1
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Huang Q, Qin D, Xia Y. Seeing is believing: what is on the surface of silver nanocrystals suspended in their original reaction solution. Chem Sci 2024; 15:6321-6330. [PMID: 38699255 PMCID: PMC11062097 DOI: 10.1039/d4sc00730a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2024] [Accepted: 03/31/2024] [Indexed: 05/05/2024] Open
Abstract
Colloidal synthesis of inorganic nanocrystals always involves a multitude of ionic and molecular species. How the chemical species affect the evolution of nanocrystals remains a black box. As an essential ingredient in the polyol synthesis of Ag nanocubes, Cl- has been proposed to co-adsorb on the surface with poly(vinyl pyrrolidone) (PVP) to facilitate shape evolution. However, there is still no direct evidence to confirm the presence of Cl- on the surface of Ag nanocubes while they are suspended in the original reaction solution. By leveraging the high sensitivity of surface-enhanced Raman scattering, here we offer direct evidence, for the first time, by resolving the Ag-Cl vibrational peak at 240 cm-1. This characteristic peak disappears if the synthesis is conducted in the absence of Cl-. Instead, three peaks associated with CF3COO- (from the precursor to Ag) are observed. When the sample is diluted with ethylene glycol, all the peaks associated with CF3COO- decrease proportionally in intensity, implying the involvement of chemisorption and negligible desorption during dilution. The chemisorbed CF3COO- is readily replaced by Cl- due to their major difference in binding strength. The co-adsorbed Cl- forces the carbonyl group of PVP binding to the Ag surface to take a more perpendicular configuration, enhancing its peak intensity. Altogether, these findings shed new light on the roles played by various chemical species in a successful synthesis of Ag nanocubes.
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Affiliation(s)
- Qijia Huang
- School of Chemistry and Biochemistry, Georgia Institute of Technology Atlanta Georgia 30332 USA
| | - Dong Qin
- School of Materials Science and Engineering, Georgia Institute of Technology Atlanta Georgia 30332 USA
| | - Younan Xia
- School of Chemistry and Biochemistry, Georgia Institute of Technology Atlanta Georgia 30332 USA
- The Wallace H. Coulter Department of Biomedical Engineering Georgia Institute of Technology and Emory University Atlanta Georgia 30332 USA
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2
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Linul P, Bănică R, Grad O, Linul E, Vaszilcsin N. Highly Electroconductive Metal-Polymer Hybrid Foams Based on Silver Nanowires: Manufacturing and Characterization. Polymers (Basel) 2024; 16:608. [PMID: 38475292 DOI: 10.3390/polym16050608] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2024] [Revised: 02/12/2024] [Accepted: 02/19/2024] [Indexed: 03/14/2024] Open
Abstract
Due to their electroconductive properties, flexible open-cell polyurethane foam/silver nanowire (PUF/AgNW) structures can provide an alternative for the construction of cheap pressure transducers with limited lifetimes or used as filter media for air conditioning units, presenting bactericidal and antifungal properties. In this paper, highly electroconductive metal-polymer hybrid foams (MPHFs) based on AgNWs were manufactured and characterized. The electrical resistance of MPHFs with various degrees of AgNW coating was measured during repeated compression. For low degrees of AgNW coating, the decrease in electrical resistance during compression occurs in steps and is not reproducible with repeated compression cycles due to the reduced number of electroconductive zones involved in obtaining electrical conductivity. For high AgNW coating degrees, the decrease in resistance is quasi-linear and reproducible after the first compression cycle. However, after compression, cracks appear in the foam cell structure, which increases the electrical resistance and decreases the mechanical strength. It can be considered that PUFs coated with AgNWs have a compression memory effect and can be used as cheap solutions in industrial processes in which high precision is not required, such as exceeding a maximum admissible load or as ohmic seals for product security.
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Affiliation(s)
- Petrică Linul
- Faculty of Industrial Chemistry and Environmental Engineering, Politehnica University Timisoara, Piata Victoriei 2, 300 006 Timisoara, Romania
| | - Radu Bănică
- National Institute for Research and Development in Electrochemistry and Condensed Matter, Dr. A. Paunescu Podeanu Street, No. 144, 300 569 Timisoara, Romania
| | - Oana Grad
- Research Institute for Renewable Energy, Politehnica University Timisoara, 138 Gavril Musicescu, 300 501 Timisoara, Romania
| | - Emanoil Linul
- Department of Mechanics and Strength of Materials, Politehnica University Timisoara, 1 Mihai Viteazu Avenue, 300 222 Timisoara, Romania
| | - Nicolae Vaszilcsin
- Faculty of Industrial Chemistry and Environmental Engineering, Politehnica University Timisoara, Piata Victoriei 2, 300 006 Timisoara, Romania
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3
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Liao H, Xiao Y, Xiao T, Kuang H, Feng X, Sun X, Cui G, Duan X, Shi P. Novel Conductive AgNP-Based Adhesive Based on Novel Poly (Ionic Liquid)-Based Waterborne Polyurethane Chloride Salts for E-Textiles. Polymers (Basel) 2024; 16:540. [PMID: 38399919 PMCID: PMC10892050 DOI: 10.3390/polym16040540] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2024] [Revised: 01/27/2024] [Accepted: 02/09/2024] [Indexed: 02/25/2024] Open
Abstract
The emergence of novel e-textile materials that combine the inherent qualities of the textile substrate (lightweight, soft, breathable, durable, etc.) with the functionality of micro/nano-electronic materials (conductive, dielectric, sensing, etc.) has resulted in a trend toward miniaturization, integration, and intelligence in new electronic devices. However, the formation of a conductive network by micro/nano-conductive materials on textiles necessitates high-temperature sintering, which inevitably causes substrate aging and component damage. Herein, a bis-hydroxy-imidazolium chloride salt as a hard segment to synthesize a waterborne polyurethane (WPU) adhesive is designed and prepared. When used in nano-silver-based printing coatings, it offers strong adherence for coatings, reaching 16 N cm-1; on the other hand, the introduction of chloride ions enables low-temperature (60 °C) chemical sintering to address the challenge of secondary treatment and high-temperature sintering (>150 °C). Printed into flexible circuits, the resistivity can be controlled by the content of imidazolium salts anchored in the molecular chain of the WPU from a maximum resistivity of 3.1 × 107 down to 5.8 × 10-5 Ω m, and it can conduct a Bluetooth-type finger pulse detector with such low resistivity. As a flexible circuit, it also offers high stability against washing and adhesion, which the resistivity only reduces less than 20% after washing 10 times and adhesion. Owing to the adjustability of the resistivity, we fabricated an all-textile flexible pressure sensor that accurately differentiates different external pressures (min. 10 g, ~29 Pa), recognizes forms, and detects joint motions (finger bending and wrist flexion).
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Affiliation(s)
- Haiyang Liao
- School of Mechanical Engineering, Hunan University of Technology, Zhuzhou 412007, China; (H.L.)
- China Textile Academy (Zhejiang) Technology Research Institute Co., Ltd., Shaoxing 312071, China
| | - Yeqi Xiao
- School of Mechanical Engineering, Hunan University of Technology, Zhuzhou 412007, China; (H.L.)
| | - Tiemin Xiao
- School of Mechanical Engineering, Hunan University of Technology, Zhuzhou 412007, China; (H.L.)
| | - Hongjin Kuang
- School of Mechanical Engineering, Hunan University of Technology, Zhuzhou 412007, China; (H.L.)
| | - Xiaolong Feng
- School of Mechanical Engineering, Hunan University of Technology, Zhuzhou 412007, China; (H.L.)
| | - Xiao Sun
- School of Mechanical Engineering, Hunan University of Technology, Zhuzhou 412007, China; (H.L.)
| | - Guixin Cui
- China Textile Academy (Zhejiang) Technology Research Institute Co., Ltd., Shaoxing 312071, China
| | - Xiaofei Duan
- School of Mechanical Engineering, Hunan University of Technology, Zhuzhou 412007, China; (H.L.)
| | - Pu Shi
- School of Mechanical Engineering, Hunan University of Technology, Zhuzhou 412007, China; (H.L.)
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4
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Liu WC, Prentice JCA, Patrick CE, Watt AAR. Enhancing Conductivity of Silver Nanowire Networks through Surface Engineering Using Bidentate Rigid Ligands. ACS APPLIED MATERIALS & INTERFACES 2024; 16:4150-4159. [PMID: 38197866 PMCID: PMC10811619 DOI: 10.1021/acsami.3c15207] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/11/2023] [Revised: 12/17/2023] [Accepted: 12/18/2023] [Indexed: 01/11/2024]
Abstract
Solution processable metallic nanomaterials present a convenient way to fabricate conductive structures, which are necessary in all electronic devices. However, they tend to require post-treatments to remove the bulky ligands around them to achieve high conductivity. In this work, we present a method to formulate a post-treatment free conductive silver nanowire ink by controlling the type of ligands around the silver nanowires. We found that bidentate ligands with a rigid molecular structure were effective in improving the conductivity of the silver nanowire networks as they could maximize the number of linkages between neighboring nanowires. In addition, DFT calculations also revealed that ligands with good LUMO to silver energy alignment were more effective. Because of these reasons, fumaric acid was found to be the most effective ligand and achieved a large reduction in sheet resistance of 70% or higher depending on the nanowire network density. The concepts elucidated from this study would also be applicable to other solution processable nanomaterials systems such as quantum dots for photovoltaics or LEDs which also require good charge transport being neighboring nanoparticles.
