Photoplasticization effect of an azobenzene-doped liquid crystal depending on phase structures

Takahiro Yamamoto, Rikuo Hasegawa, Yuki Kawata, Hideyuki Kihara, Naofumi Naga

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

A photoresponsive plasticizer for a photo-inactive polymer was developed using an azobenzene-doped liquid crystal (LC). The azo-doped LC was miscible with poly(methyl methacrylate) up to a critical concentration, above which it phase-separated from the polymer. A photoinduced decrease in the glass transition temperature (Tg) of the polymer was accomplished by photochemically changing the phase structures of the phase-separated LC; the large decrease in Tg (ΔTg = -23 °C) was obtained with the addition of 70 wt % azo-doped LC.

Original languageEnglish
Pages (from-to)272-275
Number of pages4
JournalChemistry Letters
Volume47
Issue number3
DOIs
Publication statusPublished - 2018 Jan 1

Keywords

  • Photochemical phase transition
  • Photoisomerization
  • Photosoftening

ASJC Scopus subject areas

  • Chemistry(all)

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