Javelin-, hockey stick-, and boomerang-shaped liquid crystals. Structural variations on p-quinquephenyl

TJ Dingemans, NS Murthy…

文献索引：Dingemans, Theo J.; Murthy, N. Sanjeeva; Samulski, Edward T. Journal of Physical Chemistry B, 2001 , vol. 105, # 37 p. 8845 - 8860

全文：HTML全文

被引用次数: 142

摘要

The ramifications of changing molecular geometry in a series of all-aromatic liquid crystals derived from p-quinquephenyl are reported. Substituting heterocyclic rings such as thiophene, oxadiazole, oxazole, or 1, 3-phenylene into the p-quinquephenylene core affects molecular shape changes via the substituent's exocyclic bond angle. In general, we found that introducing nonlinearity into molecules depresses the melting transition temperature. ...