Theoretical and Experimental Study on the Effect of End Chain Length on Ultraviolet Absorption Behavior and Photostability of Alkoxy Benzoate Based Liquid Crystals
作者:Ahmed M. El Defrawy、Said Z. Mohammady、Marwa G. Elghalban、Hossa F. El Sharief
DOI:10.13005/ojc/330317
日期:2017.6.28
Liquid crystals homologous of 4-(4-chlorobenzoyloxy)phenyl 4-(n-alkoxy)benzoate (nCBPAB: n=8,14,16, where n is the number of carbon atoms in the alkoxy chain) were prepared and investigated for their liquid crystalline properties. The geometrical parameters and atomic charge distribution of the nCBPAB structures under investigation have been calculated using DFT level of calculation applying the B3LYP/6-31G(d) basis set. TD-DFT calculations have been used to predict the absorption spectra of the considered molecules. Furthermore, theoretically predicted molecular descriptors have been used to correlate with the phase stability of these molecules. In addition to that, the photo stability of these molecules has been investigated which provide valuable data for experimental applications.
制备了与4-(4-氯苯甲酰氧基)苯基4-(正烷氧基)苯甲酸酯(nCBPAB:n=8,14,16,其中n是烷氧基链中的碳原子数)同源的液晶,并对其液晶性质进行了研究。使用B3LYP/6-31G(d)基组,通过DFT计算水平计算了所研究nCBPAB结构的几何参数和原子电荷分布。使用TD-DFT计算来预测所考虑分子的吸收光谱。此外,理论预测的分子描述符被用于与这些分子的相稳定性相关联。除此之外,还研究了这些分子的光稳定性,为实验应用提供了有价值的数据。