Main-chain liquid crystalline polymers based on bis-etherified 9,9-dihexyl-2, 7-bis(4′-hydroxy-1,1′-biphen-4-yl)fluorenes

被引：12
作者：
Sovic, Tanja
Kappaun, Stefan
Koppitz, Andreas
Zojer, Egbert
Saf, Robert
Bartl, Karin
Fodor-Csorba, Katalin
Vajda, Aniko
Diele, Siegmar
Pelzl, Gerhard
Slugovc, Christian
Stelzer, Franz
机构：
[1] Graz Univ Technol, ICTOS, A-8010 Graz, Austria
[2] Graz Univ Technol, Inst Solid State Phys, A-8010 Graz, Austria
[3] Hungarian Acad Sci, Res Inst Solid State Phys & Opt, H-1525 Budapest, Hungary
[4] Univ Halle Wittenberg, Inst Phys Chem, D-06108 Halle, Germany
来源：
MACROMOLECULAR CHEMISTRY AND PHYSICS | 2007年 / 208卷 / 13期
关键词：
ADMET; dichroic ratio; liquid crystals; main chain; liquid crystalline polymers; synthesis; films; POLARIZED ELECTROLUMINESCENCE; METATHESIS POLYMERIZATION; THERMOTROPIC ALIGNMENT; MOLECULAR-WEIGHT; OPTICAL-PROPERTIES; CHARGE-TRANSPORT; POLYFLUORENE; EMISSION; 1,5-HEXADIENE; LUMINESCENCE;
D O I：
10.1002/macp.200600657
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
A series of liquid crystalline compounds based on 2,7-bis(biphenyl)fluorenes was synthesised by a Suzuki cross-coupling reaction and subsequent etherification with different bromoalkenes. By simple variations of the chain lengths the temperature range in which the nematic mesophase is present could be tuned. The described approach offers the possibility of M covalent incorporation of the mesogens into polymers via olefin metathesis techniques, resulting in enlarged stability of the mesophase. Monomers and polymers could be easily aligned on rubbed polyimide substrates as revealed by polarised absorption spectroscopy.
引用
收藏
页码：1458 / 1468
页数：11
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