Synthesis, mesomorphic behaviour and the uniaxial nature of 1,2,4,5-tetra-(4-alkoxybenzoyloxy)benzenes

Article abstract of DOI:10.1080/10587259508038707

A homologous series of 1,2,4,5-tetra-(4-alkoxybenzoyloxy)benzenes (2, R = C₄H₉, C₆H₁₃ to C₁₆H₃₃ and C₁₈H₃₇) has been synthesised. Optical microscopy revealed that the compounds with R = C₄H₉, C₆H₁₃ to C₁₀H₂₁ have a nematic phase, compounds with R = C₁₁H₂₃ to C₁₄H₂₉ have nematic and smectic C phases and compounds with R = C₁₅H₃₁, C₁₆H₃₃ and C₁₈H₃₇ have only a smectic C phase. The T_N-I values show an 'odd-even' alternation which is typical of calamitic systems. The refractive indices for aligned samples of compound 2h (R = C₁₀H₂₁) demonstrate that the nematic phase is uniaxial.

Full text of DOI:10.1080/10587259508038707

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Molecular Crystals and Liquid Crystals
Science and Technology. Section A.
Molecular Crystals and Liquid Crystals
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The Synthesis, Mesomorphic Behaviour
and the Uniaxial Nature of 1,2,4,5-Tetra-
(4-Alkoxybenzoyloxy) Benzenes
W. D. J. Amilaprasadh Norbert a , John W. Goodby a , Michael Hird a
, Kenneth J. Toyne a , J. Cliff Jones b & Jay S. Patel c
a School of Chemistry, The University of Hull , Hull, HU6 7RX, UK
b Defence Research Agency , St Andrews Rd, Malvern, WR14 3PS, UK
c Bell Telephone Laboratories , Redbank, NJ, 07001, USA
Published online: 23 Sep 2006.
To cite this article: W. D. J. Amilaprasadh Norbert , John W. Goodby , Michael Hird , Kenneth J.
Toyne , J. Cliff Jones & Jay S. Patel (1995) The Synthesis, Mesomorphic Behaviour and the Uniaxial
Nature of 1,2,4,5-Tetra-(4-Alkoxybenzoyloxy) Benzenes, Molecular Crystals and Liquid Crystals
Science and Technology. Section A. Molecular Crystals and Liquid Crystals, 260:1, 339-350, DOI:
10.1080/10587259508038707
To link to this article: http://dx.doi.org/10.1080/10587259508038707
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