Abstract
The phase transition from the solid state to the liquid crystal state was investigated for the copper(II) salts of the fatty acids with 10, 12, 14, 16 or 18 carbon atoms in the chain, by measuring the temperature dependence of the conductance and capacitance of a cell containing the material under investigation. The temperatures deduced from these dependences agree reasonably with those found by DSC measurements and with those to be found in the literature. Differences in dielectric behaviour between the samples are qualitatively discussed.
Similar content being viewed by others
References
H. Abied, D. Guillon, A. Skoulios, P. Weber, A. M. Giroud-Godquin and J. C. Marchon, Liq. Crystals, 2 (1987) 269.
A. M. Giroud-Godquin, J. C. Marchon, D. Guillon and A. Skoulios, J. Phys. Chem., 90 (1986) 5502.
M. Ibn-Elhaf, D. Guillon, A. Skoulios, A. M. Giroud-Godquin and P. Maldivi, Liq. Crystals, 11 (1992) 731.
H. A. Ellis and A. De Vries, Molec. Cryst. Liq. Cryst., 163 (1988) 133.
H. A. Ellis, Molec. Cryst. Liq. Cryst., 138 (1986) 321.
A. M. Amorim da Costa, H. D. Burrows, C. F. G. C. Geraldes, J. J. C. Teixeira Dias, C. G. Bazuin, D. Guillon, A. Skoulios, E. Blakemore, G. J. T. Tiddy and D. L. Turner, Liq. Crystals, 1 (1986) 215.
D. P. Strommen, A. M. Giroud-Godquin, P. Maldivi, J. C. Marchon and B. Marchon, Liq. Crystals, 2 (1987) 689.
C. Somerton, Mol. Cryst. Liq. Cryst., 154 (1988) 77.
M. F. R. Moita, M. L. T. S. Duarte and R. Fausto, J. Chem. Soc. Faraday Trans., 90 (1994) 953.
C. P. Smyth, Dielectric behaviour and structure, McGraw Hill, New York, 1955; b) A. K. Jonscher, Dielectric relaxation in Solids, Chelsca Dielectric Press., London, 1985.
T. Carlsson, J. Phys. (Paris), 44 (1983) 909.
L. Frunza, S. Frunza, M. Petrov, A. Sparavigna and S. I. Torgova, Mol. Materials, 6 (1996) 215.
M. J. Bird and T. R. Lomer, Acta Cryst., B28 (1972) 242.
T. R. Lomer and K. Perera, Acta Cryst., B30 (1974) 2912, 2913.
J. C. Marchon, P. Maldivi, A. M. Giroud-Godquin, D. Guillon, A. Skoulios and D. P. Strommen, Phil. Trans. R. Soc. London, A330 (1990) 109.
P. Maldivi, D. Guillon, A. M. Giroud-Godquin, J. C. Marchon, H. Abied, H. Dexpert and A. Skoulios, J. Chim. Phys. 85 (1985) 1651.
R. Fausto, M. F. Ramos Moita and M. L. T. S. Duarte, J. Molec. Struc., 349 (1995) 439.
A. M. Giroud-Godquin, J. M. Latour and J. C. Marchon, Inorg. Chem., 24 (1985) 4452.
M. E. Neubert and A. De Vries, Mol. Cryst. Liq. Cryst., 145 (1987) 1.
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Fausto, R., Duarte, M.L.T.S., Moita, M.F.R. et al. On the Crystal-to-Mesophase Phase Transition in Copper(II) Salts of Even-Chain Fatty Acids. Journal of Thermal Analysis and Calorimetry 53, 133–139 (1998). https://doi.org/10.1023/A:1010111519530
Issue Date:
DOI: https://doi.org/10.1023/A:1010111519530