<▼1><P>Particle-on-film plasmonic systems provide interesting plasmonic properties, which can be easily tuned by controlling the particle–film gaps.</P></▼1><▼2><P>Particle-on-film plasmonic systems pro...
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https://www.riss.kr/link?id=A107555498
2015
-
SCOPUS,SCIE
학술저널
11730-11735(6쪽)
0
상세조회0
다운로드다국어 초록 (Multilingual Abstract)
<▼1><P>Particle-on-film plasmonic systems provide interesting plasmonic properties, which can be easily tuned by controlling the particle–film gaps.</P></▼1><▼2><P>Particle-on-film plasmonic systems pro...
<▼1><P>Particle-on-film plasmonic systems provide interesting plasmonic properties, which can be easily tuned by controlling the particle–film gaps.</P></▼1><▼2><P>Particle-on-film plasmonic systems provide interesting plasmonic properties, which can be easily tuned by controlling the particle–film gaps. However, there has been no study on the active control of gap distances and the resulting plasmonic properties in response to the external stimuli. In this study, we introduce a particle–film plasmonic system with the ability of active control of particle–film gap distances and thus the plasmonic properties based on pH-responsive block copolymer micelle–metal monolayer arrays on metal films. We synthesize pH-sensitive polystyrene-<I>block</I>-poly(4-vinylpyridine) (PS-<I>b</I>-P4VP) spherical micelles that contain Ag nanoparticles in the micellar core. Then, we demonstrate that the pH-sensitive micelle monolayer films on Ag films modulate gap distances between the Ag nanoparticles (Ag NPs) within micelle cores and Ag films, leading to great changes in particle–film plasmon couplings (gap plasmons) that strongly influence the surface-enhanced Raman scattering (SERS) signal. The suggested plasmonic system with dynamic plasmonic properties will play a critical role in diverse applications such as chemical and biosensors, diagnostics, and smart optical devices.</P></▼2>
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