1
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Troncoso-Afonso L, Vinnacombe-Willson GA, García-Astrain C, Liz-Márzan LM. SERS in 3D cell models: a powerful tool in cancer research. Chem Soc Rev 2024; 53:5118-5148. [PMID: 38607302 PMCID: PMC11104264 DOI: 10.1039/d3cs01049j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2023] [Indexed: 04/13/2024]
Abstract
Unraveling the cellular and molecular mechanisms underlying tumoral processes is fundamental for the diagnosis and treatment of cancer. In this regard, three-dimensional (3D) cancer cell models more realistically mimic tumors compared to conventional 2D cell cultures and are more attractive for performing such studies. Nonetheless, the analysis of such architectures is challenging because most available techniques are destructive, resulting in the loss of biochemical information. On the contrary, surface-enhanced Raman spectroscopy (SERS) is a non-invasive analytical tool that can record the structural fingerprint of molecules present in complex biological environments. The implementation of SERS in 3D cancer models can be leveraged to track therapeutics, the production of cancer-related metabolites, different signaling and communication pathways, and to image the different cellular components and structural features. In this review, we highlight recent progress in the use of SERS for the evaluation of cancer diagnosis and therapy in 3D tumoral models. We outline strategies for the delivery and design of SERS tags and shed light on the possibilities this technique offers for studying different cellular processes, through either biosensing or bioimaging modalities. Finally, we address current challenges and future directions, such as overcoming the limitations of SERS and the need for the development of user-friendly and robust data analysis methods. Continued development of SERS 3D bioimaging and biosensing systems, techniques, and analytical strategies, can provide significant contributions for early disease detection, novel cancer therapies, and the realization of patient-tailored medicine.
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Affiliation(s)
- Lara Troncoso-Afonso
- BioNanoPlasmonics Laboratory, CIC biomaGUNE, Basque Research and Technology Alliance (BRTA), 20014 Donostia-San Sebastián, Spain.
- Department of Applied Chemistry, University of the Basque Country, 20018 Donostia-San Sebastián, Gipuzkoa, Spain
| | - Gail A Vinnacombe-Willson
- BioNanoPlasmonics Laboratory, CIC biomaGUNE, Basque Research and Technology Alliance (BRTA), 20014 Donostia-San Sebastián, Spain.
| | - Clara García-Astrain
- BioNanoPlasmonics Laboratory, CIC biomaGUNE, Basque Research and Technology Alliance (BRTA), 20014 Donostia-San Sebastián, Spain.
- Centro de Investigación Biomédica en Red de Bioingeniería Biomateriales, y Nanomedicina (CIBER-BBN), Paseo de Miramón 182, 20014 Donostia-San Sebastián, Spain
| | - Luis M Liz-Márzan
- BioNanoPlasmonics Laboratory, CIC biomaGUNE, Basque Research and Technology Alliance (BRTA), 20014 Donostia-San Sebastián, Spain.
- Centro de Investigación Biomédica en Red de Bioingeniería Biomateriales, y Nanomedicina (CIBER-BBN), Paseo de Miramón 182, 20014 Donostia-San Sebastián, Spain
- Ikerbasque Basque Foundation for Science, 48013 Bilbao, Spain
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2
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Liu Z, Lanier OL, Chauhan A. Poly (Vinyl Alcohol) Assisted Synthesis and Anti-Solvent Precipitation of Gold Nanoparticles. NANOMATERIALS 2020; 10:nano10122359. [PMID: 33260990 PMCID: PMC7760612 DOI: 10.3390/nano10122359] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/07/2020] [Revised: 11/16/2020] [Accepted: 11/23/2020] [Indexed: 11/16/2022]
Abstract
Gold nanoparticles (GNPs) are commonly synthesized using the Turkevich method, but there are limitations on the maximum concentration of gold nanoparticles that can be achieved using this method (often < 1 mM (=0.34 mg/mL) gold precursor loading). Here, we report an inverse Turkevich method which significantly increases the concentration of gold nanoparticles (up to 5-fold) in the aqueous phase by introducing poly (vinyl alcohol) (PVA) to the synthesis system for stabilization. The aim of this study is to understand the effect of PVA and other synthesis parameters, such as trisodium citrate and tetrachloroauric acid concentration, with the goal of maximizing concentration while maintaining gold nanoparticle morphology, stability, and narrow size distribution. The size distribution of GNPs is investigated for a range of parameters by dynamic light scattering and electron microscopy, and ultraviolet-visible (UV–vis) spectroscopy is also utilized to explore the localized surface plasmon resonance (LSPR). Further, the interaction between GNPs and PVA is investigated by Fourier-transform infrared spectroscopy. In addition to increasing the gold loading by varying synthesis parameters, we also develop a novel anti-solvent precipitation method for the PVA-coated GNPs, which enables continuous condensation and purification of GNPs by forming a gold/PVA nanocomposite.
