Hyperbranched polycoumarates with photofunctional multiple shape memory

Si-Qian Wang; Daisaku Kaneko; Maiko Okajima; Katsuaki Yasaki; Seiji Tateyama; Tatsuo Kaneko

doi:10.1002/anie.201305647

Hyperbranched polycoumarates with photofunctional multiple shape memory

Angew Chem Int Ed Engl. 2013 Oct 11;52(42):11143-8. doi: 10.1002/anie.201305647. Epub 2013 Sep 5.

Authors

Si-Qian Wang¹, Daisaku Kaneko, Maiko Okajima, Katsuaki Yasaki, Seiji Tateyama, Tatsuo Kaneko

Affiliation

¹ School of Materials Science, Advanced Institute of Science and Technology, 1-1Asahidai, Nomi, Ishikawa 923-1292 (Japan).

PMID: 24038918
DOI: 10.1002/anie.201305647

Abstract

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; Tg =glass transition temperature).

Keywords: coumarates; photochemistry; polymers; smart materials.

Publication types

Research Support, Non-U.S. Gov't

MeSH terms

Computer-Aided Design
Coumaric Acids / chemical synthesis
Coumaric Acids / chemistry*
Photochemical Processes
Polymers / chemical synthesis
Polymers / chemistry*

Substances

Coumaric Acids
Polymers