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Reversible changes in the orientation of gold nanorod arrays on polymer brushes

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Title: Reversible changes in the orientation of gold nanorod arrays on polymer brushes
Authors: Sekizawa, Yu Browse this author
Mitomo, Hideyuki Browse this author
Nihei, Mizuki Browse this author
Nakamura, Satoshi Browse this author
Yonamine, Yusuke Browse this author
Kuzuya, Akinori Browse this author
Wada, Takehiko Browse this author
Ijiro, Kuniharu Browse this author →KAKEN DB
Issue Date: 1-Sep-2020
Publisher: Royal Society of Chemistry
Journal Title: Nanoscale advances
Volume: 2
Issue: 9
Start Page: 3798
End Page: 3803
Publisher DOI: 10.1039/d0na00315h
Abstract: Nanoparticles exhibit a number of unique properties such as localized surface plasmon resonance (LSPR). As this LSPR is sensitive to geometrical or spatial conditions, the arrangement of nanoparticles, in particular the active arrangement of plasmonic structures, is an important issue. In this study, gold nanorod (GNR) arrays were prepared by GNR attachment on anionic polymer (DNA) brushes via electrostatic interactions and their stimuli-responsive changes in orientationwere investigated. As a result, the orientation of GNR arrays on DNA brushes reversibly changed by the modulation of electrostatic interactions between GNRs and polymers via changes in the solution pH. As these extensive GNR arrays are prepared via easy bottom-up processes, GNR surface properties are easily tuned by simple modification, and DNAs could be replaced with various synthetic polymers, we believe that this study will lead to the development of nextgeneration materials and devices with actively tunable structures.
Type: article
Appears in Collections:電子科学研究所 (Research Institute for Electronic Science) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

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