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3
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Karthäuser S, Peter S, Simon U. Integration of Individual Functionalized Gold Nanoparticles into Nanoelectrode Configurations: Recent Advances. Eur J Inorg Chem 2020. [DOI: 10.1002/ejic.202000629] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Silvia Karthäuser
- Peter Grünberg Institut (PGI‐7) and JARA‐FIT Forschungszentrum Jülich GmbH 52425 Jülich Germany
| | - Sophia Peter
- Institute of Inorganic Chemistry and JARA‐FIT RWTH Aachen University 52074 Aachen Germany
| | - Ulrich Simon
- Institute of Inorganic Chemistry and JARA‐FIT RWTH Aachen University 52074 Aachen Germany
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4
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Marcovici A, Le Saux G, Bhingardive V, Rukenstein P, Flomin K, Shreteh K, Golan R, Mokari T, Schvartzman M. Directed Assembly of Au-Tipped 1D Inorganic Nanostructures via Nanolithographic Docking. ACS NANO 2018; 12:10016-10023. [PMID: 30252443 DOI: 10.1021/acsnano.8b04443] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/10/2023]
Abstract
Controlled assembly of nanostructures is a key challenge in nanotechnology. In this work, we introduce an approach for the controlled assembly of 1D nanodumbbells-Au-tipped semiconductor nanorods-into arbitrary 2D higher architectures, by their chemical docking to nanopatterned functionalities. We realized the docking functionalities via nanoimprinted metallic nanodots functionalized with an organic monolayer, whose terminal thiol groups chemically bind the nanodumbbell tips. We demonstrated that the functional nanopattern encodes the nanodumbbell assembly and can be designed to deterministically position nanodumbbells in two possible modes. In the single-docking mode, the nanodot arrays are designed with a spacing that exceeds the nanodumbbell length, restricting each nanodumbbell to dock with one edge and physically connect with its free edge to one of the neighboring nanodumbbells. Alternatively, in the double-docking mode, the nanodots are spaced to exactly fit the nanodumbbell length, allowing nanodumbbell docking with both edges. We found that the docking kinetics can be described by a random attachment model, and verified that for the used docking chemistry, nanodumbbells that are docked to the same dot do not interact with each other. Our work demonstrates the possibility for massively parallel positioning of sub-100 nm 1D semiconductor nanostructures, and can potentially enable their future integration into functional nanodevices and nanosystems.
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5
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Simitzi C, Harimech P, Spanou S, Lanara C, Heuer-Jungemann A, Manousaki A, Fotakis C, Ranella A, Kanaras AG, Stratakis E. Cells on hierarchically-structured platforms hosting functionalized nanoparticles. Biomater Sci 2018; 6:1469-1479. [PMID: 29623309 DOI: 10.1039/c7bm00904f] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
In this work, we report on a novel approach to develop hierarchically-structured cell culture platforms incorporating functionalized gold nanoparticles (AuNPs). In particular, the hierarchical substrates comprise primary pseudo-periodic arrays of silicon microcones combined with a secondary nanoscale pattern of homogeneously deposited AuNPs terminated with bio-functional moieties. AuNPs with various functionalities (i.e. oligopeptides, small molecules and oligomers) were successfully attached onto the microstructures. Experiments with PC12 cells on hierarchical substrates incorporating AuNPs carrying the RGD peptide showed an impressive growth and NGF-induced differentiation of the PC12 cells, compared to that on the NP-free, bare, micropatterned substrates. The exploitation of the developed methodology for the binding of AuNPs as carriers of specific bio-functional moieties onto micropatterned culture substrates for cell biology studies is envisaged.
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Affiliation(s)
- Chara Simitzi
- Foundation for Research and Technology-Hellas (F.O.R.T.H.), Institute of Electronic Structure and Laser (I.E.S.L.), Heraklion, Greece.
