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合成了2种新型含8-羟基喹啉侧基聚酯(P5,P6),进一步与无水醋酸锌和六水氯化铝反应,得到4种聚酯锌、铝配合物(P5-Zn,P6-Zn,P5-Al,P6-Al).采用元素分析仪、傅里叶变换红外光谱仪、紫外可见光谱仪、核磁共振氢谱仪、凝胶渗透色谱仪、热重分析仪和荧光光谱仪等技术手段对其结构和性能进行了表征.聚酯P5和P6易溶于四氢呋喃(THF)、N,N-二甲基甲酰胺(DMF)、N,N-二甲基乙酰胺(DMAC)、二甲基亚砜(DMSO)和N-甲基吡咯烷酮(NMP)等常用的有机溶剂,配合物P5-Zn、P6-Zn、P5-A1和P6-A1部分溶于DMF、DMAC、DMSO和NMP等溶剂.聚酯P5和P6的质均相对分子质量Mw为4.11 ×104和5.42×104,相对分子质量分布指数PDI为1.50和1.40.聚酯巧P5和P6的5％失重温度分别为261.4和291.1℃,配合物P5-Zn、P6-Zn、P5-A1和P6-Al的5％失重温度分别为307.7、306.2、286.3和297.8℃.聚酯P5和P6的DMF溶液(5×10-5 mol/L)在432和429 nm处发射较弱紫色荧光,配合物P5-Zn、P6-Zn、P5-A1和P6-Al的DMF溶液(5×10-5 mol/L)分别在540、537、517和522 nm处发强绿色荧光,固体分别在550、556、531和535 nm处发射强绿色荧光.

Two kinds of novel polyesters containing 8-hydroxyquinoline side groups (P5,P6) were synthesized by multistep reactions.Subsequently,polyesters P5 and P6 reacted with zinc acetate and aluminum chloride to get zinc complexes (P5-Zn,P6-Zn) and aluminum complexes (P5-Al,P6-Al).The structures and properties of polyesters and metal complexes were characterized by elemental analysis,IR,UV-Vis,1H NMR,GPC,TG and fluorescence spectroscopy.Polyesters P5 and P6 can be easily dissolved in many solvents such as tetrahydrofurane (THF),N,N-dimethyl formamide (DMF),N,N-dimethyl acetamide (DMAC),dimethylsulfoxide (DMSO),and N-methyl pyrrolidone (NMP) at room temperature.Complexes PS-Zn,P6-Zn,P5-Al and P6-Al can be partially dissolved in DMF,DMAc,DMSO and NMP.The mass mean relative molecular mass(Mw) and polydispersity index(PDI) of P5 and P6 are 41200,54200 and 1.50,1.40,respectively.The 5％ mass loss temperatures of P5,P6,P5-Zn,P6-Zn,P5-Al and P6-Al are 261.4,291.1,307.7,306.2,286.3 and 297.8 ℃,respectively.Fluorescence emission peaks of P5 and P6 in DMF solution appear at 432 and 429 nm,emitting weak purple light.Fluorescence emission peaks of P5-Zn,P6-Zn,P5-Al and P6-Al in solid state emerge at 550,556,531,535 nm,emitting strong green light,which are all red-shifted to some extent,compared with their emission peaks in DMF solution located at 540,537,517 and 522 nm.