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Issue 6, 2001
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CPI (complementary polytopic interaction) stabilised liquid crystal compounds formed by esters of 2-hydroxy-3,6,7,10,11-pentakis(hexyloxy)triphenylene

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Abstract

An improved synthesis of 2-hydroxy-3,6,7,10,11-pentakis(hexyloxy)triphenylene 6 is reported which is based on the oxidative coupling of 2-acetoxy-1-hexyloxybenzene 3 to 3,3′,4,4′-tetrakis(hexyloxy)biphenyl 4. Most of the esters of this phenol 715, give an enantiotopic Colh columnar liquid crystal phase, which is stable over a wide temperature interval. This can be further enhanced by formation of 1 ∶ 1 CPI compounds with either 2,3,6,7,10,11-hexakis(4-nonylphenyl)triphenylene {PTP9} 1 or hexakis(4-nonylphenyl)dipyrazino[2,3-f:2′,3′-h]quinoxaline {PDQ9} 2. As with other triphenylene derivatives, these additives can also be used to induce liquid crystal behaviour in otherwise non-mesogenic esters.

Graphical abstract: CPI (complementary polytopic interaction) stabilised liquid crystal compounds formed by esters of 2-hydroxy-3,6,7,10,11-pentakis(hexyloxy)triphenylene

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Publication details

The article was received on 10 Nov 2000, accepted on 20 Mar 2001 and first published on 18 Apr 2001


Article type: Paper
DOI: 10.1039/B009060N
Citation: J. Mater. Chem., 2001,11, 1612-1617
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    CPI (complementary polytopic interaction) stabilised liquid crystal compounds formed by esters of 2-hydroxy-3,6,7,10,11-pentakis(hexyloxy)triphenylene

    N. Boden, R. J. Bushby, Q. Liu and O. R. Lozman, J. Mater. Chem., 2001, 11, 1612
    DOI: 10.1039/B009060N

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