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6
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Kinnear C, Cadusch J, Zhang H, Lu J, James TD, Roberts A, Mulvaney P. Directed Chemical Assembly of Single and Clustered Nanoparticles with Silanized Templates. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2018; 34:7355-7363. [PMID: 29806979 DOI: 10.1021/acs.langmuir.8b00775] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
The assembly of nanoscale materials into arbitrary, organized structures remains a major challenge in nanotechnology. Herein, we report a general method for creating 2D structures by combining top-down lithography with bottom-up chemical assembly. Under optimal conditions, the assembly of gold nanoparticles was achieved in less than 30 min. Single gold nanoparticles, from 10 to 100 nm, can be placed in predetermined patterns with high fidelity, and higher-order structures can be generated consisting of dimers or trimers. It is shown that the nanoparticle arrays can be transferred to, and embedded within, polymer films. This provides a new method for the large-scale fabrication of nanoparticle arrays onto diverse substrates using wet chemistry.
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Affiliation(s)
| | | | | | | | - Timothy D James
- Reserve Bank of Australia , Craigieburn , Victoria 3064 , Australia
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7
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Nguyen VH, Kaulen C, Simon U, Schnakenberg U. Single Interdigital Transducer Approach for Gravimetrical SAW Sensor Applications in Liquid Environments. SENSORS 2017; 17:s17122931. [PMID: 29258213 PMCID: PMC5751692 DOI: 10.3390/s17122931] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/31/2017] [Revised: 12/09/2017] [Accepted: 12/12/2017] [Indexed: 12/05/2022]
Abstract
Surface acoustic wave (SAW) devices are well known for mass-sensitive sensor applications. In biosensing applications, chemical and biochemically evoked binding processes on surfaces are detected in liquid environments using delay line or resonator sensor configurations, preferably in combination with the appropriate microfluidic devices. All configurations share the common feature of analyzing the transmission characteristic of the propagating SAW. In this paper, a novel SAW-based impedance sensor type is introduced which uses only one interdigital transducer (IDT), simultaneously as the SAW generator and the sensor element. Here, the input port reflection coefficient S11 is measured at the IDT instead of the commonly used S21 transmission forward gain parameter. Thus, a sharp and distinct peak of the S11 spectrum is obtained, enabling a comfortable direct readout of the sensor signal. Proof of the concept was gained by analyzing the specific binding of the 4-mercaptophenylacetic acid gold nanoparticles (MPA–AuNP) directly to the IDT surface. The corresponding binding kinetic of the MPA–AuNP on the functionalized gold surface has been analyzed and a sensitivity of 7.4 mΩ nM−1 has been determined.
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Affiliation(s)
- Vu Hoa Nguyen
- Institute of Materials in Electrical Engineering 1, RWTH Aachen University, 52074 Aachen, Germany.
| | - Corinna Kaulen
- Institute of Inorganic Chemistry and JARA-Fundamentals of Future Information Technologies, RWTH Aachen University, 52074 Aachen, Germany.
| | - Ulrich Simon
- Institute of Inorganic Chemistry and JARA-Fundamentals of Future Information Technologies, RWTH Aachen University, 52074 Aachen, Germany.
| | - Uwe Schnakenberg
- Institute of Materials in Electrical Engineering 1, RWTH Aachen University, 52074 Aachen, Germany.
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8
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Tran AQ, Kaulen C, Simon U, Offenhäusser A, Mayer D. Surface coupling strength of gold nanoparticles affects cytotoxicity towards neurons. Biomater Sci 2017; 5:1051-1060. [DOI: 10.1039/c7bm00054e] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Weakly bound gold nanoparticles reveal awful toxicity towards neurons.
