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Reversible Thermochromism in Hydrogen‐Bonded Polymers Containing Polydiacetylenes
Author(s) -
Yuan Zhongzhe,
Lee ChanWoo,
Lee SuckHyun
Publication year - 2004
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.200453995
Subject(s) - diacetylene , polydiacetylenes , thermochromism , polymer , terephthalic acid , photopolymer , absorption (acoustics) , polymer chemistry , photochemistry , materials science , polymer science , chemistry , organic chemistry , polymerization , composite material , polyester
Out of the blue : A reversible temperature‐dependent change in the absorption characteristics of spin‐coated terephthalic acid/diacetylene polymers is observed. The polymer is prepared by topochemical photopolymerization of the diacetylene side chains of the stacked terephthalic acid units (see picture). The absorption bands of the polymeric product move reversibly from 640 nm (blue form of the polymer) to 580 nm (red form) during heating–cooling cycles.