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Affiliation(s)
- Wing Chung Liu
- Department of Materials, University of Oxford, 16 Parks Road, Oxford OX1 3PH, United
Kingdom
| | - Joseph C. A. Prentice
- Department of Materials, University of Oxford, 16 Parks Road, Oxford OX1 3PH, United
Kingdom
| | - Christopher E. Patrick
- Department of Materials, University of Oxford, 16 Parks Road, Oxford OX1 3PH, United
Kingdom
| | - Andrew A. R. Watt
- Department of Materials, University of Oxford, 16 Parks Road, Oxford OX1 3PH, United
Kingdom
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5
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Preparation of Hierarchically Porous PVP/ZIF-8 in Supercritical CO2 by PVP-Induced Defect-Formation Method for High-Efficiency Gas Adsorption. Sep Purif Technol 2023. [DOI: 10.1016/j.seppur.2023.123550] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/12/2023]
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6
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Stark K, Cheng C, Hitchcock JP, White AL, Hondow N, Biggs S, Cayre OJ. Controlling adsorption density of polymer-stabilised metal nanoparticles at the oil-water interface. J Colloid Interface Sci 2022; 628:840-850. [DOI: 10.1016/j.jcis.2022.08.015] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2022] [Revised: 06/20/2022] [Accepted: 08/02/2022] [Indexed: 12/18/2022]
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7
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Son Y, Kim BH, Choi BK, Luo Z, Kim J, Kim GH, Park SJ, Hyeon T, Mehraeen S, Park J. In Situ Liquid Phase TEM of Nanoparticle Formation and Diffusion in a Phase-Separated Medium. ACS APPLIED MATERIALS & INTERFACES 2022; 14:22810-22817. [PMID: 35129321 DOI: 10.1021/acsami.1c20824] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Colloidal nanoparticles are synthesized in a complex reaction mixture that has an inhomogeneous chemical environment induced by local phase separation of the medium. Nanoparticle syntheses based on micelles, emulsions, flow of different fluids, injection of ionic precursors in organic solvents, and mixing the metal organic phase of precursors with an aqueous phase of reducing agents are well established. However, the formation mechanism of nanoparticles in the phase-separated medium is not well understood because of the complexity originating from the presence of phase boundaries as well as nonuniform chemical species, concentrations, and viscosity in different phases. Herein, we investigate the formation mechanism and diffusion of silver nanoparticles in a phase-separated medium by using liquid phase transmission electron microscopy and many-body dissipative particle dynamics simulations. A quantitative analysis of the individual growth trajectories reveals that a large portion of silver nanoparticles nucleate and grow rapidly at the phase boundaries, where metal ion precursors and reducing agents from the two separated phases react to form monomers. The results suggest that the motion of the silver nanoparticles at the interfaces is highly affected by the interaction with polymers and exhibits superdiffusive dynamics because of the polymer relaxation.
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Affiliation(s)
- Youngju Son
- Center for Nanoparticle Research, Institute for Basic Science (IBS), Seoul 08826, Republic of Korea
- School of Chemical and Biological Engineering, and Institute of Chemical Process, Seoul National University, Seoul 08826, Republic of Korea
| | - Byung Hyo Kim
- Center for Nanoparticle Research, Institute for Basic Science (IBS), Seoul 08826, Republic of Korea
- Department of Organic Materials and Fiber Engineering, Soongsil University, Seoul 06978, Republic of Korea
| | - Back Kyu Choi
- Center for Nanoparticle Research, Institute for Basic Science (IBS), Seoul 08826, Republic of Korea
- School of Chemical and Biological Engineering, and Institute of Chemical Process, Seoul National University, Seoul 08826, Republic of Korea
| | - Zhen Luo
- Department of Chemical Engineering, University of Illinois at Chicago, Chicago, Illinois 60607, United States
| | - Joodeok Kim
- Center for Nanoparticle Research, Institute for Basic Science (IBS), Seoul 08826, Republic of Korea
- School of Chemical and Biological Engineering, and Institute of Chemical Process, Seoul National University, Seoul 08826, Republic of Korea
| | - Ga-Hyun Kim
- Department of Chemistry and Nanoscience, Ewha Womans University, Seoul 03760, Republic of Korea
| | - So-Jung Park
- Department of Chemistry and Nanoscience, Ewha Womans University, Seoul 03760, Republic of Korea
| | - Taeghwan Hyeon
- Center for Nanoparticle Research, Institute for Basic Science (IBS), Seoul 08826, Republic of Korea
- School of Chemical and Biological Engineering, and Institute of Chemical Process, Seoul National University, Seoul 08826, Republic of Korea
| | - Shafigh Mehraeen
- Department of Chemical Engineering, University of Illinois at Chicago, Chicago, Illinois 60607, United States
| | - Jungwon Park
- Center for Nanoparticle Research, Institute for Basic Science (IBS), Seoul 08826, Republic of Korea
- School of Chemical and Biological Engineering, and Institute of Chemical Process, Seoul National University, Seoul 08826, Republic of Korea
- Institute of Engineering Research, College of Engineering, Seoul National University, Seoul 08826, Republic of Korea
- Advanced Institutes of Convergence Technology, Seoul National University, 145, Gwanggyo-ro, Yeongtong-gu, Suwon-si, Gyeonggi-do 16229, Republic of Korea
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8
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Baalousha M, Sikder M, Poulin BA, Tfaily MM, Hess NJ. Natural organic matter composition and nanomaterial surface coating determine the nature of platinum nanomaterial-natural organic matter corona. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 806:150477. [PMID: 34563904 DOI: 10.1016/j.scitotenv.2021.150477] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/11/2021] [Revised: 09/15/2021] [Accepted: 09/16/2021] [Indexed: 06/13/2023]
Abstract
Natural organic matter corona (NOM corona) is an interfacial area between nanomaterials (NMs) and the surrounding environment, which gives rise to NMs' unique surface identity. While the importance of the formation of natural organic matter (NOM) corona on engineered nanomaterials (NMs) to NM behavior, fate, and toxicity has been well-established, the understanding of how NOM molecular properties affect NOM corona composition remains elusive due to the complexity and heterogeneity of NOM. This is further complicated by the variation of NOMs from different origins. Here we use eight NOM isolates of different molecular composition and ultrahigh resolution Fourier-transform ion cyclotron resonance-mass spectrometry (ESI-FT-ICR-MS) to determine the molecular composition of platinum NM-NOM corona as a function of NOM composition and NM surface coating. We observed that the composition of PtNM-NOM corona varied with the composition of the original NOM. The percentage of NOM formulas that formed PVP-PtNM-NOM corona was higher than those formed citrate-PtNM-NOM corona, due to increased sorption of NOM formulas, in particular condensed hydrocarbons, to the PVP coating. The relative abundance of heteroatom formulas (CHON, CHOS, and CHOP) was higher in the PVP-PtNM-NOM corona than in citrate-PtNM-corona which was in turn higher than those in the original NOM isolate, indicating preferential partitioning of heteroatom-rich molecules to NM surfaces. The relative abundance of CHO, CHON, CHOS, CHOP and condensed hydrocarbons in PtNM-NOM corona increased with their increase in NOM isolates. Furthermore, PtNM-NOM corona is rich with compounds with high molecular weight. This study demonstrates that the composition and properties of PtNM-NOM corona depend on NOM molecular properties and PtNM surface coating. The results here provide evidence of molecular interactions between NOM and NMs, which are critical to understanding NM colloidal properties (e.g., surface charge and stability), interaction forces (e.g., van der Waals and hydrophobic), environmental behaviors (e.g., aggregation, dissolution, sulfidation, etc.), and biological effects (e.g., uptake, bioaccumulation, and toxicity).
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Affiliation(s)
- Mohammed Baalousha
- South Carolina SmartState Center for Environmental Nanoscience and Risk (CENR), Department of Environmental Health Sciences, University of South Carolina, Columbia, SC 29208, USA.
| | - Mithun Sikder
- South Carolina SmartState Center for Environmental Nanoscience and Risk (CENR), Department of Environmental Health Sciences, University of South Carolina, Columbia, SC 29208, USA
| | - Brett A Poulin
- U. S. Geological Survey, Boulder, CO 80303, USA; Department of Environmental Toxicology, University of California Davis, Davis, CA 95616, USA
| | - Malak M Tfaily
- Environmental Molecular Sciences Laboratory, Pacific Northwest National Laboratory, Richland, WA 99354, USA; Department of Environmental Science, University of Arizona, AZ, USA 85721
| | - Nancy J Hess
- Environmental Molecular Sciences Laboratory, Pacific Northwest National Laboratory, Richland, WA 99354, USA
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9
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Medina-Orta R, Labrada-Delgado GJ, Silva-Pereyra HG, Ortega EM, Pérez-Herranz V, Sánchez-Loredo MG. Synthesis of Gold Nanoparticles and Incorporation to a Porous Nickel Electrode to Improve its Catalytic Performance Towards the Hydrogen Evolution Reaction. Electrocatalysis (N Y) 2021. [DOI: 10.1007/s12678-021-00690-7] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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10
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Yang TH, Ahn J, Shi S, Qin D. Understanding the Role of Poly(vinylpyrrolidone) in Stabilizing and Capping Colloidal Silver Nanocrystals. ACS NANO 2021; 15:14242-14252. [PMID: 34436857 DOI: 10.1021/acsnano.1c01668] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
The ligands anchored to the surface of metal nanocrystals play an important role in controlling their colloidal synthesis for a broad spectrum of applications, but it remains a daunting challenge to investigate the ligand-surface and ligand-solvent interactions at the molecular level. Here, we report the use of surface-enhanced Raman scattering (SERS) to extract structural information about the binding of poly(vinylpyrrolidone) (PVP) to Ag nanocubes as well as its conformational changes in response to solvent quality. When a PVP chain binds to the surface of a Ag nanocube through some of its carbonyl groups, the segments between adjacent binding sites are expelled into the solvent as loops. As a result, the carbonyl peak (νC═O) resolved in the SERS spectrum includes the contributions from those anchored to the surface and those residing on the loops, with their frequencies located at νC═O(Ag) and νC═O(free), respectively. While νC═O(Ag) remains at a fixed frequency due to the coordination between the carbonyl groups with Ag surface, the spectral position of νC═O(free) is dependent on the solvent. As the strength of hydrogen bonding between PVP and solvent increases, the peak position of νC═O(free) shifts toward lower frequencies. When exposed to bad and good solvents in an alternating manner, the PVP loops undergo conformational changes between collapsed and extended states, altering the separation between the free carbonyl groups and the Ag surface and thereby the intensity of the νC═O peak.
