Bent shaped H-bonded mesogens derived from 1, 5-bis (4-hydroxyphenyl) penta-1, 4-dien-3-one: Synthesis, photophysical, mesomorphism and computational studies
作者:Manoj Kr. Paul、Popita Paul、Sandip Kumar Saha、Sudip Choudhury
DOI:10.1016/j.molliq.2014.05.007
日期:2014.9
different linking groups (viz., imine (CHN), azo (NN), ester (COO)) as side wing. The transition temperatures and phase characterization have been investigated by differential scanning calorimetry and polarized optical microscopy. The bent core unit is fluorescent and non-mesogenic, whereas, all the nitrile terminated polar ligands are non-fluorescent and displayed enantiotropic smectic A phase. The H-bonded
报道了衍生自1、5-双(4-羟苯基)penta-1、4-dien-3-one的新型氢键(H键)弯曲形状的介晶的合成,表征,光物理和同构。H键合弯曲形状的介晶是由1、2摩尔比的1、5-双(4-羟苯基)penta-1、4-dien-3-one作为弯曲单元和极性腈基封端的配体以1:2摩尔比络合形成的连接基团(即亚胺(CH N ),偶氮(N N ),酯(COO))作为侧翼。已经通过差示扫描量热法和偏振光学显微镜研究了转变温度和相表征。弯曲的核单元是荧光的和非介晶的,而所有腈基封端的极性配体都是非荧光的,并表现出对映性近晶A相。氢键复合物是荧光的和介晶的。向列相在两个氢键复合物中被诱导,而其中一个氢键复合物中显示出未知的B x相。进行计算研究以获得化合物的最佳稳定分子结构,研究其电子跃迁并与实验结果进行比较。