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Affiliation(s)
- A. Q. Tran
- JARA-FIT
- Aachen
- Germany
- Peter Grünberg (PGI8)
- Forschungszentrum Jülich GmbH
| | - C. Kaulen
- JARA-FIT
- Aachen
- Germany
- Institute of Inorganic Chemistry
- RWTH Aachen University
| | - U. Simon
- JARA-FIT
- Aachen
- Germany
- Institute of Inorganic Chemistry
- RWTH Aachen University
| | - A. Offenhäusser
- JARA-FIT
- Aachen
- Germany
- Peter Grünberg (PGI8)
- Forschungszentrum Jülich GmbH
| | - D. Mayer
- JARA-FIT
- Aachen
- Germany
- Peter Grünberg (PGI8)
- Forschungszentrum Jülich GmbH
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9
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Witt J, Mandler D, Wittstock G. Nanoparticle-Imprinted Matrices as Sensing Layers for Size-Selective Recognition of Silver Nanoparticles. ChemElectroChem 2016. [DOI: 10.1002/celc.201600321] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Julia Witt
- Faculty for Mathematics and Natural Sciences; Center of Interface Science, Institute of Chemistry; Carl von Ossietzky University of Oldenburg; 26111 Oldenburg Germany
| | - Daniel Mandler
- Institute of Chemistry; The Hebrew University of Jerusalem; Jerusalem 91904 Israel
| | - Gunther Wittstock
- Faculty for Mathematics and Natural Sciences; Center of Interface Science, Institute of Chemistry; Carl von Ossietzky University of Oldenburg; 26111 Oldenburg Germany
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10
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Liu D, Peng X, Wu B, Zheng X, Chuong TT, Li J, Sun S, Stucky GD. Uniform Concave Polystyrene-Carbon Core–Shell Nanospheres by a Swelling Induced Buckling Process. J Am Chem Soc 2015. [DOI: 10.1021/jacs.5b05027] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Deyu Liu
- Department
of Chemistry and Biochemistry, University of California, Santa Barbara, California 93106, United States
| | - Xinxing Peng
- Department
of Chemistry and Biochemistry, University of California, Santa Barbara, California 93106, United States
- State
Key Laboratory for Physical Chemistry of Solid Surfaces, Collaborative
Innovation Center of Chemistry for Energy Materials and Department
of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
| | - Binghui Wu
- Department
of Chemistry and Biochemistry, University of California, Santa Barbara, California 93106, United States
- State
Key Laboratory for Physical Chemistry of Solid Surfaces, Collaborative
Innovation Center of Chemistry for Energy Materials and Department
of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
| | - Xueyun Zheng
- Department
of Chemistry and Biochemistry, University of California, Santa Barbara, California 93106, United States
| | - Tracy T Chuong
- Department
of Chemistry and Biochemistry, University of California, Santa Barbara, California 93106, United States
| | - Jialuo Li
- Department
of Chemistry and Biochemistry, University of California, Santa Barbara, California 93106, United States
| | - Shigang Sun
- State
Key Laboratory for Physical Chemistry of Solid Surfaces, Collaborative
Innovation Center of Chemistry for Energy Materials and Department
of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
| | - Galen D. Stucky
- Department
of Chemistry and Biochemistry, University of California, Santa Barbara, California 93106, United States
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11
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Nanoparticles selectively immobilized onto large arrays of gold micro and nanostructures through surface chemical functionalizations. J Colloid Interface Sci 2015; 447:152-8. [PMID: 25490855 DOI: 10.1016/j.jcis.2014.11.028] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2014] [Revised: 10/31/2014] [Accepted: 11/10/2014] [Indexed: 11/20/2022]
Abstract
Latex nanoparticles (100nm and 200nm diameter) were precisely located onto the gold regions of micro and nanopatterned gold/silica substrates through surface chemical functionalizations. The gold patterns were selectively functionalized with alkylthiols bearing biotin or amine headgroups. This selective functionalization allowed the trapping of streptavidin- or carboxy-functionalized latex nanoparticles onto the gold structures with very little non-specific adsorption onto the surrounding silica. Quantitative data of nanoparticle capture on gold and silica, obtained through SEM image analysis, showed a one to two order of magnitude increase on gold with a similar low coverage on silica (non-specific adsorption) thanks to chemical functionalizations. Single nanoparticles were captured at the gap of dimer gold nanostructures.
