高分子化8-羟基喹啉锂的合成与静电自组装研究  

PREPARATION OF AN 8-HYDROXYQUINOLINE LITHIUM-CONTAINING COPOLYMER AND ITS ELECTROSTATIC LAYER-BY-LAYER SELF-ASSEMBLY

作　　者：余登斌[1] 孟文清[1] 蒋春霞[1] 陈德本[1] 钟安永[1] 

机构地区：[1]四川大学化学学院,成都610064

出　　处：《高分子学报》2008年第7期708-713,共6页Acta Polymerica Sinica

基　　金：国家自然科学基金(基金号50573050)资助项目

摘　　要：设计合成了甲基丙烯酸二甲氨基乙酯(DM)含量为9.69%的丙烯酸甲酯共聚物(CPA),将制得的5-氯甲基-8-羟基喹啉(CHQ)挂接到CPA上,得到季铵型高分子化8-羟基喹啉(CPA-HQ)后,与金属离子Li+配位得到CPA-HQ-Li.化合物结构通过红外、紫外和荧光光谱等表征.多层超薄膜用CPA-HQ-Li和聚阴离子电解质(全氟磺酸)通过静电自组装制得.自组装膜的紫外和荧光相对于溶液(溶剂为四氢呋喃)发生了红移,膜的紫外吸收强度随组装膜层数增加线性增大,荧光强度随膜层数增加线性递减.高分子化8-羟基喹啉锂溶液和自组装膜的紫外和荧光光谱与文献报道一致.实验结果表明这种材料可用于有机电致发光器件(OLEDs)的制备.The design of next-generation organic light-emitting diodes （OLEDs） is focused on polymers containing electroluminescent functionality with efficient charge-transport capability. It is desirable to investigate display materials which have excellent fluorescent properties of 8-hydroxyquinoline metal chelates and outstanding processing properties of polymers. An 8-hydroxyquinoline lithium （LiQ）-containing polymer （CPA-HQ-Li） was synthesized by chelating reaction of Li＋ and HQ-pendant copolymer （CPA-HQ）, in which CPA-HQ was prepared with 5-chloromethyl-8-hydroxyquinoline （CHQ） and a copolymer （CPA） which was synthesized with n-butyl acrylate （ BA）, 2-（dimethylamino） ethyl methacrylate （ DM ）, methyl methacrylate （ MMA）, 2-hydroxyethyl acrylate （HEA） and styrene （ST） . As a functional group, DM was added according to 9.69 wt% as original material in the process of synthesizing CPA. Moreover, this positive-charged polymer was suitable for thin film deposition from dilute polymer solutions, the quarternary amonium PDM was used as the cation first adsoption layer to abtain a flexible substrate, the sulfonated fluoropolymer （Nafion 117） was used as the anion hole electon transport, and then, muhilayer thin films were obtained by electrostatic self-assembly （ESA）. For the characterization of the structures and properties of these polymers and muhilayer films, the technologies inclucding ^1H-NMR, UV-Vis, FT-IR, photoluminescence （PL） spectra and gel permeation chromatography analysis （GPC） etc. were used. FT-IR analysis displays that the stretching vibration peak located initially at 1638 cm-1 is blue shifted to 1593 cm^-1 nearby. It is found from UV-Vis absorbance that the absorption peak corresponding to π→π electron transition of quinoline is still present, but it is red shifted from 248 nm to 258 nm, and the n→π electron transition at 320 nm weakens or disappears. In addition, there is a broad absorption at 371 nm corresponding to the chelati

关 键 词：静电自组装 8-羟基喹啉 发光材料 丙烯酸酯共聚物 季铵型高分子化合物 聚电解质 

分 类 号：O631.3[理学—高分子化学]