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

TJ Dingemans, NS Murthy…

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

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Citation Number: 142

Abstract

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. ...

~90%

~88%

~75%

~72%

~73%

~82%

~46%

~86%

~71%

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