分子链间距离对于卟啉侧链聚合物稳态及瞬态发光性能的影响  

Influence of Distance of Molecular Chains on Steady-static and Transient Luminescence of Porphyrin Side Chain Polymers

作　　者：沈涵[1] 余汉城[2] 应翊[1] 张伟[1] 王惠[1] 黄锦汪[2] 计亮年[1] 

机构地区：[1]中山大学光电材料与技术国家重点实验室,广东广州510275 [2]中山大学化学与化工学院,广东广州510275

出　　处：《发光学报》2008年第4期732-736,共5页Chinese Journal of Luminescence

基　　金：国家自然科学基金(60478013;20571089);广东省自然科学基金重点(05101819)资助项目

摘　　要：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.

关 键 词：卟啉侧链聚合物 发光性能 分子间相互作用 

分 类 号：O482.31[理学—固体物理]