V型苯乙炔Bola两亲化合物的合成及其液晶、光物理性质研究  

Synthesis,liquid crystalline and photophysical properties of V-shaped phenylacetylene bolaamphiphiles

作　　者：程慧芳[1] 刘启静[1] 武娜[1] 高红飞[1] 王瑾琛[1] 肖玉龙[1] 郭春香[1] 谭晓平[1] 程晓红[1] 

机构地区：[1]教育部自然资源药物化学重点实验室,云南大学化学科学与工程学院,云南昆明650091

出　　处：《云南大学学报（自然科学版）》2014年第5期721-727,共7页Journal of Yunnan University(Natural Sciences Edition)

基　　金：国家自然科学基金(21364017;21274119;21074105);云南省自然科学基金(2013FA007);云南大学研究生科研课题(ynuy201395);云南省博士研究生学术新人奖资助项目

摘　　要：以Pd催化的Sonogasira偶联反应为关键步骤合成V型苯乙炔Bola两亲化合物,产物结构经1H NMR、13C NMR及元素分析得到证实.采用偏光显微镜(POM),DSC等手段对化合物的液晶行为进行了研究,研究结果表明,该化合物是柱相热致性液晶.化合物的紫外光谱证实组装模型中V型芳香核间的π-π堆积形式为H聚集结构,由紫外光谱换算后的hν-(ahν)2关系图推算的能隙范围推测该化合物可作为半导体材料,荧光光谱推断它们可以作为潜在的蓝光材料,化合物较大的Stokes位移值表明该化合物在激光材料及荧光光子的放射性计量仪等方面有潜在应用.此外,高斯计算模拟量化结果显示了该化合物近乎理想的平面共轭结构.V- shaped phenylacetylene bolaamphiphile has been synthesized via Pd -catalyzed Sonogasira coupling reaction as key step. The structure of the compound was identified by 1 H NMR, 13 C NMR and elemental analysis. The mesogenic behavior of the compound was investigated by polarizing optical microscopy （POM） and DSC. The result showed that the compound represented columnar thermotropic liquid crystal（LC） and the possi- ble model of columnar phase was set up. UV spectra confirmed the formation of ~ - stacked aggregates in V - shaped aromatic cores with a H - type parallel stacking mode. The range of energy gap calculated from UV spec- trum implied that the compound could be used as semiconductor material. It can be also used as a potential blue emitting material according to its fluorescence spectrum. The large Stokes shift indicated that the compound had great potential application in laser material and fluorescence photon dosimetry. In addition, Gaussian simulation calculation result showed that the compound had an ideal planar conjugated structure.

关 键 词：V型液晶分子 Bola两亲 合成 自组装 液晶 

分 类 号：O623.76[理学—有机化学]