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12
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Greben K, Li P, Mayer D, Offenhäusser A, Wördenweber R. Immobilization and surface functionalization of gold nanoparticles monitored via streaming current/potential measurements. J Phys Chem B 2015; 119:5988-94. [PMID: 25905436 DOI: 10.1021/acs.jpcb.5b02615] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
A streaming current/potential method is optimized and used for the analysis of the variation of the surface potential upon chemical modifications of a complex interface consisting of different organic molecules and gold nanoparticles (AuNPs). The surfaces of Si/SiO2 substrates modified with 3-aminopropyltriethoxysilane (APTES), AuNPs, and 11-amino-1-undecanethiol (aminothiols) are analyzed via pH and time dependent ζ potential measurements that reveal the stability and modification of the surface and identify crucial parameters for each individual preparation step. For instance, surface activation and especially molecular adsorbate layers tend not to be stable in time, whereas the substrate and the AuNPs provide a stable surface potential as long as impurities are avoided. It is shown that the streaming potential/current technique represents an ideal tool to analyze and monitor the complex surfaces and their modification.
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Affiliation(s)
- Kyrylo Greben
- Peter Grünberg Institute (PGI-8), Forschungszentrum Jülich GmbH, Jülich 52425, Germany
| | - Pinggui Li
- Peter Grünberg Institute (PGI-8), Forschungszentrum Jülich GmbH, Jülich 52425, Germany
| | - Dirk Mayer
- Peter Grünberg Institute (PGI-8), Forschungszentrum Jülich GmbH, Jülich 52425, Germany
| | - Andreas Offenhäusser
- Peter Grünberg Institute (PGI-8), Forschungszentrum Jülich GmbH, Jülich 52425, Germany
| | - Roger Wördenweber
- Peter Grünberg Institute (PGI-8), Forschungszentrum Jülich GmbH, Jülich 52425, Germany
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13
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Li P, Greben K, Wördenweber R, Simon U, Offenhäusser A, Mayer D. Tuning neuron adhesion and neurite guiding using functionalized AuNPs and backfill chemistry. RSC Adv 2015. [DOI: 10.1039/c5ra06901g] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Gold nanoparticles are used to investigate the dependence of neuron adhesion on the density of cell binding sites and particle backfill. Neurons viability and neurite development depend differently on cell attractive and cell repellant surface cues.
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Affiliation(s)
- Pinggui Li
- Peter Grünberg Institute (PGI-8) and Institute of Complex Systems (ICS-8)
- Forschungszentrum Jülich GmbH
- 52428 Jülich
- Germany
- JARA – Fundamentals of Future Information Technology
| | - Kyrylo Greben
- Peter Grünberg Institute (PGI-8) and Institute of Complex Systems (ICS-8)
- Forschungszentrum Jülich GmbH
- 52428 Jülich
- Germany
- JARA – Fundamentals of Future Information Technology
| | - Roger Wördenweber
- Peter Grünberg Institute (PGI-8) and Institute of Complex Systems (ICS-8)
- Forschungszentrum Jülich GmbH
- 52428 Jülich
- Germany
- JARA – Fundamentals of Future Information Technology
| | - Ulrich Simon
- Institute of Inorganic Chemistry
- RWTH Aachen University
- 52074 Aachen
- Germany
- JARA – Fundamentals of Future Information Technology
| | - Andreas Offenhäusser
- Peter Grünberg Institute (PGI-8) and Institute of Complex Systems (ICS-8)
- Forschungszentrum Jülich GmbH
- 52428 Jülich
- Germany
- JARA – Fundamentals of Future Information Technology
| | - Dirk Mayer
- Peter Grünberg Institute (PGI-8) and Institute of Complex Systems (ICS-8)
- Forschungszentrum Jülich GmbH
- 52428 Jülich
- Germany
- JARA – Fundamentals of Future Information Technology
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14
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Evcimen NI, Coskun S, Kozanoglu D, Ertas G, Unalan HE, Nalbant Esenturk E. Growth of branched gold nanoparticles on solid surfaces and their use as surface-enhanced Raman scattering substrates. RSC Adv 2015. [DOI: 10.1039/c5ra18570j] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Branched gold nanoparticles were synthesized directly on solid surfaces (silicon, glass, ITO) in high yield. They revealed strong SERS activity for the detection of R6G with an enhancement factor estimated as greater than 8 orders of magnitude.