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Affiliation(s)
- Tung-Han Yang
- School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332, United States
| | - Jaewan Ahn
- School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332, United States
| | - Shi Shi
- School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332, United States
| | - Dong Qin
- School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332, United States
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11
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Salahuddin N, Ali M, Al-Lohedan HA, Issa ZA, Barakat A, Ayad MM. Aniline- co- o-anthranilic Acid Copolymer-Chitosan/Ag@AgCl Nanohybrid as a Carrier for ( E)- N'-(Pyridin-2-ylmethylene) Hydrazinecarbothiohydrazide Release and Antimicrobial Activity. ACS OMEGA 2021; 6:21939-21951. [PMID: 34497889 PMCID: PMC8412903 DOI: 10.1021/acsomega.1c02212] [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: 04/27/2021] [Accepted: 07/15/2021] [Indexed: 06/13/2023]
Abstract
Poly(aniline-co-o-anthranilic acid)-chitosan/silver@silver chloride (PAAN-CS/Ag@AgCl) nanohybrids were synthesized using different ratios of Ag@AgCl through a facile one-step process. The presence of CS led to the formation of the nanohybrid structure and prevented the aggregation of the copolymer efficiently. The synthesized nanohybrids were fully characterized by transmission electron microscopy, X-ray diffraction, Fourier transform infrared (FTIR) spectroscopy, and thermogravimetric analysis. (E)-N'-(Pyridin-2-ylmethylene) hydrazinecarbothiohydrazide I was prepared using thiosemicarbazide and confirmed by 1H-NMR, 13C-NMR, and FTIR analyses. Loading of the azine derivative I using various concentrations at different pH values onto the nanohybrid was followed by UV-vis spectroscopy. Langmuir and Freundlich adsorption isotherm models were used to describe the equilibrium isotherm, and the adsorption followed the Langmuir adsorption isotherm. A pseudo-second-order model was used to describe the kinetic data. A PAAN-CS/Ag@AgCl nanohybrid loaded with azine I interestingly showed efficient antimicrobial activity against Escherichia coli and Staphylococcus aureus more than the azine derivative I. The release of azine I at different pH values (2-7.4) was investigated and the kinetics of release were studied using zero-order, first-order, second-order, Higuchi, Hixson-Crowell, and Korsmeyer-Peppas equations.
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Affiliation(s)
- Nehal
A. Salahuddin
- Chemistry
Department, Faculty of Science, Polymer Research Group, Tanta University, Tanta 31527, Egypt
| | - M. Ali
- Chemistry
Department, Faculty of Science, Tanta University, Tanta 31527, Egypt
| | - Hamad A. Al-Lohedan
- Surfactants
Research Chair, Department of Chemistry, College of Sciences, King Saud University, Riyadh 11451, Saudi Arabia
| | - Zuheir A. Issa
- Surfactants
Research Chair, Department of Chemistry, College of Sciences, King Saud University, Riyadh 11451, Saudi Arabia
| | - Assem Barakat
- Department
of Chemistry, Faculty of Science, Alexandria
University, P.O. Box 426, Ibrahimia, Alexandria 21321, Egypt
| | - Mohamad M. Ayad
- Chemistry
Department, Faculty of Science, Tanta University, Tanta 31527, Egypt
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12
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Sensing Atrazine Herbicide Degradation Products through Their Interactions with Humic Substances by Surface-Enhanced Raman Scattering. CHEMOSENSORS 2021. [DOI: 10.3390/chemosensors9060148] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
In this work, we have developed a simple method to carry out the quantitative analysis of deethylhydroxyatrazine (DEHA), the most abundant metabolite of atrazine herbicide (ATZ), based on the surface-enhanced Raman scattering technique. Since this ATZ product can undergo pH-dependent tautomerization, a previous characterization of the DEHA vibrational spectrum was accomplished. This study consisted of the Raman scattering study, both experimental and theoretical, of the enolic and ketonic tautomers of this molecule. SERS spectra were recorded at different pH in order to assess the effect of the metal surface in nanoparticles along with the pH on the structure of DEHA and to find the optimal experimental conditions of the quantitative detection of DEHA. Additionally, the interaction of DEHA with two types of humic acid reference standards, the Elliot humic and leonardite humic ones, was also performed by SERS. This interaction was conducted with two different objectives: to evaluate the interaction mechanism of the ATZ degradation product with humic substances and to check if this interaction can modify the sensitivity of the SERS detection of DEHA. The results presented in this study have clearly demonstrated that SERS spectroscopy is a very powerful technique for characterizing DEHA and other triazine sub-products at a very low concentration in water and also for analyzing the interaction of these important pollutants with humic substances.
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13
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Rivas Aiello MB, Azcárate JC, Zelaya E, David Gara P, Bosio GN, Gensch T, Mártire DO. Photothermal therapy with silver nanoplates in HeLa cells studied by in situ fluorescence microscopy. Biomater Sci 2021; 9:2608-2619. [PMID: 33595000 DOI: 10.1039/d0bm01952f] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Photothermal therapy (PTT) is a noninvasive treatment for cancer relying on the incorporation of NIR-light absorbing nanomaterials into cells, which upon illumination release heat causing thermally induced cell death. We prove that irradiation of aqueous suspensions of poly(vinylpyrrolidone)-coated silver nanoplates (PVPAgNP) or PVPAgNP in HeLa cells with red or NIR lasers causes a sizeable photothermal effect, which in cells can be visualized with the temperature sensing fluorophore Rhodamine B (RhB) using spinning disk confocal fluorescence microscopy or fluorescence lifetime imaging. Upon red-light irradiation of cells that were incubated with both, RhB and PVPAgNP at concentrations with no adverse effects on cell viability, a substantial heat release is detected. Initiation of cell death by photothermal effect is observed by positive signals of fluorescent markers for early and late apoptosis. Surprisingly, a new nanomaterial-assisted cell killing mode is operating when PVPAgNP-loaded HeLa cells are excited with moderate powers of fs-pulsed NIR light. Small roundish areas are generated with bright and fast (<1 ns) decaying emission, which expand fast and destroy the whole cell in seconds. This characteristic emission is assigned to efficient optical breakdown initiation around the strongly absorbing PVPAgNP leading to plasma formation that spreads fast through the cell.
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Affiliation(s)
- María Belén Rivas Aiello
- Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas (INIFTA), Facultad de Ciencias Exactas, Universidad Nacional de La Plata, C. C. 16, Suc. 4, (1900) La Plata, Argentina.
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14
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Mireles L, Wu MR, Saadeh N, Yahia L, Sacher E. Physicochemical Characterization of Polyvinyl Pyrrolidone: A Tale of Two Polyvinyl Pyrrolidones. ACS OMEGA 2020; 5:30461-30467. [PMID: 33283094 PMCID: PMC7711691 DOI: 10.1021/acsomega.0c04010] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/19/2020] [Accepted: 10/16/2020] [Indexed: 05/25/2023]
Abstract
Of several samples of polyvinyl pyrrolidone (PVP) used to coat and stabilize freshly manufactured aqueous dispersions of silver nanoparticles, one batch gave anomalous results: the dispersion maintained continued stability, even on extensive dilution. Our efforts to understand this desirable feature concluded that the generally used spectral method of PVP purity verification, Fourier transform infrared (FTIR) spectroscopy, was incapable of answering our inquiry. This led to the employment of several other methods, including X-ray photoelectron and nuclear magnetic resonance spectroscopies, which ultimately revealed several possible reasons for the dilution stability, including incomplete PVP hydrolysis during manufacture and the presence of hydroperoxide contaminants. It led, as well, to explanations for the shortcomings of FTIR spectroscopy as a verification method for PVP purity.
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Affiliation(s)
- Laura
Karina Mireles
- Laboratoire
d’Innovation et d’Analyse de Bioperformance, Département
de Génie mécanique, École
Polytechnique, CP 6079, Succursale C-V, Montréal, Québec H3C 3A7, Canada
| | - Menq-Rong Wu
- Institute
of Biomedical Engineering, National Taiwan
University, No. 1, Sec.
4, Roosevelt Rd., Taipei 10617, Taiwan
| | - Nada Saadeh
- Laboratoire
d’Innovation et d’Analyse de Bioperformance, Département
de Génie mécanique, École
Polytechnique, CP 6079, Succursale C-V, Montréal, Québec H3C 3A7, Canada
| | - L’Hocine Yahia
- Laboratoire
d’Innovation et d’Analyse de Bioperformance, Département
de Génie mécanique, École
Polytechnique, CP 6079, Succursale C-V, Montréal, Québec H3C 3A7, Canada
| | - Edward Sacher
- Département
de Génie Physique, École Polytechnique, CP 6079, Succursale C-V, Montréal, Québec H3C 3A7, Canada
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15
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Yang T, Shi Y, Janssen A, Xia Y. Oberflächenstabilisatoren und ihre Rolle bei der formkontrollierten Synthese von kolloidalen Metall‐Nanokristallen. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.201911135] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Tung‐Han Yang
- The Wallace H. Coulter Department of Biomedical Engineering Georgia Institute of Technology and Emory University Atlanta GA 30332 USA
| | - Yifeng Shi
- School of Chemical and Biomolecular Engineering Georgia Institute of Technology Atlanta GA 30332 USA
| | - Annemieke Janssen
- School of Chemistry and Biochemistry Georgia Institute of Technology Atlanta GA 30332 USA
| | - Younan Xia
- The Wallace H. Coulter Department of Biomedical Engineering Georgia Institute of Technology and Emory University Atlanta GA 30332 USA
- School of Chemical and Biomolecular Engineering Georgia Institute of Technology Atlanta GA 30332 USA
- School of Chemistry and Biochemistry Georgia Institute of Technology Atlanta GA 30332 USA
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16
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Castro KB, Cooper JB. Single-pot two-temperature synthesis of high aspect ratio silver nanowires with narrow size distribution. Inorganica Chim Acta 2020. [DOI: 10.1016/j.ica.2020.119569] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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17
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Yang T, Shi Y, Janssen A, Xia Y. Surface Capping Agents and Their Roles in Shape‐Controlled Synthesis of Colloidal Metal Nanocrystals. Angew Chem Int Ed Engl 2020; 59:15378-15401. [DOI: 10.1002/anie.201911135] [Citation(s) in RCA: 98] [Impact Index Per Article: 24.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2019] [Indexed: 01/13/2023]
Affiliation(s)
- Tung‐Han Yang
- The Wallace H. Coulter Department of Biomedical Engineering Georgia Institute of Technology and Emory University Atlanta GA 30332 USA
| | - Yifeng Shi
- School of Chemical and Biomolecular Engineering Georgia Institute of Technology Atlanta GA 30332 USA
| | - Annemieke Janssen
- School of Chemistry and Biochemistry Georgia Institute of Technology Atlanta GA 30332 USA
| | - Younan Xia
- The Wallace H. Coulter Department of Biomedical Engineering Georgia Institute of Technology and Emory University Atlanta GA 30332 USA
- School of Chemical and Biomolecular Engineering Georgia Institute of Technology Atlanta GA 30332 USA
- School of Chemistry and Biochemistry Georgia Institute of Technology Atlanta GA 30332 USA
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18
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Zhang Y, Xu J, Yang Y, Sun B, Wang K, Zhu L. Impacts of Proteins on Dissolution and Sulfidation of Silver Nanowires in an Aquatic Environment: Importance of Surface Charges. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2020; 54:5560-5568. [PMID: 32259435 DOI: 10.1021/acs.est.0c00461] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
With increasing utilization of silver nanomaterials, growing concerns are raised on their deleterious effects to the environment. Once discharged in an aquatic environment, the interactions between silver nanowires (AgNWs) and proteins may significantly affect the environmental behaviors, fate, and toxicities of AgNWs. In the present study, three representative model proteins, including ovalbumin (OVA), bovine serum albumin (BSA), and lysozyme (LYZ), were applied to investigate the impacts of the interactions between proteins and AgNWs on the transformations (oxidative dissolution and sulfidation) of AgNWs in an aquatic environment. Fluorescence spectroscopy and isothermal titration calorimetry analyses indicated that there was very weak interaction between OVA or BSA and AgNWs, but there was a strong interaction between the positively charged LYZ and the negatively charged AgNWs. The presence of LYZ not only reversed the surface charge of AgNWs but also resulted in the breakup of the nanowire structure and increased the reactive surface area. The positively charged surface of AgNWs in the presence of LYZ favored the access of sulfide ions. As a consequence, the kinetics of oxidative dissolution and sulfidation of AgNWs were not affected by OVA and BSA but were significantly facilitated by LYZ. The results shed light on the important roles of electrostatic interactions between AgNWs and proteins, which may have important implications for evaluating the fate and effects of silver nanomaterials in complicated environments.
