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Original Articles

Branched chain discotics Phase structure and orientation behaviour

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Pages 513-519 | Received 13 Jan 1993, Accepted 20 May 1993, Published online: 24 Sep 2006
 

Abstract

Studies show that branching the side chains of hexakis(acoyloxy)-benzenes (HAB) and -cyclohexanes (HAChx) does not modify the structure of the discotic mesophase formed. Shear fields appear to act on entire columns, not on individual discs, thereby causing alignment of columns in the shear direction. X-ray diffraction patterns of samples at temperatures between 30°C and 40°C above the clearing temperature provide evidence for the presence of mesophase order.

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