COMPETITION OF SELF-ORGANIZATION AND PHOTOORIENTATION IN LIQUID-CRYSTALLINE POLYMERS

Authors
FISCHER T LASKER L RUTLOH M CZAPLA S STUMPE J
Citation
T. Fischer et al., COMPETITION OF SELF-ORGANIZATION AND PHOTOORIENTATION IN LIQUID-CRYSTALLINE POLYMERS, Molecular crystals and liquid crystals science and technology. Section A, Molecular crystals and liquid crystals, 299, 1997, pp. 293-299
Citations number
6
Categorie Soggetti
Crystallography
Journal title
Molecular crystals and liquid crystals science and technology. Section A, Molecular crystals and liquid crystals → ACNP
ISSN journal
1058725X
Volume
299
Year of publication
1997
Pages
293 - 299
Database
ISI
SICI code
1058-725X(1997)299:<293:COSAPI>2.0.ZU;2-G
Abstract
Photoreorientation processes in photochromic LCP's are dependent on th e supramolecular order. The efficiency is much higher in films of low order, which have been obtained by a suitable preparation or by an int ermediate photochemical decoupling. On the other hand, a photochemical ly induced order in an initially isotropic film acts as initializing f orce, governing the direction of thermotropic self-organization. The c ombination of both ordering principles causes a significant amplificat ion of the light-induced optical anisotropy.