5-(4′-烷氧基苯基)-8-羟基喹啉锌的合成及其偏振发光性能  

Synthesis and Polarized Absorption and Photoluminescence of 5-(4′-Alkoxyl-phenyl)-8-hydroxyquinoline Zn(Ⅱ) Complexes

作　　者：王欣[1] 骆开均[1] 蒋世平[1] 贾娟[1] 陈艳芳[1] 

机构地区：[1]四川师范大学化学与材料科学学院,成都610068

出　　处：《无机化学学报》2011年第9期1781-1787,共7页Chinese Journal of Inorganic Chemistry

基　　金：国家自然科学基金(No.20472060;21072141);四川省教育厅应用基础(No.08ZA040)资助项目

摘　　要：本文通过在8-羟基喹啉的5位上引入含不同碳链长度的对烷氧基苯基,合成了一类5-(4′-烷氧基苯基)-8-羟基喹啉锌配合物(C6OphQ)2Zn、(C8OphQ)2Zn和(C12OphQ)2Zn。通过DSC和偏振显微镜等热力学仪器考察了它们的液晶性,发现长链的5-对烷氧基-苯基-8-羟基喹啉锌均具有液晶性。将它们在聚酰亚胺取向薄膜上进行排列,应用装备有偏振器的紫外分光光度计和荧光分光光度仪测定了薄膜偏振光性质。实验发现,这些具有液晶性质的发光配合物在聚酰亚胺取向薄膜上能够产生有序排列,表现出一定的吸收和发射二色比。其中配合物(C8OphQ)2Zn在332 nm处的最大吸收二色比是2.0,在500 nm处的发射二色比为2.4。Three complexes of 5-（4＇-alkoxyl-phenyl）-8-hydroxyquinoline Zn（Ⅱ）, （C6OphQ）2Zn, （CsOphQ）2Zn and （C12OphQ）2Zn, were synthesized. Their chemical structures and photophysical properties were characterized by 1H NMR, MS, UV-Vis and photoluminescence （PL） spectra. Differential scanning calorimetry （DSC） and polarizing microscope were used to probe liquid properties of the complexes. The polarized absorption and photoluminescence spectrs of the aligned films of the complexes on the rubbed polyimide film were recorded on a UV-4802S spectrophotometer and Perkin Elmer LS55 fluorometer equipped with a polarizer. It is found that the complexes can be aligned preferably on rubbed polyimide film for their liquid crystal properties. For an aligned film of （C8OphQ）2Zn complex, the maxima of the absorption dichroic ratio at 332 nm and emission dichroic ratio at 500 nm are 2.0 and 2.4 respectively.

关 键 词：5-(4′-烷氧基苯基)-8-羟基喹啉锌配合物 合成 液晶 偏振光 

分 类 号：O614.241[理学—无机化学]