Unsymmetry effect of hexa-peri-hexabenzocoronenes on columnar mesophase behaviour |
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| Authors: | Yi-Jing Huang Ting-Chi Li Che-Wei Chang |
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| Institution: | Department of Chemistry, National Kaohsiung Normal University (NKNU), Taiwan, Republic of China |
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| Abstract: | To address the effects of molecular symmetry on the phase of columnar liquid crystals, a series of unsymmetry (C1) and symmetry (D3h) hexa-peri-hexabenzocoronene derivatives was prepared. Compounds 3 and 4, as well as a mixture of compounds 3+4, all had a significantly lower melting temperature and clearing temperature than high-symmetry compounds (D6h), and all results show a strong dependence on molecular symmetry. |
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| Keywords: | Low symmetry hexa-peri-hexabenzocoronene columnar phase discotic liquid crystals |
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