Hyperbranched Polycoumarates with Photofunctional Multiple Shape Memory | Zendy

Wang SiQian | Zendy; Kaneko Daisaku | Zendy; Okajima Maiko | Zendy; Yasaki Katsuaki | Zendy; Tateyama Seiji | Zendy; Kaneko Tatsuo | Zendy

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Hyperbranched Polycoumarates with Photofunctional Multiple Shape Memory

Author(s) -

Wang SiQian,

Kaneko Daisaku,

Okajima Maiko,

Yasaki Katsuaki,

Tateyama Seiji,

Kaneko Tatsuo

Publication year - 2013

Publication title -

angewandte chemie international edition

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 5.831

H-Index - 550

eISSN - 1521-3773

pISSN - 1433-7851

DOI - 10.1002/anie.201305647

Subject(s) - cycloaddition , elastomer , shape memory alloy , materials science , glass transition , shape memory polymer , composite material , irradiation , shape change , chemical engineering , polymer , chemistry , organic chemistry , physics , biophysics , nuclear physics , engineering , biology , catalysis

In good shape : The films of hyperbranched polycoumarate derivatives can undergo a reversible [2+2] cycloaddition under irradiation of UV light and behave like photomechanical elastomers. From a predetermined original shape A the photonically and thermally memorized shapes B and C were obtained. The original shape was recovered by photoirradiation (see picture; T g =glass transition temperature).

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