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Affiliation(s)
- Yinqing Zhang
- Key Laboratory of Pollution Processes and Environmental Criteria (Ministry of Education), Tianjin Key Laboratory of Environmental Remediation and Pollution Control, College of Environmental Science and Engineering, Nankai University, Tianjin 300350, P. R. China
| | - Jinliang Xu
- Key Laboratory of Pollution Processes and Environmental Criteria (Ministry of Education), Tianjin Key Laboratory of Environmental Remediation and Pollution Control, College of Environmental Science and Engineering, Nankai University, Tianjin 300350, P. R. China
| | - Yi Yang
- Key Laboratory of Pollution Processes and Environmental Criteria (Ministry of Education), Tianjin Key Laboratory of Environmental Remediation and Pollution Control, College of Environmental Science and Engineering, Nankai University, Tianjin 300350, P. R. China
| | - Binbin Sun
- Key Laboratory of Pollution Processes and Environmental Criteria (Ministry of Education), Tianjin Key Laboratory of Environmental Remediation and Pollution Control, College of Environmental Science and Engineering, Nankai University, Tianjin 300350, P. R. China
| | - Kunkun Wang
- Key Laboratory of Pollution Processes and Environmental Criteria (Ministry of Education), Tianjin Key Laboratory of Environmental Remediation and Pollution Control, College of Environmental Science and Engineering, Nankai University, Tianjin 300350, P. R. China
| | - Lingyan Zhu
- Key Laboratory of Pollution Processes and Environmental Criteria (Ministry of Education), Tianjin Key Laboratory of Environmental Remediation and Pollution Control, College of Environmental Science and Engineering, Nankai University, Tianjin 300350, P. R. China
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19
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Gong S, Yap LW, Zhu B, Cheng W. Multiscale Soft-Hard Interface Design for Flexible Hybrid Electronics. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2020; 32:e1902278. [PMID: 31468635 DOI: 10.1002/adma.201902278] [Citation(s) in RCA: 31] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/09/2019] [Revised: 06/20/2019] [Indexed: 06/10/2023]
Abstract
Emerging next-generation soft electronics will require versatile properties functioning under mechanical compliance, which will involve the use of different types of materials. As a result, control over material interfaces (particularly soft/hard interfaces) has become crucial and is now attracting intensive worldwide research efforts. A series of material and structural interface designs has been devised to improve interfacial adhesion, preventing failure of electromechanical properties under mechanical deformation. Herein, different soft/hard interface design strategies at multiple length scales in the context of flexible hybrid electronics are reviewed. The crucial role of soft ligands and/or polymers in controlling the morphologies of active nanomaterials and stabilizing them is discussed, with a focus on understanding the soft/hard interface at the atomic/molecular scale. Larger nanoscopic and microscopic levels are also discussed, to scrutinize viable intrinsic and extrinsic interfacial designs with the purpose of promoting adhesion, stretchability, and durability. Furthermore, the macroscopic device/human interface as it relates to real-world applications is analyzed. Finally, a perspective on the current challenges and future opportunities in the development of truly seamlessly integrated soft wearable electronic systems is presented.
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Affiliation(s)
- Shu Gong
- Department of Chemical Engineering, Monash University, Clayton, Victoria, 3800, Australia
- The Melbourne Centre for Nanofabrication, Clayton, 151 Wellington Road, Victoria, 3800, Australia
| | - Lim Wei Yap
- Department of Chemical Engineering, Monash University, Clayton, Victoria, 3800, Australia
- The Melbourne Centre for Nanofabrication, Clayton, 151 Wellington Road, Victoria, 3800, Australia
| | - Bowen Zhu
- Department of Chemical Engineering, Monash University, Clayton, Victoria, 3800, Australia
- The Melbourne Centre for Nanofabrication, Clayton, 151 Wellington Road, Victoria, 3800, Australia
| | - Wenlong Cheng
- Department of Chemical Engineering, Monash University, Clayton, Victoria, 3800, Australia
- The Melbourne Centre for Nanofabrication, Clayton, 151 Wellington Road, Victoria, 3800, Australia
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20
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Wang XM, Chen L, Sowade E, Rodriguez RD, Sheremet E, Yu CM, Baumann RR, Chen JJ. Ultra-Uniform and Very Thin Ag Nanowires Synthesized via the Synergy of Cl -, Br - and Fe 3+ for Transparent Conductive Films. NANOMATERIALS 2020; 10:nano10020237. [PMID: 32013163 PMCID: PMC7075136 DOI: 10.3390/nano10020237] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/13/2019] [Revised: 01/23/2020] [Accepted: 01/24/2020] [Indexed: 01/03/2023]
Abstract
The properties and applications of Ag nanowires (AgNWs) are closely related to their morphology and composition. Therefore, controlling the growth process of AgNWs is of great significance for technological applications and fundamental research. Here, silver nanowires (AgNWs) were synthesized via a typical polyol method with the synergistic effect of Cl−, Br−, and Fe3+ mediated agents. The synergistic impact of these mediated agents was investigated intensively, revealing that trace Fe3+ ions provided selective etching and hindered the strong etching effect from Cl− and Br− ions. Controlling this synergy allowed the obtainment of highly uniform AgNWs with sub-30 nm diameter and an aspect ratio of over 3000. Transparent conductive films (TCFs) based on these AgNWs without any post-treatment showed a very low sheet resistance of 4.7 Ω sq−1, a low haze of 1.08% at a high optical transmittance of 95.2% (at 550 nm), and a high figure of merit (FOM) of 1210. TCFs exhibited a robust electrical performance with almost unchanged resistance after 2500 bending cycles. These excellent high-performance characteristics demonstrate the enormous potential of our AgNWs in the field of flexible and transparent materials.
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Affiliation(s)
- Xiao-Ming Wang
- School of Materials and Energy, University of Electronic Science and Technology of China, Chengdu 610054, China
| | - Long Chen
- School of Materials and Energy, University of Electronic Science and Technology of China, Chengdu 610054, China
| | - Enrico Sowade
- Digital Printing and Imaging Technology, Chemnitz University of Technology, 09126 Chemnitz, Germany
| | - Raul D. Rodriguez
- Research School of Chemistry and Applied Biomedical Sciences, Tomsk Polytechnic University, 30 Lenin Ave, Tomsk 634050, Russia
| | - Evgeniya Sheremet
- Research School of Physics, Tomsk Polytechnic University, 30 Lenin Ave, Tomsk 634050, Russia
| | - Chun-Mei Yu
- School of Materials and Energy, University of Electronic Science and Technology of China, Chengdu 610054, China
| | - Reinhard R. Baumann
- Digital Printing and Imaging Technology, Chemnitz University of Technology, 09126 Chemnitz, Germany
| | - Jin-Ju Chen
- School of Materials and Energy, University of Electronic Science and Technology of China, Chengdu 610054, China
- Correspondence:
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21
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Kato T, Itakura N, Sugawara K. Preparation of Silver-Coated Al–Si Particles by a Polyol Method. JOURNAL OF CHEMICAL ENGINEERING OF JAPAN 2019. [DOI: 10.1252/jcej.19we075] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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22
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Uranium adsorption by polyvinylpyrrolidone/chitosan blended nanofibers. Carbohydr Polym 2019; 219:298-305. [DOI: 10.1016/j.carbpol.2019.05.041] [Citation(s) in RCA: 60] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2018] [Revised: 02/25/2019] [Accepted: 05/10/2019] [Indexed: 01/08/2023]
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23
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Chen G, Bi L, Yang Z, Chen L, Wang G, Ye C. Water-Based Purification of Ultrathin Silver Nanowires toward Transparent Conductive Films with a Transmittance Higher than 99. ACS APPLIED MATERIALS & INTERFACES 2019; 11:22648-22654. [PMID: 31190525 DOI: 10.1021/acsami.9b04425] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Ultrathin silver nanowires (UTAgNWs) are indispensable to achieve transparent conductive films (TCFs) with overall optoelectronic performance exceeding that of the state-of-the-art indium tin oxide films. Impurities in raw UTAgNW products severely impair the optical properties of TCFs. Unfortunately, highly effective and environment-friendly approaches for purification of UTAgNWs are still lacking. Herein, we report the purification of UTAgNWs using deionized water along with a small amount of surfactants as the purifying agent. TCFs coated with the purified UTAgNWs exhibit a light transmittance of 97.9% and a haze of 1.22% at a sheet resistance of 36.3 Ω sq-1 or a light transmittance of 99.8% and a haze of 0.47% at a sheet resistance of 187.3 Ω sq-1. Both the transmittance and the haze are among the best reported values for AgNW TCFs in the literature. The purification process does not involve any toxic or hazardous chemicals and is both scalable and cost-effective.
