Metallorganic side group liquid crystalline polymers containing pi-allylpalladium(II) groups
作者:
M. GHEDINI,
B. PANUNZI,
A. ROVIELLO,
期刊:
Liquid Crystals
(Taylor Available online 1998)
卷期:
Volume 25,
issue 2
页码: 225-233
ISSN:0267-8292
年代: 1998
DOI:10.1080/026782998206371
出版商: Taylor & Francis Group
数据来源: Taylor
摘要:
The preparation and phase properties of some LC pi-allyl and pi-crotyl Pd(II) side group metallorganic polymers and some related salicylaldiminates are described. The LC acrylate functionalized monomers are easily prepared, but their use to obtain the corresponding polymers by radical reaction failed because extensive decomposition of the complexes occurs with the formation of Pd metal. The synthesis of the metallated polymers was therefore performed by reacting the dimeric chloro-bridged organometallic pi-allyl or pi-crotyl Pd(II) complexes with the appropriate ligand polymer which is prepared without difficulties. The organometallic polymers show a nematic mesophase, while the ligand polymer exhibits a smectic A or C phase. Both metallated low molecular mass model compounds and the polymers give stable mesophases, although at lower temperatures compared with the parent ligand compounds.
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