Waveguiding characteristics of surface enhanced Raman scattering signals along crystalline organic semiconducting microrod

Seong Gi Jo, Bong Gi Kim, Jinsang Kim, Jeong Yong Kim, Jinsoo Joo

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

The waveguiding of surface enhanced Raman scattering (SERS) signals was demonstrated by using organic semiconducting microrods (MRs) hybridized with functionalized gold nanoparticles (Au-NPs). Organic semiconducting 1,4-bis(3,5-bis(trifluoromethyl) styryl)-2,5-dibromobenzene (TSDB) crystalline MRs were fabricated as active optical waveguiding system using a self-assembly method. The static SERS effect and the enhancement of photoluminescence were simultaneously observed for the TSDB MRs hybridized with Au-NPs. The waveguiding characteristics of the SERS signals through the hybrid MR of TSDB/Au-NPs were investigated using a high-resolution laser confocal microscope (LCM) system. The enhanced output Raman characteristic modes of TSDB molecules were clearly observed along the hybrid MR of TSDB/Au-NPs, which is attributed to stronger scattering of the light and the increased coupling efficiency of waveguiding due to the presence of Au-NPs. The waveguiding of the SERS signals exhibited different decay constants for the corresponding characteristic Raman modes, such as -C = C- aromatic, -CF3, and C-Br stretching modes. The observed waveguiding characteristics of various SERS modes enable multi-modal waveguiding with relatively narrow spectral resolution for nanophotonic information.

Original languageEnglish
Pages (from-to)6215-6226
Number of pages12
JournalOptics Express
Volume25
Issue number6
DOIs
Publication statusPublished - 2017 Mar 20

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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