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Danno M, Yoshinari S, Igari S, Honda J, Eguchi T, Inoue W, Yasuhara K, Hara S, Ikake H, Shimizu S, Toyama T, Kusaka Y, Fukuda N, Ushijima H, Takase K, Sugawa K, Otsuki J. Hybrids of Two-dimensional Colloidal Crystals and Gold Nanoparticle Assemblies for Effective Surface-enhanced Raman Scattering with High Spatial Reproducibility. CHEM LETT 2018. [DOI: 10.1246/cl.171185] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Affiliation(s)
- Miu Danno
- College of Science and Technology, Nihon University, Chiyoda, Tokyo 101-8308, Japan
| | - Satoshi Yoshinari
- College of Science and Technology, Nihon University, Chiyoda, Tokyo 101-8308, Japan
| | - Shuto Igari
- College of Science and Technology, Nihon University, Chiyoda, Tokyo 101-8308, Japan
| | - Jotaro Honda
- College of Science and Technology, Nihon University, Chiyoda, Tokyo 101-8308, Japan
| | - Takumi Eguchi
- College of Science and Technology, Nihon University, Chiyoda, Tokyo 101-8308, Japan
| | - Wataru Inoue
- College of Science and Technology, Nihon University, Chiyoda, Tokyo 101-8308, Japan
| | - Keita Yasuhara
- College of Science and Technology, Nihon University, Chiyoda, Tokyo 101-8308, Japan
| | - Shuta Hara
- College of Science and Technology, Nihon University, Chiyoda, Tokyo 101-8308, Japan
| | - Hiroki Ikake
- College of Science and Technology, Nihon University, Chiyoda, Tokyo 101-8308, Japan
| | - Shigeru Shimizu
- College of Science and Technology, Nihon University, Chiyoda, Tokyo 101-8308, Japan
| | - Takeshi Toyama
- College of Science and Technology, Nihon University, Chiyoda, Tokyo 101-8308, Japan
| | - Yasuyuki Kusaka
- Flexible Electronics Research Center (FLEC), National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, Ibaraki 305-8565, Japan
| | - Nobuko Fukuda
- Flexible Electronics Research Center (FLEC), National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, Ibaraki 305-8565, Japan
| | - Hirobumi Ushijima
- Flexible Electronics Research Center (FLEC), National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, Ibaraki 305-8565, Japan
| | - Kouichi Takase
- College of Science and Technology, Nihon University, Chiyoda, Tokyo 101-8308, Japan
| | - Kosuke Sugawa
- College of Science and Technology, Nihon University, Chiyoda, Tokyo 101-8308, Japan
| | - Joe Otsuki
- College of Science and Technology, Nihon University, Chiyoda, Tokyo 101-8308, Japan
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Zhou X, Li X, Jiao L, Huo H, Li R. Programmed Synthesis Palladium Supported on Fe3O4@C: An Efficient and Heterogeneous Recyclable Catalyst for One-Pot Reductive Amination of Aldehydes with Nitroarenes in Aqueous Reaction Medium. Catal Letters 2015. [DOI: 10.1007/s10562-015-1552-1] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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3
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Bao H, Bihr T, Smith AS, Klupp Taylor RN. Facile colloidal coating of polystyrene nanospheres with tunable gold dendritic patches. NANOSCALE 2014; 6:3954-3966. [PMID: 24253323 DOI: 10.1039/c3nr04016j] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
Patchy particles comprise regions of differing material or chemical functionality on otherwise isotropic cores. To meet the great potential of these anisotropic structures in a wide range of application fields, completely new approaches are sought for the scalable and tunable production of patchy particles, particularly those with nanoscale dimensions. In this paper the synthesis of patchy particles via a simple colloidal route is investigated. Using surfactant-free cationic polystyrene nanospheres as core particles, gold patches are produced through the in situ reduction of chloroauric acid with ascorbic acid. The fact that such nanostructured metal patches can be heterogeneously nucleated on polymer nanospheres is related to the electrostatic interaction between core and metal precursor. Furthermore, the lateral expansion of the gold patches over the polystyrene surface is facilitated by an excess of ascorbic acid. The morphology of the patches is highly dendritic and process-induced variations in the structure are related to gold surface mobility using Monte Carlo simulations based on the diffusion limited aggregation principle. Considering the pH dependent behaviour of ascorbic acid it is possible to predict the moiety which most likely adsorbs to the polymer surface and promotes gold surface diffusion. This enables the judicious adjustment of the pH to also obtain non-dendritic patches. On account of the plasmonic behaviour of gold, the patchy particles have morphology-dependent optical properties. The systematic development of the synthetic approach described here is expected to lay a foundation for the development of functional materials based on the self- or directed-assembly of nanoscale building blocks with anisotropic interactions and properties.
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Affiliation(s)
- Huixin Bao
- Institute of Particle Technology, FAU Erlangen-Nürnberg, Cauerstr. 4, 91058 Erlangen, Germany.
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Li Y, Driver M, Winuprasith T, Zheng J, McClements DJ, He L. In situ SERS detection of emulsifiers at lipid interfaces using label-free amphiphilic gold nanoparticles. Analyst 2014; 139:5075-8. [DOI: 10.1039/c4an00869c] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We fabricated amphiphilic gold nanoparticles (GNPs) that can self-assemble at oil–water interfaces, and applied those GNPs for in situ SERS detection of interfacial emulsifiers.
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Affiliation(s)
- Yue Li
- Department of Food Science
- University of Massachusetts
- Amherst, USA
- Key Laboratory of Food Colloids and Biotechnology
- Ministry of Education
| | - Michael Driver
- Department of Food Science
- University of Massachusetts
- Amherst, USA
| | - Thunnalin Winuprasith
- Department of Food Science
- University of Massachusetts
- Amherst, USA
- Department of Biotechnology
- Faculty of Science
| | - Jinkai Zheng
- Department of Food Science
- University of Massachusetts
- Amherst, USA
- Institute of Agro-Products Processing Science and Technology
- Chinese Academy of Agricultural Sciences
| | | | - Lili He
- Department of Food Science
- University of Massachusetts
- Amherst, USA
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