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Affiliation(s)
- Guinan Chen
- College of Materials Science and Engineering , Zhejiang University of Technology , Hangzhou 310014 , China
| | - Lili Bi
- College of Materials Science and Engineering , Zhejiang University of Technology , Hangzhou 310014 , China
| | - Zhonglin Yang
- College of Materials Science and Engineering , Zhejiang University of Technology , Hangzhou 310014 , China
| | - Liangjun Chen
- College of Materials Science and Engineering , Zhejiang University of Technology , Hangzhou 310014 , China
| | - Guixin Wang
- College of Materials Science and Engineering , Zhejiang University of Technology , Hangzhou 310014 , China
| | - Changhui Ye
- College of Materials Science and Engineering , Zhejiang University of Technology , Hangzhou 310014 , China
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24
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Park HJ, Jo Y, Lee SS, Lee SY, Choi Y, Jeong S. Printable Thick Copper Conductors from Optically Modulated Multidimensional Particle Mixtures. ACS APPLIED MATERIALS & INTERFACES 2019; 11:20134-20142. [PMID: 31056900 DOI: 10.1021/acsami.9b01855] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Printing techniques that enable the formation of arbitrarily designed architectures have been implemented in various research fields owing to their characteristic advantages in processing over other techniques. In particular, low-cost, printable conductors are of paramount importance in the production of highly functioning printed electronics. Among various candidates, copper (Cu) particle-based printable fluid has been regarded as the most promising constituent material in conjunction with the use of the flash-light-sintering (FLS) process in air. In this study, we synthesized surface-oxidation-suppressed Cu nanoparticles, sub-micronparticles, and flakes to regulate the optical absorption characteristics in FLS-processed, Cu-based printed conductors. Our results revealed clearly that the critical issues in FLS-processed conductors, namely, undesirable crack formation and a limitation of thickness, are resolved by adjusting the optical behaviors of particulate layers by variation of the composition of multidimensional mixture particles. It is suggested that crack-free, 13.2 μm thick printed Cu conductors can be generated with a resistivity of 11.4 μΩ cm by printing and FLS processes in air. The proposed alternative approach is demonstrated with electrical circuits comprising electrodes and interconnections.
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Affiliation(s)
- Hye Jin Park
- Division of Advanced Materials , Korea Research Institute of Chemical Technology (KRICT) , 141 Gajeong-ro , Yuseong-gu, Daejeon 305-600 , Korea
| | - Yejin Jo
- Division of Advanced Materials , Korea Research Institute of Chemical Technology (KRICT) , 141 Gajeong-ro , Yuseong-gu, Daejeon 305-600 , Korea
- Department of Chemical Convergence Materials , Korea University of Science and Technology (UST) , 217 Gajeong-ro , Yuseong-gu, Daejeon 305-350 , Korea
| | - Sun Sook Lee
- Division of Advanced Materials , Korea Research Institute of Chemical Technology (KRICT) , 141 Gajeong-ro , Yuseong-gu, Daejeon 305-600 , Korea
| | - Su Yeon Lee
- Division of Advanced Materials , Korea Research Institute of Chemical Technology (KRICT) , 141 Gajeong-ro , Yuseong-gu, Daejeon 305-600 , Korea
| | - Youngmin Choi
- Division of Advanced Materials , Korea Research Institute of Chemical Technology (KRICT) , 141 Gajeong-ro , Yuseong-gu, Daejeon 305-600 , Korea
- Department of Chemical Convergence Materials , Korea University of Science and Technology (UST) , 217 Gajeong-ro , Yuseong-gu, Daejeon 305-350 , Korea
| | - Sunho Jeong
- Department of Advanced Materials Engineering for Information and Electronics , Kyung Hee University , Yongin -shi, Gyeonggi-do 17104 , Korea
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25
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Kim JM, Jang K, Lee SJ. Electrically conductive polystyrene nanocomposites incorporated with aspect ratio‐controlled silver nanowires. J Appl Polym Sci 2019. [DOI: 10.1002/app.47927] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Affiliation(s)
- Jung Mock Kim
- Department of Polymer EngineeringThe University of Suwon 17 Wauan‐gil, Bongdam‐eup, Hwaseong Gyeonggi 18323 Republic of Korea
| | - Keon‐Soo Jang
- Department of Polymer EngineeringThe University of Suwon 17 Wauan‐gil, Bongdam‐eup, Hwaseong Gyeonggi 18323 Republic of Korea
| | - Seong Jae Lee
- Department of Polymer EngineeringThe University of Suwon 17 Wauan‐gil, Bongdam‐eup, Hwaseong Gyeonggi 18323 Republic of Korea
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26
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Electrical-Field Induced Nonlinear Conductive Characteristics of Polymer Composites Containing SiO2-Decorated Silver Nanowire Hybrids. J Inorg Organomet Polym Mater 2019. [DOI: 10.1007/s10904-019-01170-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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27
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Chen Z, Chang JW, Balasanthiran C, Milner ST, Rioux RM. Anisotropic Growth of Silver Nanoparticles Is Kinetically Controlled by Polyvinylpyrrolidone Binding. J Am Chem Soc 2019; 141:4328-4337. [DOI: 10.1021/jacs.8b11295] [Citation(s) in RCA: 51] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Zhifeng Chen
- Department of Chemical Engineering, Pennsylvania State University, University Park, Pennsylvania 16802, United States
| | - Ji Woong Chang
- Department of Chemical Engineering, Pennsylvania State University, University Park, Pennsylvania 16802, United States
- Department of Chemical Engineering, Kumoh National Institute of Technology, Gumi-si, Gyeongsangbuk-do 39177, South Korea
| | - Choumini Balasanthiran
- Department of Chemical Engineering, Pennsylvania State University, University Park, Pennsylvania 16802, United States
| | - Scott T. Milner
- Department of Chemical Engineering, Pennsylvania State University, University Park, Pennsylvania 16802, United States
| | - Robert M. Rioux
- Department of Chemical Engineering, Pennsylvania State University, University Park, Pennsylvania 16802, United States
- Department of Chemistry, Pennsylvania State University, University Park, Pennsylvania 16802, United States
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28
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Zhou H, Xia X, Lv P, Zhang J, Hou X, Zhao M, Ao K, Wang D, Lu K, Qiao H, Zimniewska M, Wei Q. C@TiO 2 /MoO 3 Composite Nanofibers with 1T-Phase MoS 2 Nanograin Dopant and Stabilized Interfaces as Anodes for Li- and Na-Ion Batteries. CHEMSUSCHEM 2018; 11:4060-4070. [PMID: 30288963 DOI: 10.1002/cssc.201801784] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/02/2018] [Revised: 08/26/2018] [Indexed: 06/08/2023]
Abstract
Integrating layered nanostructured MoS2 with a structurally stable TiO2 backbone to construct reciprocal MoS2 /TiO2 -based nanocomposites is an effective strategy. C@TiO2 /MoO3 composite nanofibers doped with 1T-phase MoS2 nanograins were fabricated by partially sulfurizing MoOx /TiO2 precursors. By controlling a suitable preoxidation temperature before severe thermolysis of polyvinylpyrrolidone (PVP), the MoOx /TiO2 precursors formed a polymer-embedded array through coordination of the Mo source and pyrrolidyl groups of PVP. Sulfidation under water/solvent hydrothermal conditions led to partial formation of metallic 1T-phase MoS2 from the MoOx precursor with preoxidation at 200 °C. After carbonization, the TiO2 /MoO3 /MoS2 nanograins were encapsulated in a carbon backbone in a vertical pattern, providing both chemical contact for confined electron transport and sufficient space to adapt to volume changes. The obtained carbon-based platform not only has the advantages of an integral structure, but also exhibited ultrastable specific capacities of 540 and 251 mAh g-1 for Li-ion batteries and Na-ion batteries, respectively, after 100 cycles.
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Affiliation(s)
- Huimin Zhou
- Key Laboratory of Eco-textiles, Ministry of Education, Jiangnan University, Wuxi, 214122, P. R. China
| | - Xin Xia
- College of Textiles and Clothing, Xinjiang University, Urumqi, 830049, P. R. China
| | - Pengfei Lv
- Key Laboratory of Eco-textiles, Ministry of Education, Jiangnan University, Wuxi, 214122, P. R. China
| | - Jin Zhang
- Key Laboratory of Eco-textiles, Ministry of Education, Jiangnan University, Wuxi, 214122, P. R. China
| | - Xuebin Hou
- Key Laboratory of Eco-textiles, Ministry of Education, Jiangnan University, Wuxi, 214122, P. R. China
| | - Min Zhao
- Key Laboratory of Eco-textiles, Ministry of Education, Jiangnan University, Wuxi, 214122, P. R. China
| | - Kelong Ao
- Key Laboratory of Eco-textiles, Ministry of Education, Jiangnan University, Wuxi, 214122, P. R. China
| | - Di Wang
- Key Laboratory of Eco-textiles, Ministry of Education, Jiangnan University, Wuxi, 214122, P. R. China
| | - Keyu Lu
- State Key Laboratory of Food Science & Technology, Jiangnan University, Wuxi, 214122, P. R. China
| | - Hui Qiao
- Key Laboratory of Eco-textiles, Ministry of Education, Jiangnan University, Wuxi, 214122, P. R. China
| | - Malgorzata Zimniewska
- Institute of Natural Fibers & Medicinal Plants, Ul Wojska Polskiego 71B, 60630, Poznan, Poland
| | - Qufu Wei
- Key Laboratory of Eco-textiles, Ministry of Education, Jiangnan University, Wuxi, 214122, P. R. China
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29
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Environmentally friendly synthesis and formation mechanism of copper nanowires with controlled aspect ratios from aqueous solution with ascorbic acid. J Colloid Interface Sci 2018; 531:109-118. [DOI: 10.1016/j.jcis.2018.07.036] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2018] [Revised: 06/29/2018] [Accepted: 07/11/2018] [Indexed: 11/24/2022]
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30
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Zhang Y, Zhang Q, Ouyang X, Lei DY, Zhang AP, Tam HY. Ultrafast Light-Controlled Growth of Silver Nanoparticles for Direct Plasmonic Color Printing. ACS NANO 2018; 12:9913-9921. [PMID: 30153416 DOI: 10.1021/acsnano.8b02868] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
A precision photoreduction technology for the ultrafast high-precision light-controlled growth of silver nanoparticles for printing plasmonic color images is presented. Ultraviolet (UV) patterns with about a million pixels are generated to temporally and spatially regulate the photoreduction of silver salts to precisely create around a million clusters of distinct silver nanoparticles on a titanium dioxide (TiO2)-capped quartz substrate. The silver nanoparticle-TiO2-quartz structure exhibits a Fano-like reflection spectrum, whose spectral dip can be tuned by the dimension of the silver nanoparticles for plasmonic color generation. This technology allows the one-step production of multiscale engineered large-area plasmonic substrates without the use of either nanostructured templates or additional nanofabrication processes and thus offers an approach to plasmonic engineering for a myriad of applications ranging from structural color decoration to plasmonic microdevices and biosensors.
