Interaction potential surface between Raman scattering enhancing nanoparticles conjugated with a functional copolymer

Takeshi Morita; Yuki Ogawa; Hiroshi Imamura; Kouki Ookubo; Nobuo Uehara; Tomonari Sumi

doi:10.1039/C9CP01946D

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Interaction potential surface between Raman scattering enhancing nanoparticles conjugated with a functional copolymer†

Takeshi Morita,

*^a Yuki Ogawa,^a Hiroshi Imamura,

^b Kouki Ookubo,^c Nobuo Uehara^c and Tomonari Sumi

Author affiliations

* Corresponding authors

^a Department of Chemistry, Graduate School of Science, Chiba University, Chiba 263-8522, Japan
E-mail: moritat@faculty.chiba-u.jp

^b Department of Applied Chemistry, College of Life Sciences, Ritsumeikan University, Shiga 525-8577, Japan

^c Department of Material and Environmental Chemistry, Graduate School of Engineering, Utsunomiya University, Tochigi 321-8585, Japan

^d Research Institute for Interdisciplinary Science, Okayama University, Okayama 700-8530, Japan

Abstract

A novel Raman scattering enhancement was discovered using colloid nanoparticles conjugated with an amine-based copolymer. The interaction potential surface between Raman scattering enhancing nanoparticles was clarified by combining a small-angle scattering method and a model-potential-free liquid-state theory as an in situ observation in the solution state. The potential surface indicates that the most stable position is located around 0.9 nm from the particle surface, suggesting the existence of a nanogap structure between the nanocomposites. The change in Raman scattering enhancement was also acquired during the dispersion process of the aggregated nanocomposites through a glutathione-triggered nanosensing reaction.

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Article information

DOI: https://doi.org/10.1039/C9CP01946D
Article type: Paper
Submitted: 10 Apr 2019
Accepted: 23 Apr 2019
First published: 15 May 2019

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Phys. Chem. Chem. Phys., 2019,21, 16889-16894

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Interaction potential surface between Raman scattering enhancing nanoparticles conjugated with a functional copolymer

T. Morita, Y. Ogawa, H. Imamura, K. Ookubo, N. Uehara and T. Sumi, Phys. Chem. Chem. Phys., 2019, 21, 16889 DOI: 10.1039/C9CP01946D

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Physical Chemistry Chemical Physics

Interaction potential surface between Raman scattering enhancing nanoparticles conjugated with a functional copolymer†

Abstract

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Interaction potential surface between Raman scattering enhancing nanoparticles conjugated with a functional copolymer

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