采用荧光光谱技术,测量了一种卟啉侧链聚合物:卟啉丙烯酸酯-苯乙烯共聚物(P[(por)A-S])的稳态和瞬态的发光性能。通过将聚合物P[(por)A-S]掺杂到有机玻璃(PMMA)中,研究了链间距离对于P[(por)A-S]发光性能的影响。结果表明:随着聚合物分子浓度增大,即链间距离减小,导致卟啉侧链基团之间的相互间作用增加,使其激发态无辐射跃迁几率增加,聚合物荧光强度减弱,激发态寿命缩短。讨论了上述过程产生的原因。
The steady-static and transient luminescence in porphyrin side chain polymer P[ (por)A-S] doped in PMMA were studied by using transient and steady-state fluorescence spectroscopic technique. The results show that with the decrease of the interchain distance of P[ (por)A-S ], the interactions of the porphyrins enhance which increase the nonradiating transition. As a result, the luminescence efficiency and'the lifetime are inversely proportional to the interchain distance of P[ (por)A-S]. We also discuss the origin of the luminescence of P [ (por)A-S] doped in PMMA.