Light induced colour change of cholesteric copolymers

Authors
Brehmer, M Lub, J Van Dewitte, P
Citation
M. Brehmer et al., Light induced colour change of cholesteric copolymers, MOL CRYST A, 331, 1999, pp. 2193-2200
Citations number
12
Categorie Soggetti
Physical Chemistry/Chemical Physics
Journal title
MOLECULAR CRYSTALS AND LIQUID CRYSTALS SCIENCE AND TECHNOLOGY SECTION A-MOLECULAR CRYSTALS AND LIQUID CRYSTALS
ISSN journal
1058725X → ACNP
Volume
331
Year of publication
1999
Part
4
Pages
2193 - 2200
Database
ISI
SICI code
1058-725X(1999)331:<2193:LICCOC>2.0.ZU;2-B
Abstract
We demonstrate an easy method for the colour patterning of cholesteric liqu id crystalline copolymers based on photoisomerization of a chiral comonomer . The UV dose determines the reflection colour. If two chiral compounds wit h opposite twist sense are copolymerized, an inversion of helical twisting sense can be observed during photoisomerization.