聚二氯磷腈(PDCP)与N-(6-羟基己基)咔唑发生亲核取代, 得到了热稳定性良好(约290 ℃)、玻璃化温度较低(约36 ℃)的光电导材料聚双(6-咔唑基己氧基)磷腈。稳态荧光光谱表明, N-(6-羟基己基)咔唑和聚双(6-咔唑基己氧基)磷腈的荧光发射最大波长分别在410 nm和393 nm, 其荧光强度相比于咔唑的最大波长420 nm依次减弱并发生蓝移;瞬态荧光光谱表明聚磷腈的线型主链结构和孤立的dπ-pπ杂化轨道体系导致其空间位阻增大, 破坏了原有的共轭体系, 使聚双(6-咔唑基己氧基)磷腈在不同发射波长下的荧光寿命普遍减小。

Poly［bis(6-carbazolhexyloxy)］phosphazene with good thermal stability(about 290 ℃) and a low glass transition temperature(about 36 ℃) was synthesized with N-(6-hydroxyhexyl)carbazole and linear polydichlorophosphazene. Steady state fluorescence spectra elucidated that the maximum fluorescence-emission wavelengths of carbazole, N-(6-hydroxyhexyl)carbazole and poly［bis(6-carbazolhexyloxy)］phosphazene are 420, 410, and 393 nm, respectively. The fluorescence intensity of N-(6-hydroxyhexyl)carbazole and poly［bis(6-carbazolhexyloxy)］phosphazene decreases orderly and has a blue-shift compared with carbazole. The transient fluorescence spectra show that the linear backbone and the isolated dπ-pπ hybrid orbital of polyphosphazene might increase steric hindrance and disrupt the previous conjugate system, leading to decrease of the fluorescence lifetime of poly［bis(6-carbazolhexyloxy)］phosphazene at several emission wavelengths.