Preparation of diarylethene copolymers and their photoinduced refractive index change

S. Y. Cho, M. Yoo, H. W. Shin, K. H. Ahn, Y. R. Kim, E. Kim

Research output: Contribution to journalArticle

32 Citations (Scopus)

Abstract

Diarylethene copolymers were synthesized from 1-(6′-vinyl-2′-methylbenzo[b]thiophene-3′-yl)-2-(2′ ′-methylbenzo [b]thiophene-3′′-yl)hexafluorocyclopentene (VMBTF6) and 1-[6′-(4′′′-vinylbenzoyl)-2′-methylbenz o[b]thiophene-3′-yl]-2-(2′′-methylbenzo[b]thiophene -3′′-yl)hexafluorocyclopentene (VBMBTF6) via living free radical techniques using stable TEMPO derivatives. The diarylethene content was controlled by the feed ratio of diarylethene derivatives and styrene. Transparent photochromic polymer films were prepared from the diarylethene copolymers with narrow molecular weight dispersion (PD1.3) by spin coating method. Photoinduced refractive index changes (ΔnTE) of the polymer films, with 25 mol% of diaryethene content, accompanied by the photochromic change were determined as 0.0009 and 0.0030 for poly(styrene-ran -VMBTF6) and poly(styrene-ran-VBMBTF6), respectively.

Original languageEnglish
Pages (from-to)279-284
Number of pages6
JournalOptical Materials
Volume21
Issue number1-3
DOIs
Publication statusPublished - 2003 Jan

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Computer Science(all)
  • Atomic and Molecular Physics, and Optics
  • Spectroscopy
  • Physical and Theoretical Chemistry
  • Organic Chemistry
  • Inorganic Chemistry
  • Electrical and Electronic Engineering

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