Preparation of amphotropic liquid crystalline poly(alkoxycarbonylphenylene)s

Authors
Kaeriyama, K Kouyama, S Sekita, M Nakayama, T Tsukahara, Y
Citation
K. Kaeriyama et al., Preparation of amphotropic liquid crystalline poly(alkoxycarbonylphenylene)s, MACRO RAPID, 20(2), 1999, pp. 50-54
Citations number
18
Categorie Soggetti
Organic Chemistry/Polymer Science
Journal title
MACROMOLECULAR RAPID COMMUNICATIONS
ISSN journal
10221336 → ACNP
Volume
20
Issue
2
Year of publication
1999
Pages
50 - 54
Database
ISI
SICI code
1022-1336(199902)20:2<50:POALCP>2.0.ZU;2-O
Abstract
Poly(alkoxycarbonylphenylene)s with long alkoxy groups were prepared by deh alogenative polycondensation of alkyl dichlorobenzoates with nickel bromide /zinc/triphenylphosphine catalyst. The poly(alkoxycarbonyl-p-phenylene)s an d poly(alkyloxycarbonyl-m-phenylene)s are liquid crystalline, although the latter are composed wholly of kinked repeating units. While poly(hexyloxyca rbonylphenylene)s exhibit only thermotropic liquid crystalline behavior, po ly(dodecyloxycarbonylphenylene)s and poly(hexadecyloxycarbonylphenylene)s s how amphotropism.