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以不同比例的重氮盐分别与聚双(N-羟基己氧基咔唑)磷腈(P-1)进行偶合反应,得到了一组以咔唑和对硝基偶氮咔唑为官能团的双功能型光折变聚合物P-2,P-3和P-4,用31 P NMR,1 H NMR,IR,TG,DSC和UV-Vis光谱对该组聚合物进行表征和分析,以325nm的激发波长对P-1,P-2,P-3和P-4进行固体荧光稳态发射光谱的测试。结果表明,该组聚合物具有良好的热稳定性(Td≈300℃)和较低的玻璃化温度(Tg≈30～40℃),P-1具有良好的荧光活性,硝基的引入,导致P-2,P-3和P-4的荧光发生不同程度的猝灭,咔唑与对硝基偶氮咔唑的数量及其空间分布排列的都会对其荧光性能产生影响。
A series of polycarbazoles were synthesized by the coupling reaction of poly (bis (N-hydroxyhexyloxy) carbazole) phosphazene (P-1) The bifunctional photorefractive polymers P-2, P-3 and P-4 were characterized and analyzed by 31 P NMR, 1 H NMR, IR, TG, DSC and UV-Vis spectra to Solid-state fluorescence emission spectra of P-1, P-2, P-3 and P-4 were measured at 325 nm excitation wavelength. The results show that the polymer has good thermal stability (Td ≈300 ℃) and low glass transition temperature (Tg ≈30 ~ 40 ℃), P-1 has good fluorescence activity, and the introduction of nitro group leads to Fluorescence of P-2, P-3 and P-4 quenched to some extent. The number of carbazoles and p-nitro-azocarbazoles and their spatial distribution all affect their fluorescence properties.