基于四硫富瓦烯和氰基联苯单元的玻璃态液晶

Glassy liquid crystals based on tetrathiafulvalene(TTF)and cyanobiphenyl moieties

将好的介晶单元氰基联苯基元引入到四硫富瓦烯的外围合成了目标液晶化合物（1）．通过NMR，IR，MALDI-TOFMS以及元素分析对产物进行充分结构表征．通过DSC、偏光显微镜（POM）和小角X一射线衍射对它们的液晶相进行研究．结果表明，化合物1是室温下具有玻璃态的液晶化合物，在较宽温度范围呈现近晶A相（SA）．采用伏安法讨论了其电化学行为，循环伏安图显示化合物1在-1～1V区域内有1个还原波和2个氧化波，它们分别归属于氰基联苯的还原过程及四硫富瓦烯的自由基阳离子和上价阳离子的形成过程．

Tetrathiafulvalene （TTF） derivatives with favourable electron-donor properties play an irre- placeable role in the research field of organic photovoltaic materials. Herein good mesocrystalline group cyanobiphenyl was introduced to TTF periphery to synthesize liquid crystal compound 1. Com- pound 1 was characterized by NMR, IR, elemental analysis and MALDI-TOF MS. Its liquid crystal- line phase was studied through DSC, polarization microscope （POM） and small angle X-ray diffrac- tion. The results demonstrated that at room temperature the target compound 1 was liquid crystalline compound with glassy phase and in a wider range of temperature was smectic A phase （SA）. Addition- ally, the electrochemical behavior of the target compound was discussed by voltammetry. The cyclic voltammograms show the target compound has one oxidation and two reduction wave in the range of -1-1 V, respectively belonging to the reduction-process of cyano substituted benzene, radical cation and divalent cation of TTF.