BROWSE

Related Researcher

Author

Park, Soojin
Nano-Functional Materials Lab
Research Interests
  • Block Copolymers, nanostructured materials for Lithium-Ion batteries, wearable and stretchable energy storage applications

ITEM VIEW & DOWNLOAD

pH-tunable plasmonic properties of Ag nanoparticle cores in block copolymer micelle arrays on Ag films

Cited 0 times inthomson ciCited 0 times inthomson ci
Title
pH-tunable plasmonic properties of Ag nanoparticle cores in block copolymer micelle arrays on Ag films
Author
Lee, JiwonYoo, SeugminShin, MyoungsooChoe, AyoungPark, SoojinKo, Hyunhyub
Keywords
Block copolymers; Copolymers; Micelles; Monolayers; Nanoparticles; pH sensors; Plasmons; Raman scattering; Surface scattering; Synthesis (chemical) Block co-polymer micelles; Diverse applications; External stimulus; Plasmonic properties; Poly(4-vinyl pyridine); Polystyrene block; Spherical micelles; Surface enhanced Raman Scattering (SERS)
Issue Date
201506
Publisher
ROYAL SOC CHEMISTRY
Citation
JOURNAL OF MATERIALS CHEMISTRY A, v.3, no.22, pp.11730 - 11735
Abstract
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-block-poly(4-vinylpyridine) (PS-b-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
URI
Go to Link
DOI
http://dx.doi.org/10.1039/c5ta02085a
ISSN
2050-7488
Appears in Collections:
ECHE_Journal Papers

find_unist can give you direct access to the published full text of this article. (UNISTARs only)

Show full item record

qr_code

  • mendeley

    citeulike

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

MENU