SYNTHESIS OF NOVEL LIQUID-CRYSTALLINE ORGANOMETALLIC POLYMERS

Authors
Citation
Uhf. Bunz, SYNTHESIS OF NOVEL LIQUID-CRYSTALLINE ORGANOMETALLIC POLYMERS, Pure and applied chemistry, 68(2), 1996, pp. 309-312
Citations number
25
Categorie Soggetti
Chemistry
Journal title
ISSN journal
00334545
Volume
68
Issue
2
Year of publication
1996
Pages
309 - 312
Database
ISI
SICI code
0033-4545(1996)68:2<309:SONLOP>2.0.ZU;2-9
Abstract
The synthesis and some properties of organometallic homo- and copolyme rs carrying diethynylated pi-complexes are discussed. As monomers the diethynylated derivatives of cymantrene and adienyl(1,3-bistrimethylsi lylcyclobutadiene)cobalt were utilized. Novel thermotropic nematic and lyotropic smectic liquid crystalline polymers were synthesized as cop olymers of 1 and 2,5-dihexyl-1,4-diiodobenzene or 3-hexyl-2,5-diiodoth iophene in a Cassar-Heck-Hagihara coupling reaction. The liquid crysta lline behavior was secured by polarizing microscopy and powder X-ray d iffractometry.