4.8 Article

Thermotropic liquid crystals based on 1,8,9,16-tetrasubstituted tetraphenylenes and their structure-property relationship studies

Journal

CHEMICAL SCIENCE
Volume 2, Issue 6, Pages 1068-1075

Publisher

ROYAL SOC CHEMISTRY
DOI: 10.1039/c1sc00053e

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Funding

  1. Research Grants Council of the Hong Kong Special Administrative Region, China (RGC) [CUHK403909]
  2. University Grants Committee of Hong Kong Special Administrative Region, China [AoE/P-03/08]

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Twelve 1,8,9,16-tetraalkoxytetraphenylenes were synthesized and characterized, five of which exhibiting thermotropic liquid crystal properties were examined by differential scanning calorimetry (DSC), polarizing-light optical microscopy (POM) and variable-temperature X-ray diffractometry (VTXRD). The structure-property relationship of each mesomorphic solid is discussed in the context of the racemic/non-racemic nature of the sample, different chain length of n-alkyl substituents, effect of chain lipophilicity and intermolecular interactions.

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