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通过Wittig法合成了一种新型三苯胺-噁二唑超支化共轭聚合物HPTPA-OXD,通过IR,1H NMR,凝胶渗透色谱(GPC)等对其结构进行了表征.测定了HPTPA-OXD在不同溶剂中的紫外吸收光谱、荧光光谱、荧光寿命及量子产率.HPTPA-OXD在甲苯,CHCl3,THF,CH2Cl2,DMF溶液中的荧光发射峰分别为473,497,507,522和547 nm,在CH2Cl2,甲苯和THF中量子产率分别为0.33,0.31和0.18,在THF,CH2Cl2,DMF中的荧光寿命分别为1.24,1.39和1.14 ns.电化学性能用循环伏安法测定,超支化荧光聚合物HPTPA-OXD的HOMO和LUMO能级分别为-4.91和-2.44 eV.HPTPA-OXD的分解温度为440℃,热稳定性良好。
A novel triphenylamine-oxadiazole hyperbranched conjugated polymer HPTPA-OXD was synthesized by Wittig method and its structure was characterized by IR, 1H NMR and gel permeation chromatography (GPC) .HPTPA-OXD The fluorescence emission spectra of HPP A-OXD in toluene, CHCl3, THF, CH2Cl2 and DMF solutions were 473, 497, 507, 522 and 547 nm, respectively. The quantum yields of THF were 0.33, 0.31 and 0.18, respectively, and the fluorescence lifetime was 1.24, 1.39 and 1.14 ns respectively in THF, CH 2 Cl 2 and DMF.The electrochemical performance was measured by cyclic voltammetry, and the hyperbranched fluorescent polymer HPTPA-OXD The HOMO and LUMO energy levels were -4.91 and -2.44 eV, respectively.HPTPA-OXD had a decomposition temperature of 440 ℃ and good thermal stability.