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Affiliation(s)
- N. I. Evcimen
- Department of Chemistry
- Middle East Technical University (METU)
- 06800 Ankara
- Turkey
| | - S. Coskun
- Department of Metallurgical and Materials Engineering
- METU
- 06800 Ankara
- Turkey
| | - D. Kozanoglu
- Micro and Nanotechnology Program
- METU
- 06800 Ankara
- Turkey
| | - G. Ertas
- Department of Chemistry
- Middle East Technical University (METU)
- 06800 Ankara
- Turkey
| | - H. E. Unalan
- Department of Metallurgical and Materials Engineering
- METU
- 06800 Ankara
- Turkey
- Micro and Nanotechnology Program
| | - E. Nalbant Esenturk
- Department of Chemistry
- Middle East Technical University (METU)
- 06800 Ankara
- Turkey
- Micro and Nanotechnology Program
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15
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Li Y, Chopra N. Fabrication of nanoscale heterostructures comprised of graphene-encapsulated gold nanoparticles and semiconducting quantum dots for photocatalysis. Phys Chem Chem Phys 2015; 17:12881-93. [DOI: 10.1039/c5cp00928f] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Patterned growth of multilayer graphene shell encapsulated gold nanoparticles (GNPs) and their covalent linking with inorganic quantum dots are demonstrated.
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Affiliation(s)
- Yuan Li
- Metallurgical and Materials Engineering Department
- Center for Materials for Information Technology (MINT)
- The University of Alabama
- Tuscaloosa
- USA
| | - Nitin Chopra
- Metallurgical and Materials Engineering Department
- Center for Materials for Information Technology (MINT)
- The University of Alabama
- Tuscaloosa
- USA
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16
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Gilles S, Tuchscherer A, Lang H, Simon U. Dip-pen-based direct writing of conducting silver dots. J Colloid Interface Sci 2013; 406:256-62. [DOI: 10.1016/j.jcis.2013.05.047] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2013] [Revised: 05/17/2013] [Accepted: 05/20/2013] [Indexed: 10/26/2022]
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17
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Ross AM, Lahann J. Surface engineering the cellular microenvironment via patterning and gradients. ACTA ACUST UNITED AC 2013. [DOI: 10.1002/polb.23275] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
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18
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Schaal PA, Simon U. Guided immobilisation of single gold nanoparticles by chemical electron beam lithography. BEILSTEIN JOURNAL OF NANOTECHNOLOGY 2013; 4:336-44. [PMID: 23766959 PMCID: PMC3678398 DOI: 10.3762/bjnano.4.39] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/25/2013] [Accepted: 05/17/2013] [Indexed: 05/06/2023]
Abstract
The fabrication of periodic arrays of single metal nanoparticles is of great current interest. In this paper we present a straight-forward three-step procedure based on chemical electron beam lithography, which is capable of producing such arrays with gold nanoparticles (AuNPs). Preformed 6 nm AuNPs are immobilised on thiol patterns with a pitch of 100 nm by guided self-assembly. Afterwards, these arrays are characterised by using atomic force microscopy.
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Affiliation(s)
- Patrick A Schaal
- Institute of Inorganic Chemistry and JARA – Fundamentals of Future Information Technology, RWTH Aachen University, Landoltweg 1, D-52056 Aachen, Germany
| | - Ulrich Simon
- Institute of Inorganic Chemistry and JARA – Fundamentals of Future Information Technology, RWTH Aachen University, Landoltweg 1, D-52056 Aachen, Germany
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19
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Kolíbal M, Konečný M, Ligmajer F, Škoda D, Vystavěl T, Zlámal J, Varga P, Šikola T. Guided assembly of gold colloidal nanoparticles on silicon substrates prepatterned by charged particle beams. ACS NANO 2012; 6:10098-10106. [PMID: 23181715 DOI: 10.1021/nn3038226] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
Colloidal gold nanoparticles represent technological building blocks which are easy to fabricate while keeping full control of their shape and dimensions. Here, we report on a simple two-step maskless process to assemble gold nanoparticles from a water colloidal solution at specific sites of a silicon surface. First, the silicon substrate covered by native oxide is exposed to a charged particle beam (ions or electrons) and then immersed in a HF-modified solution of colloidal nanoparticles. The irradiation of the native oxide layer by a low-fluence charged particle beam causes changes in the type of surface-terminating groups, while the large fluences induce even more profound modification of surface composition. Hence, by a proper selection of the initial substrate termination, solution pH, and beam fluence, either positive or negative deposition of the colloidal nanoparticles can be achieved.
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Affiliation(s)
- Miroslav Kolíbal
- Institute of Physical Engineering, Brno University of Technology, Technická 2, 616 69 Brno, Czech Republic.