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31
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Kang H, Buchman JT, Rodriguez RS, Ring HL, He J, Bantz KC, Haynes CL. Stabilization of Silver and Gold Nanoparticles: Preservation and Improvement of Plasmonic Functionalities. Chem Rev 2018; 119:664-699. [DOI: 10.1021/acs.chemrev.8b00341] [Citation(s) in RCA: 258] [Impact Index Per Article: 43.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Affiliation(s)
- Hyunho Kang
- Department of Chemistry, University of Minnesota, 207 Pleasant Street Southeast, Minneapolis, Minnesota 55455, United States
| | - Joseph T. Buchman
- Department of Chemistry, University of Minnesota, 207 Pleasant Street Southeast, Minneapolis, Minnesota 55455, United States
| | - Rebeca S. Rodriguez
- Department of Chemistry, University of Minnesota, 207 Pleasant Street Southeast, Minneapolis, Minnesota 55455, United States
| | - Hattie L. Ring
- Department of Chemistry, University of Minnesota, 207 Pleasant Street Southeast, Minneapolis, Minnesota 55455, United States
| | - Jiayi He
- Department of Chemistry, University of Minnesota, 207 Pleasant Street Southeast, Minneapolis, Minnesota 55455, United States
| | - Kyle C. Bantz
- Department of Chemistry, University of Minnesota, 207 Pleasant Street Southeast, Minneapolis, Minnesota 55455, United States
| | - Christy L. Haynes
- Department of Chemistry, University of Minnesota, 207 Pleasant Street Southeast, Minneapolis, Minnesota 55455, United States
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32
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Sugiyama S, Yokoyama S, Cuya Huaman JL, Ida S, Matsumoto T, Kodama D, Sato K, Miyamura H, Hirokawa Y, Balachandran J. Design of monoalcohol - Copolymer system for high quality silver nanowires. J Colloid Interface Sci 2018; 527:315-327. [PMID: 29803162 DOI: 10.1016/j.jcis.2018.05.011] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2018] [Revised: 04/28/2018] [Accepted: 05/07/2018] [Indexed: 11/26/2022]
Abstract
Research to improve the dimensional properties of silver nanowires (Ag NWs) for transparent conductive film (TCF) applications are being carried out intensively. However, the protocol for the designed synthesis of high-quality Ag NWs is yet to be developed due to the inadequacy of knowledge on the role of parameters. Here, we attempt to elucidate the role played by the parameters and propose a monoalcohol-copolymer based system for the designed synthesis of Ag NWs superior in quality to the one synthesized using conventional ethylene glycol (EG)-polyvinylpyrrolidone (PVP) system. The key findings of the study are as follows: (1) the solubility of Ag source and the partially formed AgCl particles in monoalcohols was found to play an important role not only in the reduction to metallic Ag but also on the uniaxial growth, (2) the adsorption of capping agents on Ag NWs was carried through O and N atoms in the base molecule and their binding energies indicated that the strength is the key parameter to obtain Ag NWs with high aspect ratio, (3) the properties of nanowire could be enhanced through copolymerization of VP and base molecules that have O- and N-based ligands, and (4) the influence of copolymerization on the physical and chemical properties of the surface active agent has been theoretically and experimentally verified. Consequently, we succeeded in the development of a new technique to synthesize high yield of Ag NWs with improved aspect ratio than EG-PVP system by using benzyl alcohol as reducing solvent and N-vinylpyrrolidone/N,N-diethylaminoethyl metacrylate copolymer as a capping agent. The optical transmittance and electrical resistivity of TCFs prepared using the Ag NWs with an average diameter of 43 nm, and an average length of 13 μm were 98.6% and R: 49.1 Ω/□, respectively.
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Affiliation(s)
- Shintaro Sugiyama
- Department of Materials Science, The University of Shiga Prefecture, Hikone 522-8533, Japan
| | - Shun Yokoyama
- Graduate School of Environmental Studies, Tohoku University, Sendai 980-8579, Japan
| | - Jhon L Cuya Huaman
- Department of Materials Science, The University of Shiga Prefecture, Hikone 522-8533, Japan.
| | - Shohei Ida
- Department of Materials Science, The University of Shiga Prefecture, Hikone 522-8533, Japan
| | - Takatoshi Matsumoto
- Institute of Multidisciplinary Research, Tohoku University, Sendai 980-8577, Japan
| | - Daisuke Kodama
- DOWA Electronics Materials Co. Ltd, Okayama 702-8506, Japan
| | - Kimitaka Sato
- DOWA Electronics Materials Co. Ltd, Okayama 702-8506, Japan
| | - Hiroshi Miyamura
- Department of Materials Science, The University of Shiga Prefecture, Hikone 522-8533, Japan
| | - Yoshitsugu Hirokawa
- Department of Materials Science, The University of Shiga Prefecture, Hikone 522-8533, Japan
| | - Jeyadevan Balachandran
- Department of Materials Science, The University of Shiga Prefecture, Hikone 522-8533, Japan.
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Tang L, Zhang J, Dong L, Pan Y, Yang C, Li M, Ruan Y, Ma J, Lu H. Coating-free, air-stable silver nanowires for high-performance transparent conductive film. NANOTECHNOLOGY 2018; 29:375601. [PMID: 29926812 DOI: 10.1088/1361-6528/aace11] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Silver nanowire (Ag NW) based films are considered as a promising alternative for traditional indium tin oxide but still suffer from some limitations, including insufficient conductivity, transparency and environmental instability. We here report a novel etching synthesis strategy to improve the performance of Ag NW films. Different from the traditional methods to synthesize high aspect ratios of NWs or employ electrically conductive coatings, we find it effective to reduce the high-reactivity defects of NWs for optimizing the comprehensive performance of Ag NW films. In this strategy etching can suppress the generation of high-reactivity defects and meanwhile the etching growth of NWs can be accomplished in an uneven ligand distribution environment. The resulting Ag NWs are uniformly straight with a sharp-edged structure. The transparent conductive film obtained exhibits simultaneous improvements in electrical conductivity, transparency and air stability. Even after exposure in air for 200 days and no protective coatings, the film can still meet the highest requirement of practical applications, with a figure of merit 361 (i.e., FoM > 350). These results not only demonstrate the importance of defect control in the synthesis of Ag NWs, but also pave a way for further optimizing the performance of Ag NW-based films.
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Affiliation(s)
- Long Tang
- State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science, Collaborative Innovation Center of Polymers and Polymer Composites, Fudan University, 2005 Songhu Road, Shanghai 200438, People's Republic of China
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Gu J, Wang X, Chen H, Yang S, Feng H, Ma X, Ji H, Wei J, Li M. Conductivity enhancement of silver nanowire networks via simple electrolyte solution treatment and solvent washing. NANOTECHNOLOGY 2018; 29:265703. [PMID: 29620018 DOI: 10.1088/1361-6528/aabbbc] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
As a promising replacement material for indium tin oxide in flexible electronics, silver nanowires (AgNWs) usually need complicated post-treatment to reduce the high contact resistance across the intersections when used as transparent conductive films. In this work, a widely applicable nano-joining method for improving the overall conductivity of AgNW networks with different kinds of electrolyte solutions is presented. By treatment with an electrolyte solution with appropriate ionic strengths, the insulating surfactant layer (polyvinylpyrrolidone, PVP) on the AgNWs could be desorbed, and the AgNW network could be densified. The sheet resistance of the AgNW film on a glass slide is reduced by 60.9% (from 67.5 to 26.4 Ohm sq-1) with a transmittance of 92.5%. High-resolution transmission electron microscopy analysis indicates that atomic diffusion occurs at the intersection of two AgNWs. Thus, metallurgical bonding on the nanometer scale is achieved across the junctions of the AgNWs, leading to a significant enhancement in the conductivity of the AgNW network.
