Synthesis and mesomorphic properties of 1,1-difluoroalkyl-substituted biphenylthienyl and terphenyl liquid crystals. A comparative study of mesomorphic behavior relative to alkyl, alkoxy and alkanoyl analogsElectronic supplementary information (ESI) available: experimental details for compounds 4, 9, 10, 12, 15–19, 25–39, 45 and 49. See http://www.rsc.org/suppdata/jm/b1/b102059p/
作者:Andre A. Kiryanov、Paul Sampson、Alexander J. Seed
DOI:10.1039/b102059p
日期:2001.11.23
A variety of biphenylthienyl and terphenyl-based liquid crystalline materials were prepared that incorporate a 1,1-difluoropentyl terminal group. The mesogenic properties of these compounds were compared and contrasted with analogs where the CF2 moiety was replaced by a -CH2-, -O- or -CO- group. The 1,1-difluoroalkyl group is unique in its behavior and tends to promote orthogonal smectic phase behavior.
制备了一系列含有1,1-二氟戊基末端基团的联苯并噻吩型和三联苯型液晶材料。将这些化合物的液晶性能与CF2基团被-CH2-、-O-或-CO-基团替代的类似物的性能进行了对比。1,1-二氟烷基具有独特的行为,倾向于促进正交层状相行为。