Molecular properties of comb-shaped polymers with cyanobiphenyl mesogenic side groups

被引:0
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作者
Lavrenko, PN
Evlampieva, NP
Polushin, SG
Okatova, OV
Knochenhauer, G
Kalnin'sh, KK
Lacey, D
Hall, AW
机构
[1] Russian Acad Sci, Inst Macromol Cpds, St Petersburg 199004, Russia
[2] St Petersburg State Univ, Inst Phys, Petrodvorets Branch, Petrodvorets 198904, Russia
[3] Univ Potsdam, Res Ctr Thin Organ & Biochem Films, D-14513 Teltow, Germany
[4] Univ Hull, Sch Chem, Fac Sci & Environm, Hull HU6 7RX, N Humberside, England
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中图分类号
O63 [高分子化学(高聚物)];
学科分类号
070305 ; 080501 ; 081704 ;
摘要
The electrooptical, dielectric, and hydrodynamic properties of two new comb-shaped LC polymers in benzene and chloroform solutions were studied. The monomer group of a polymer contains a polar group (-CN- or -COCH3-) in the backbone and a hydroxyl group in a spacer linking a cyanobiphenyl side mesogenic group to the backbone. The electrooptical and dielectric properties of the synthesized polymers are compared with the properties of the homologous series of alkoxycyanobiphenyls, which model the side chains of the polymers under study. The observed difference in the values of the Kerr constant is explained by a different mobility of the side mesogenic groups in the studied polymers, which is related to the specific features of the chemical and dipole structures of macromolecules.
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页码:497 / 504
页数:8
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