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Affiliation(s)
- Jiahui Gu
- State Key Laboratory of Advanced Welding and Joining, Harbin Institute of Technology, Harbin 150001, People's Republic of China
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Understanding the Effects of NaCl, NaBr and Their Mixtures on Silver Nanowire Nucleation and Growth in Terms of the Distribution of Electron Traps in Silver Halide Crystals. NANOMATERIALS 2018. [PMID: 29538281 PMCID: PMC5869652 DOI: 10.3390/nano8030161] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
In recent years, many research groups have synthesized ultra-thin silver nanowires (AgNWs) with diameters below 30 nm by employing Cl− and Br− simultaneously in the polyol process. However, the yield of AgNWs in this method was low, due to the production of Ag nanoparticles (AgNPs) as an unwanted byproduct, especially in the case of high Br− concentration. Here, we investigated the roles of Cl− and Br− in the preparation of AgNWs and then synthesized high aspect ratio (up to 2100) AgNWs in high yield (>85% AgNWs) using a Cl− and Br− co-mediated method. We found that multiply-twinned particles (MTPs) with different critical sizes were formed and grew into AgNWs, accompanied by a small and large amount of AgNPs for the NaCl and NaBr additives, respectively. For the first time, we propose that the growth of AgNWs of different diameters and yields can be understood based on the electron trap distribution (ETD) of the silver halide crystals. For the case of Cl− and Br− co-additives, a mixed silver halide crystal of AgBr1−xClx was formed, rather than the AgBr/AgCl mixture reported previously. In this type of crystal, the ETD is uniform, which is beneficial for the synthesis of AgNWs with small diameter (30~40 nm) and high aspect ratio. AgNW transparent electrodes were prepared in air by rod coating. A sheet resistance of 48 Ω/sq and transmittance of 95% at 550 nm were obtained without any post-treatment.
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Zhang Z, Shen W, Xue J, Liu Y, Liu Y, Yan P, Liu J, Tang J. Recent advances in synthetic methods and applications of silver nanostructures. NANOSCALE RESEARCH LETTERS 2018; 13:54. [PMID: 29457198 PMCID: PMC5817054 DOI: 10.1186/s11671-018-2450-4] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/26/2017] [Accepted: 01/20/2018] [Indexed: 05/22/2023]
Abstract
As the advanced functional materials, silver nanoparticles are potentially useful in various fields such as photoelectric, bio-sensing, catalysis, antibacterial and other fields, which are mainly based on their various properties. However, the properties of silver nanoparticles are usually determined by their size, shape, and surrounding medium, which can be modulated by various synthesis methods. In this review, the fabrication methods for synthesizing silver nanoparticles of different shapes and specific size are illustrated in detail. Besides, the corresponding properties and applications of silver nanoparticles are also discussed in this paper.
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Affiliation(s)
- Zhi Zhang
- Institute of Hybrid Materials, National Center of International Research for Hybrid Materials Technology, National Base of International Science and Technology Cooperation, College of Materials Science and Engineering, Qingdao University, Qingdao, 266071 People’s Republic of China
| | - Wenfei Shen
- College of Materials Science and Engineering, Qingdao University, Qingdao, 266071 People’s Republic of China
| | - Jing Xue
- College of Materials Science and Engineering, Qingdao University, Qingdao, 266071 People’s Republic of China
| | - Yuanmeng Liu
- College of Materials Science and Engineering, Qingdao University, Qingdao, 266071 People’s Republic of China
| | - Yanwei Liu
- College of Materials Science and Engineering, Qingdao University, Qingdao, 266071 People’s Republic of China
| | - Peipei Yan
- College of Materials Science and Engineering, Qingdao University, Qingdao, 266071 People’s Republic of China
| | - Jixian Liu
- College of Materials Science and Engineering, Qingdao University, Qingdao, 266071 People’s Republic of China
| | - Jianguo Tang
- College of Materials Science and Engineering, Qingdao University, Qingdao, 266071 People’s Republic of China
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Hannon JC, Kerry JP, Cruz-Romero M, Azlin-Hasim S, Morris M, Cummins E. Kinetic desorption models for the release of nanosilver from an experimental nanosilver coating on polystyrene food packaging. INNOV FOOD SCI EMERG 2017. [DOI: 10.1016/j.ifset.2017.07.001] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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38
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Wang Y, Gu FQ, Ni LJ, Liang K, Marcus K, Liu SL, Yang F, Chen JJ, Feng ZS. Easily fabricated and lightweight PPy/PDA/AgNW composites for excellent electromagnetic interference shielding. NANOSCALE 2017; 9:18318-18325. [PMID: 29143001 DOI: 10.1039/c7nr05951e] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
Conductive polymer composites (CPCs) containing nanoscale conductive fillers have been widely studied for their potential use in various applications. In this paper, polypyrrole (PPy)/polydopamine (PDA)/silver nanowire (AgNW) composites with high electromagnetic interference (EMI) shielding performance, good adhesion ability and light weight are successfully fabricated via a simple in situ polymerization method followed by a mixture process. Benefiting from the intrinsic adhesion properties of PDA, the adhesion ability and mechanical properties of the PPy/PDA/AgNW composites are significantly improved. The incorporation of AgNWs endows the functionalized PPy with tunable electrical conductivity and enhanced EMI shielding effectiveness (SE). By adjusting the AgNW loading degree in the PPy/PDA/AgNW composites from 0 to 50 wt%, the electrical conductivity of the composites greatly increases from 0.01 to 1206.72 S cm-1, and the EMI SE of the composites changes from 6.5 to 48.4 dB accordingly (8.0-12.0 GHz, X-band). Moreover, due to the extremely low density of PPy, the PPy/PDA/AgNW (20 wt%) composites show a superior light weight of 0.28 g cm-3. In general, it can be concluded that the PPy/PDA/AgNW composites with tunable electrical conductivity, good adhesion properties and light weight can be used as excellent EMI shielding materials.
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Affiliation(s)
- Yan Wang
- State Key Laboratory of Electronic Thin Films and Integrated Devices, University of Electronic Science and Technology of China, Chengdu 610054, P. R. China.
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39
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Fabrication of PLA/Ag nanofibers by green synthesis method using Momordica charantia fruit extract for wound dressing applications. Colloids Surf A Physicochem Eng Asp 2017. [DOI: 10.1016/j.colsurfa.2017.06.066] [Citation(s) in RCA: 64] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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40
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Sintering Inhibition of Silver Nanoparticle Films via AgCl Nanocrystal Formation. NANOMATERIALS 2017; 7:nano7080224. [PMID: 28817099 PMCID: PMC5575706 DOI: 10.3390/nano7080224] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/20/2017] [Revised: 08/10/2017] [Accepted: 08/11/2017] [Indexed: 11/28/2022]
Abstract
Electrically conductive films are key components in most printed and flexible electronics applications. For the solution processing of conductive films, inks containing silver nanoparticles (AgNPs) remain important because of their relatively easy processing and generally low resistivity after a sintering procedure. Because the commonly used, moderate sintering temperatures of 150–300 °C are still too high for most low-cost flexible substrates, expanding the knowledge of surface-ink interactions that affect the sintering temperature is desirable. It is known that chloride ions can assist the sintering of AgNP films by displacing capping agents on the surfaces of AgNPs. However, very little is known about other possible Cl-AgNP interactions that affect the resistivity and no interaction having the opposite effect (sintering inhibition) has been identified before. Here we identify such a Cl-AgNP interaction giving sintering inhibition and find that the mechanism involves the formation of AgCl nanocrystals within the AgNP film. The AgCl formation was observed after inkjet-printing of AgNP inks with polyvinylpyrrolidone (PVP) as the capping agent onto papers with quick-absorbing coatings containing 0.3 wt % KCl. Our findings show that chloride can have opposite roles during sintering, either assisting or inhibiting the sintering depending on the prevalence of AgCl formation. The prevalence of AgCl formation depends on the absorption properties and the capping agent.
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41
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Hui Z, Liu Y, Guo W, Li L, Mu N, Jin C, Zhu Y, Peng P. Chemical sintering of direct-written silver nanowire flexible electrodes under room temperature. NANOTECHNOLOGY 2017; 28:285703. [PMID: 28574853 DOI: 10.1088/1361-6528/aa76ce] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Transparent and flexible electrodes on cost effective plastic substrates for wearable electronics have attract great attention recently. Due to the conductivity and flexibility in network form, metal nanowire is regarded as one of the most promising candidates for flexible electrode fabrication. Prior to application, low temperature joining of nanowire processes are required to reduce the resistance of electrodes and simultaneously maintain the dimensionality and uniformity of those nanowires. In the present work, we presented an innovative, robust and cost effective method to minimize the heat effect to plastic substrate and silver nanowires which allows silver nanowire electrodes been directly written on polycarbonate substrate and sintered by different electrolyte solutions at room temperature or near. It has been rigorously demonstrated that the resistance of silver nanowire electrodes has been reduced by 90% after chemical sintering at room temperature due to the joining of silver nanowires at junction areas. After ∼1000 bending cycles, the measured resistance of silver nanowire electrode was stable during both up-bending and down-bending states. The changes of silver nanowires after sintering were characterized using x-ray photoelectron spectroscopy and transmission electron microscopy and a sintering mechanism was proposed and validated. This direct-written silver nanowire electrode with good performance has broad applications in flexible electronics fabrication and packaging.
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Affiliation(s)
- Zhuang Hui
- Beijing Key Laboratory of Materials Utilization of Nonmetallic Minerals and Solid Wastes, National Laboratory of Mineral Materials, School of Materials Science and Technology, China University of Geosciences, Beijing 100083, People's Republic of China. School of Mechanical Engineering and Automation, Beihang University, Beijing 100191, People's Republic of China
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42
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Liu H, Yu Y, Yang W, Lei W, Gao M, Guo S. High-density defects on PdAg nanowire networks as catalytic hot spots for efficient dehydrogenation of formic acid and reduction of nitrate. NANOSCALE 2017; 9:9305-9309. [PMID: 28678238 DOI: 10.1039/c7nr03734a] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Controlling the surface defects of nanocrystals is a new way of tuning/boosting their catalytic properties. Herein, we report networked PdAg nanowires (NWs) with high-density defects as catalytic hot spots for efficient catalytic dehydrogenation of formic acid (FA) and catalytic reduction of nitrates. The networked PdAg NWs exhibit composition-dependent catalytic activity for the dehydrogenation reaction of FA without any additive, with Pd5Ag5 NWs exhibiting the highest activity. They also show good durability, reflected by the retention of their initial activity during the dehydrogenation reaction of FA even after five cycles. Their initial TOF is 419 h-1 at 60 °C in water solution, much higher than those of the most Pd-based catalysts with a support. Moreover, they can efficiently reduce nitrates to alleviate nitrate pollution in water (conversion yield >99%). This strategy opens up a new green synthetic technique to design support-free heterogeneous catalysts with high-density defects as catalytic hot spots for efficient dehydrogenation catalysis of FA to meet the requirement of fuel cell applications and catalytic reduction of nitrates in water polluted with nitrates.
