Dual-mode waveguiding of Raman and luminescence signals in a crystalline organic microplate

Seong Gi Jo, Dong Hyuk Park, Bong Gi Kim, Sungbaek Seo, Suk Joong Lee, Jeongyong Kim, Jinsang Kim, Jinsoo Joo

Research output: Contribution to journalArticle

14 Citations (Scopus)

Abstract

We demonstrate dual-mode waveguiding of Raman and luminescence signals using π-conjugated organic 1,4-bis(3,5-bis(trifluoromethyl) cyanostyryl)-2,5-dibromobenzene (CN-TSDB) microplates with single-crystal structure. The output Raman and photoluminescence (PL) spectra through the CN-TSDB microplates were recorded as a function of propagation distance using a high-resolution laser confocal microscope (LCM). Under 633 nm Raman excitation, which is outside the optical absorption of the microplates, the characteristic Raman modes of C-Br, -CF3, and -CC- aromatic stretching were clearly observed at the output points. The decay characteristics of the LCM Raman intensities were comparable to those of LCM PL intensities. The intermolecular π-π interaction of CN-TSDB has been enhanced by the attractive interaction between the CN group and Br atoms, which induces efficient polariton propagation and plays an important role in dual-mode waveguiding. This journal is

Original languageEnglish
Pages (from-to)6077-6083
Number of pages7
JournalJournal of Materials Chemistry C
Volume2
Issue number30
DOIs
Publication statusPublished - 2014 Aug 14

ASJC Scopus subject areas

  • Chemistry(all)
  • Materials Chemistry

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