Thermotropic photochromic polypeptides: Polyornithine and polylysine bearing azobenzene units in the side chains

Authors
Gallot, B Guillermain, C Fissi, A Pieroni, O
Citation
B. Gallot et al., Thermotropic photochromic polypeptides: Polyornithine and polylysine bearing azobenzene units in the side chains, MOL CRYST A, 330, 1999, pp. 1309-1317
Citations number
15
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
330
Year of publication
1999
Part
3
Pages
1309 - 1317
Database
ISI
SICI code
1058-725X(1999)330:<1309:TPPPAP>2.0.ZU;2-2
Abstract
The structure of poly(L-ornithine)s and poly(L-lysine)s containing between 19% and 100% of azobenzene units in the side chains has been studied, by X- ray diffraction, between room temperature and 250 degrees C. Polymers were found to exhibit mesomorphic structures of the smectic A type deriving from the beta-structure of polypeptides. The influence of the nature of the ami no acid is discussed.