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Affiliation(s)
- Hu Liu
- MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage, School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin, Heilongjiang 150001, China.
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43
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Lu G, Yuan H, Su L, Kenens B, Fujita Y, Chamtouri M, Pszona M, Fron E, Waluk J, Hofkens J, Uji-I H. Plasmon-Mediated Surface Engineering of Silver Nanowires for Surface-Enhanced Raman Scattering. J Phys Chem Lett 2017; 8:2774-2779. [PMID: 28585825 DOI: 10.1021/acs.jpclett.7b00958] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
We reveal nanoscale morphological changes on the surface of a silver nanowire (AgNW) in the conventional surface-enhanced Raman scattering (SERS) measurement condition. The surface morphology changes are due to the surface plasmon-mediated photochemical etching of silver in the presence of certain Raman probes, resulting in a dramatic increase of Raman scattering intensity. This observation indicates that the measured SERS enhancement does not always originate from the as-designed/fabricated structures themselves, but sometimes with contribution from the morphological changes by plasmon-mediated photochemical reactions. Our work provides a guideline for more reliable SERS measurements and demonstrates a novel method for simple and site-specific engineering of SERS substrate and AgNW probes for designing and fabricating new SERS systems, stable and efficient TERS mapping, and single-cell SERS endoscopy.
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Affiliation(s)
- Gang Lu
- Nanjing Tech University , Institute of Advanced Materials & Key Laboratory of Flexible Electronics (KLOFE), Jiangsu National Synergistic Innovation Center for Advanced Materials (SICAM), 30 South Puzhu Road, Nanjing 211816, Jiangsu, People's Republic of China
- Departement Chemie, KU Leuven , Celestijnenlaan 200F, 3001 Heverlee, Belgium
| | - Haifeng Yuan
- Departement Chemie, KU Leuven , Celestijnenlaan 200F, 3001 Heverlee, Belgium
| | - Liang Su
- Departement Chemie, KU Leuven , Celestijnenlaan 200F, 3001 Heverlee, Belgium
| | - Bart Kenens
- Departement Chemie, KU Leuven , Celestijnenlaan 200F, 3001 Heverlee, Belgium
| | - Yasuhiko Fujita
- Departement Chemie, KU Leuven , Celestijnenlaan 200F, 3001 Heverlee, Belgium
| | - Maha Chamtouri
- Departement Chemie, KU Leuven , Celestijnenlaan 200F, 3001 Heverlee, Belgium
| | - Maria Pszona
- Institute of Physical Chemistry, Polish Academy of Sciences , Kasprzaka 44, 01-224 Warsaw, Poland
| | - Eduard Fron
- Departement Chemie, KU Leuven , Celestijnenlaan 200F, 3001 Heverlee, Belgium
| | - Jacek Waluk
- Institute of Physical Chemistry, Polish Academy of Sciences , Kasprzaka 44, 01-224 Warsaw, Poland
| | - Johan Hofkens
- Departement Chemie, KU Leuven , Celestijnenlaan 200F, 3001 Heverlee, Belgium
- Research Institute for Electronic Science (RIES), Hokkaido University , N20W10, Sapporo City 001-0020, Japan
| | - Hiroshi Uji-I
- Departement Chemie, KU Leuven , Celestijnenlaan 200F, 3001 Heverlee, Belgium
- Research Institute for Electronic Science (RIES), Hokkaido University , N20W10, Sapporo City 001-0020, Japan
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44
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Bactericidal effect of graphene oxide/Cu/Ag nanoderivatives against Escherichia coli , Pseudomonas aeruginosa , Klebsiella pneumoniae , Staphylococcus aureus and Methicillin-resistant Staphylococcus aureus. Int J Pharm 2016; 511:90-97. [DOI: 10.1016/j.ijpharm.2016.06.121] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2016] [Revised: 06/23/2016] [Accepted: 06/26/2016] [Indexed: 11/20/2022]
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45
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Fichthorn KA, Balankura T, Qi X. Multi-scale theory and simulation of shape-selective nanocrystal growth. CrystEngComm 2016. [DOI: 10.1039/c6ce01012a] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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46
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Qi X, Balankura T, Zhou Y, Fichthorn KA. How Structure-Directing Agents Control Nanocrystal Shape: Polyvinylpyrrolidone-Mediated Growth of Ag Nanocubes. NANO LETTERS 2015; 15:7711-7717. [PMID: 26509492 DOI: 10.1021/acs.nanolett.5b04204] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
The importance of structure-directing agents (SDAs) in the shape-selective synthesis of colloidal nanostructures has been well documented. However, the mechanisms by which SDAs actuate shape control are poorly understood. In the polyvinylpyrrolidone (PVP)-mediated growth of {100}-faceted Ag nanocrystals, this capability has been attributed to preferential binding of PVP to Ag(100). We use molecular dynamics simulations to probe the mechanisms by which Ag atoms add to Ag(100) and Ag(111) in ethylene glycol solution with PVP. We find that PVP induces kinetic Ag nanocrystal shapes by regulating the relative Ag fluxes to these facets. Stronger PVP binding to Ag(100) leads to a larger Ag flux to Ag(111) and cubic nanostructures through two mechanisms: enhanced Ag trapping by more extended PVP films on Ag(111) and a reduced free-energy barrier for Ag to cross lower-density films on Ag(111). These flux-regulating capabilities depend on PVP concentration and chain length, consistent with experiment.
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Affiliation(s)
- Xin Qi
- Department of Chemical Engineering and ‡Department of Physics, The Pennsylvania State University , University Park, Pennsylvania 16802, United States
| | - Tonnam Balankura
- Department of Chemical Engineering and ‡Department of Physics, The Pennsylvania State University , University Park, Pennsylvania 16802, United States
| | - Ya Zhou
- Department of Chemical Engineering and ‡Department of Physics, The Pennsylvania State University , University Park, Pennsylvania 16802, United States
| | - Kristen A Fichthorn
- Department of Chemical Engineering and ‡Department of Physics, The Pennsylvania State University , University Park, Pennsylvania 16802, United States
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47
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Lagrange M, Langley DP, Giusti G, Jiménez C, Bréchet Y, Bellet D. Optimization of silver nanowire-based transparent electrodes: effects of density, size and thermal annealing. NANOSCALE 2015; 7:17410-23. [PMID: 26437607 DOI: 10.1039/c5nr04084a] [Citation(s) in RCA: 91] [Impact Index Per Article: 10.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
Silver nanowire (AgNW) networks are efficient as flexible transparent electrodes, and are cheaper to fabricate than ITO (Indium Tin Oxide). Hence they are a serious competitor as an alternative to ITO in many applications such as solar cells, OLEDs, transparent heaters. Electrical and optical properties of AgNW networks deposited on glass are investigated in this study and an efficient method to optimize them is proposed. This paper relates network density, nanowire dimensions and thermal annealing directly to the physical properties of the nanowire networksusing original physical models. A fair agreement is found between experimental data and the proposed models. Moreover thermal stability of the nanowires is a key issue in thermal optimization of such networks and needs to be studied. In this work the impact of these four parameters on the networks physical properties are thoroughly investigated via in situ measurements and modelling, such a method being also applicable to other metallic nanowire networks. We demonstrate that this approach enables the optimization of both optical and electrical properties through modification of the junction resistance by thermal annealing, and a suitable choice of nanowire dimensions and network density. This work reports excellent optical and electrical properties of electrodes fabricated from AgNW networks with a transmittance T = 89.2% (at 550 nm) and a sheet resistance of Rs = 2.9 Ω □(-1), leading to the highest reported figure of merit.
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Affiliation(s)
- M Lagrange
- Univ. Grenoble Alpes, LMGP, F-38000 Grenoble, France.
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48
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Seed-free synthesis of 1D silver nanowires ink using clove oil (Syzygium Aromaticum) at room temperature. J Colloid Interface Sci 2015. [DOI: 10.1016/j.jcis.2015.07.045] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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49
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Liang Z, Graham KR. Surface Modification of Silver Nanowires for Morphology and Processing Control in Composite Transparent Electrodes. ACS APPLIED MATERIALS & INTERFACES 2015; 7:21652-21656. [PMID: 26389535 DOI: 10.1021/acsami.5b06489] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Silver nanowires are attractive components for a number of materials and applications, including silver nanowire (AgNW)-polymer composites, electrically conductive coatings, and transparent electrodes. In this manuscript, the ability of thiols with hydrophobic to ionic end groups to bind to AgNW surfaces is investigated, followed by how the polarity of the surface modifying thiol influences the morphological and electrical properties of both AgNW/PEDOT:PSS blend films and pure AgNW networks. Utilizing surface modification of AgNWs with sodium 3-mercapto-1-propanesulfonate (MPS), morphologically homogeneous AgNW/PEDOT:PSS thin films with an order of magnitude lower sheet resistance at similar transmittance values than unmodified AgNWs are obtained with a one-step processing method. Brief optimization of MPS-AgNW/PEDOT:PSS blends yields a sheet resistance of 22.6 Ω/□ at 81.4% transmittance.
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Affiliation(s)
- Zhiming Liang
- Department of Chemistry, University of Kentucky , Lexington, Kentucky 40506, United States
| | - Kenneth R Graham
- Department of Chemistry, University of Kentucky , Lexington, Kentucky 40506, United States
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Cho EH, Hwang J, Kim J, Lee J, Kwak C, Lee CS. Low-visibility patterning of transparent conductive silver-nanowire films. OPTICS EXPRESS 2015; 23:26095-26103. [PMID: 26480124 DOI: 10.1364/oe.23.026095] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
A partial etching mechanism is proposed to meet the requirement for low-visibility patterning of silver nanowire (AgNW)-based transparent conductive electrodes (TCEs) by reducing the difference in optical properties between conductive and nonconductive regions of the pattern. Using the finite difference time domain (FDTD) method, etched geometries that provide the smallest difference in transmittance after etching are theoretically determined. A sodium hypochlorite-based etchant capable that allows the etched geometry to be varied by controlling the pH is used to create a low-visibility pattern with a transmittance and haze difference of 0.07 and 0.04%, respectively. To the best of our knowledge, this is the first time that a partial etching mechanism such as this has been studied in relation to AgNW-based TCEs.
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