Effect of photocrosslinking on photochromism of chalcone-based polymeric materials bearing spiropyran dye

Jae Hong Kim, Si Young Ban, Qing Zhang Zhang, Go Woon Kim, Min Ju Cho, Dong Hoon Choi

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

The epoxy oligomer was prepared to contain spiropyran in the side chain successfully. The rate of ring closure reaction of photochromic dye tethered in the side chain of the epoxy oligomer was controlled by virtue of [2p + 2p] photocycloaddition between the double bonds in the chalcone units and photopolymerization of epoxy group placed in the chain ends, which is expected to control the free volume surrounding photochromic moiety. The kinetic measurement was conducted to prove the improved photostability of the merocyanine chromophore that is colored species of spiropyran. In short, the cationic photopolymerization and photocrosslinking reaction were accompanied under illumination of the identical wavelength UV light.

Original languageEnglish
Pages (from-to)307/[597]-314/[604]
JournalMolecular Crystals and Liquid Crystals
Volume445
DOIs
Publication statusPublished - 2006

Keywords

  • Cationic photopolymerization
  • Chalcone
  • Interpenetrating network
  • Photochromic behavior
  • Photocrosslink
  • Spiropyran

ASJC Scopus subject areas

  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics

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