PH-Triggered SERS via modulated plasmonic coupling in individual bimetallic nanocobs

Maneesh K. Gupta, Sehoon Chang, Srikanth Singamaneni, Lawrence F. Drummy, Ray Gunawidjaja, Rajesh R. Naik, Vladimir V. Tsukruk

Research output: Contribution to journalArticlepeer-review

40 Scopus citations

Abstract

Silver nanowires functionalized with gold nanoparticles using a polyacrylic acid linker exhibit pH-modulated optical properties, including a shift in localized surface plasmon resonance, and triggered surface-enhanced Raman scattering (SERS) effects. The tunable optical properties are exhibited as a result of changes in particle coupling caused by the swelling response of polyacrylic acid.

Original languageEnglish
Pages (from-to)1192-1198
Number of pages7
JournalSmall
Volume7
Issue number9
DOIs
StatePublished - May 9 2011

Keywords

  • Raman spectroscopy
  • gold nanoparticles
  • optical properties
  • silver nanowires

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