - E. C. Neyts
- Research Group PLASMANT
- Department of Chemistry
- University of Antwerp
- 2610 Wilrijk-Antwerp
- Belgium
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50
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Chen D, Song Z, Chen F, Huang J, Wei J, Zhao Y. Simply controllable growth of single crystal plasmonic Au–Ag nano-spines with anisotropic multiple sites for highly sensitive and uniform surface-enhanced Raman scattering sensing. RSC Adv 2016. [DOI: 10.1039/c6ra13420c] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
Abstract
Simply synthesizing Au core@Au–Ag alloy spine nanostructures with a highly tunable LSPR band and dense “hot spots” for SERS sensing.
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Affiliation(s)
- Dongzhen Chen
- State Key Laboratory for Mechanical Behavior of Materials
- School of Materials Science and Engineering
- Xi'an Jiaotong University
- Xi'an
- P. R. China
| | - Zhongxiao Song
- State Key Laboratory for Mechanical Behavior of Materials
- School of Materials Science and Engineering
- Xi'an Jiaotong University
- Xi'an
- P. R. China
| | - Feng Chen
- Key Laboratory of Biomedical Information Engineering of Education Ministry
- School of Life Science and Technology
- Xi'an Jiaotong University
- Xi'an
- P. R. China
| | - Jian Huang
- Key Laboratory of Biomedical Information Engineering of Education Ministry
- School of Life Science and Technology
- Xi'an Jiaotong University
- Xi'an
- P. R. China
| | - Jing Wei
- Department of Chemical Engineering
- Monash University
- Clayton
- Australia
| | - Yongxi Zhao
- Key Laboratory of Biomedical Information Engineering of Education Ministry
- School of Life Science and Technology
- Xi'an Jiaotong University
- Xi'an
- P. R. China
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