Symmetric bi-pyridyl banana-shaped molecule and its intermolecular hydrogen bonding liquid-crystalline complexes
作者:Dan Sui、Qiufei Hou、Jia Chai、Ling Ye、Liyan Zhao、Min Li、Shimei Jiang
DOI:10.1016/j.molstruc.2008.04.005
日期:2008.11
A new symmetric bi-pyridyl banana-shaped molecule 1,3-phenylene diisonicotinate (PDI) was designed and synthesized. Its molecular structure was confirmed by FTIR, Elemental analysis and 1H NMR. X-ray crystallographic study reveals that there is an angle of approximate 118° among the centroids of the three rings (pyridyl–phenyl–pyridyl) in each PDI molecule indicating a desired banana shape. In addition
摘要 设计并合成了一种新型对称双吡啶基香蕉形分子1,3-亚苯基二异烟酸酯(PDI)。其分子结构经FTIR、元素分析和1H NMR确证。X 射线晶体学研究表明,每个 PDI 分子中三个环(吡啶基-苯基-吡啶基)的质心之间的角度约为 118°,表明所需的香蕉形状。此外,合成并表征了一系列由PDI(质子受体)和4-烷氧基苯甲酸(nBA,质子供体)之间的分子间氢键诱导的液晶配合物nBA:PDI:nBA。通过差示扫描量热法、偏光显微镜和X射线衍射研究了nBA:PDI:nBA配合物的介晶性质和光学结构。