QSPR study on transition temperature of tetraphenylethene-derived columnar liquid crystals

The paper presents a study regarding the correlation of the transition temperature for nine derivatives of the tetraphenylethene, a class of columnar liquid crystals, with 35 molecular descriptors (22 topological indices and 13 Van der Waals parameters), calculated for these compounds. Their transition temperature was modelled in mono- and multivariate linear regression equations. In linear, simple correlations, 19 out of the 22 topological indices and 3 out of the 13 Van der Waals parameters show a correlation coefficient higher than 0,8; in multivariate linear correlations the results are even better, with correlation coefficients larger than 0,9. Keywords: correlation, columnar crystals, topological indices