1086595-79-0Relevant academic research and scientific papers
Biphenyl-based disc- vs. rod-shaped phenylacetylenes: Mesomorphism and electronic properties
Hennrich, Gunther,Ortiz, Pedro D.,Cavero, Emma,Hanes, Robert E.,Serrano, Jose Luis
, p. 4575 - 4579 (2008)
A standard Sonogashira coupling protocol has been applied for the preparation of a C3-symmetric phenylacetylene (2) and the corresponding linear phenylacetylene (3) incorporating terminal biphenyl substituents. The study of the mesomorphic properties of the target compounds, as well as mixtures of both, reveals that only the calamitic biphenylylacetylene 3 forms smectic liquid crystals. Upon investigating the electronic situation of both biphenylylacetylenes by spectroscopic methods and computational calculations, it becomes evident that 2 can be considered the trimeric analogue of 3 which however does not form liquid crystalline phases. Wiley-VCH Verlag GmbH & Co. KGaA, 2008.
