Optical sensing of chiral polymer thin films

Geon Joon Lee, Min Ju Cho, Eun Ha Choi, Dong Hoon Choi

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

The chiroptical properties of polyfluorene–phenylene (PFPh) thin films were studied using circular dichroism (CD), surface-enhanced Raman scattering (SERS), attenuated total reflection (ATR), and spectroscopic ellipsometry. The pristine PFPh films exhibited significant CD at room temperature, and the chirality increased by thermal annealing at 120 ?. SERS and ATR spectra indicated that the chirality enhancement was due to the self-organization and/or rearrangement of the polymer backbones by thermal annealing. Optical sensing of the chiral polymers was demonstrated using SERS spectra of the chiral polymer films on gold. Optical sensing properties of the chiral PFPh films were compared with those of the achiral polyfluorene films.

Original languageEnglish
Title of host publicationComputational Optical Sensing and Imaging, COSI 2020
PublisherThe Optical Society
ISBN (Electronic)9781557528209
Publication statusPublished - 2020
EventComputational Optical Sensing and Imaging, COSI 2020 - Part of Imaging and Applied Optics Congress 2020 - Virtual, Online, United States
Duration: 2020 Jun 222020 Jun 26

Publication series

NameOptics InfoBase Conference Papers

Conference

ConferenceComputational Optical Sensing and Imaging, COSI 2020 - Part of Imaging and Applied Optics Congress 2020
Country/TerritoryUnited States
CityVirtual, Online
Period20/6/2220/6/26

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Mechanics of Materials

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