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20
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Gilles S, Winter S, Michael KE, Meffert SH, Li P, Greben K, Simon U, Offenhäusser A, Mayer D. Control of cell adhesion and neurite outgrowth by patterned gold nanoparticles with tunable attractive or repulsive surface properties. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2012; 8:3357-67. [PMID: 22826008 DOI: 10.1002/smll.201200465] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/01/2012] [Revised: 04/24/2012] [Indexed: 05/06/2023]
Abstract
Guiding of neuronal cells on surfaces is required for the investigation of fundamental aspects of neurobiology, for tissue engineering, and for numerous bioelectronic applications. A modular method to establish nanostructured chemical templates for local deposition of gold nanoparticles is presented. A process comprising nanoimprint lithography, silanization, lift-off, and gold nanoparticle immobilization is used to fabricate the particle patterns. The chemical composition of the surface can be modified by in situ adsorption of cell-binding ligands to locally addressed particles. The versatility of this approach is demonstrated by inverting the binding affinity between rat cortical neurons and nanopatterned surfaces via wet-chemical means and thereby reversing the pattern of guided neurons.
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Affiliation(s)
- Sandra Gilles
- Peter Grünberg Institute, Forschungszentrum Jülich GmbH, 52428 Jülich, Germany
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21
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Adams SM, Campione S, Caldwell JD, Bezares FJ, Culbertson JC, Capolino F, Ragan R. Non-lithographic SERS substrates: tailoring surface chemistry for Au nanoparticle cluster assembly. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2012; 8:2239-2249. [PMID: 22528745 DOI: 10.1002/smll.201102708] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/22/2011] [Revised: 03/13/2012] [Indexed: 05/31/2023]
Abstract
Near-field plasmonic coupling and local field enhancement in metal nanoarchitectures, such as arrangements of nanoparticle clusters, have application in many technologies from medical diagnostics, solar cells, to sensors. Although nanoparticle-based cluster assemblies have exhibited signal enhancements in surface-enhanced Raman scattering (SERS) sensors, it is challenging to achieve high reproducibility in SERS response using low-cost fabrication methods. Here an innovative method is developed for fabricating self-organized clusters of metal nanoparticles on diblock copolymer thin films as SERS-active structures. Monodisperse, colloidal gold nanoparticles are attached via a crosslinking reaction on self-organized chemically functionalized poly(methyl methacrylate) domains on polystyrene-block-poly(methyl methacrylate) templates. Thereby nanoparticle clusters with sub-10-nanometer interparticle spacing are achieved. Varying the molar concentration of functional chemical groups and crosslinking agent during the assembly process is found to affect the agglomeration of Au nanoparticles into clusters. Samples with a high surface coverage of nanoparticle cluster assemblies yield relative enhancement factors on the order of 10⁹ while simultaneously producing uniform signal enhancements in point-to-point measurements across each sample. High enhancement factors are associated with the narrow gap between nanoparticles assembled in clusters in full-wave electromagnetic simulations. Reusability for small-molecule detection is also demonstrated. Thus it is shown that the combination of high signal enhancement and reproducibility is achievable using a completely non-lithographic fabrication process, thereby producing SERS substrates having high performance at low cost.
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Affiliation(s)
- Sarah M Adams
- Department of Chemical Engineering and Materials Science, University of California, Irvine, Irvine, CA 92697, USA
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22
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Solid Phase Supported “Click”-Chemistry Approach for the Preparation of Water Soluble Gold Nanoparticle Dimers. J CLUST SCI 2012. [DOI: 10.1007/s10876-012-0494-7] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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23
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Yang J, Ichii T, Murase K, Sugimura H, Kondo T, Masuda H. Nanotemplate Prepared by Means of Vacuum Ultraviolet Patterning of Alkylsilane Self-assembled Monolayer on ITO Using a Porous Alumina Mask: Application to the Fabrication of Gold Nanoparticle Arrays. CHEM LETT 2012. [DOI: 10.1246/cl.2012.392] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Jeonghyeon Yang
- Department of Materials Science and Engineering, Kyoto University
| | - Takashi Ichii
- Department of Materials Science and Engineering, Kyoto University
| | - Kuniaki Murase
- Department of Materials Science and Engineering, Kyoto University
| | | | | | - Hideki Masuda
- Kanagawa Academy of Science and Technology
- Department of Urban Environmental Sciences, Tokyo Metropolitan University
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