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

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Liquid Crystals
Phase structure
Polymers
Plasticizers
Polymethyl Methacrylate
azobenzene

Keywords

  • Photochemical phase transition
  • Photoisomerization
  • Photosoftening

ASJC Scopus subject areas

  • Chemistry(all)

Cite this

Photoplasticization effect of an azobenzene-doped liquid crystal depending on phase structures. / Yamamoto, Takahiro; Hasegawa, Rikuo; Kawata, Yuki; Kihara, Hideyuki; Naga, Naofumi.

In: Chemistry Letters, Vol. 47, No. 3, 01.01.2018, p. 272-275.

Research output: Contribution to journalArticle

Yamamoto, Takahiro ; Hasegawa, Rikuo ; Kawata, Yuki ; Kihara, Hideyuki ; Naga, Naofumi. / Photoplasticization effect of an azobenzene-doped liquid crystal depending on phase structures. In: Chemistry Letters. 2018 ; Vol. 47, No. 3. pp. 272-275.
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