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A rational synthesis of polyacrylates with discogenic side groups

 

作者: N. BODEN,   R. J. BUSHBY,   Z. B. LU,  

 

期刊: Liquid Crystals  (Taylor Available online 1998)
卷期: Volume 25, issue 1  

页码: 47-58

 

ISSN:0267-8292

 

年代: 1998

 

DOI:10.1080/026782998206489

 

出版商: Taylor & Francis Group

 

数据来源: Taylor

 

摘要:

The ferric chloride mediated oxidative coupling of 3,3,4,4-tetrahexyloxybiphenyl with 2-hexyloxyanisole followed by demethylation gave 3,6,7,10,11-pentahexyloxy-2-hydroxyor triphenylene. Reaction with tert -butyldimethylsilyl-protected 6-bromohexanol, removal of the protecting group, and condensation with acryloyl chloride methacryloyl chloride gave acrylate and methacrylate monomers with hexamethylene 'spacers'. Alternatively, reaction of 3,6,7,10,11-pentahexyloxy-2-hydroxytriphenylene with 2-(2-chloroethoxy)ethanol followed by acryloyl chloride or methacryloyl chloride gave acrylate and methacrylate monomers with diethylenoxy 'spacers'. Both of the poly(acrylate) homopolymers and the poly(methacrylate) homopolymer with the diethylenoxy 'spacer' gave columnar liquid crystal phases. This is contrary to the current perception that the methacrylate polymer backbone is too inflexible to be incorporated in columnar phases.

 

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