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

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

doi:10.1246/cl.171072

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 journal › Article › peer-review

5 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 (T_g) of the polymer was accomplished by photochemically changing the phase structures of the phase-separated LC; the large decrease in T_g (ΔT_g = -23 °C) was obtained with the addition of 70 wt % azo-doped LC.

Original language	English
Pages (from-to)	272-275
Number of pages	4
Journal	Chemistry Letters
Volume	47
Issue number	3
DOIs	https://doi.org/10.1246/cl.171072
Publication status	Published - 2018

Keywords

Photochemical phase transition
Photoisomerization
Photosoftening

ASJC Scopus subject areas

Chemistry(all)

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10.1246/cl.171072

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title = "Photoplasticization effect of an azobenzene-doped liquid crystal depending on phase structures",

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.",

keywords = "Photochemical phase transition, Photoisomerization, Photosoftening",

author = "Takahiro Yamamoto and Rikuo Hasegawa and Yuki Kawata and Hideyuki Kihara and Naofumi Naga",

note = "Funding Information: This study was financially supported by JSPS KAKENHI Grant Numbers 25410217 and 16H04208. Publisher Copyright: {\textcopyright} 2018 The Chemical Society of Japan.",

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pages = "272--275",

journal = "Chemistry Letters",

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T1 - Photoplasticization effect of an azobenzene-doped liquid crystal depending on phase structures

AU - Yamamoto, Takahiro

AU - Hasegawa, Rikuo

AU - Kawata, Yuki

AU - Kihara, Hideyuki

AU - Naga, Naofumi

PY - 2018

Y1 - 2018

N2 - 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.

AB - 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.

KW - Photochemical phase transition

KW - Photoisomerization

KW - Photosoftening

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JO - Chemistry Letters

JF - Chemistry Letters

IS - 3

ER -

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

Abstract

Keywords

ASJC Scopus subject areas

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