Polyfluorene photophysics

被引：135

作者：

Monkman, Andy ^{[1
]}

Rothe, Carsten ^{[1
]}

King, Simon ^{[1
]}

Dias, Fernando ^{[1
]}

机构：

[1] Univ Durham, Organ Electroact Polymer Res Grp, Durham DH1 3LE, England

来源：

POLYFLUORENES | 2008年 / 212卷 / 01期

关键词：

ASE; charge pairs; exciton dynamics; fluorescence lifetime; keto defects; phosphorescence; polyfluorene beta-phase;

D O I：

10.1007/12_2008_147

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

The fundamental optical properties and processes that occur in the polyfluorenes are discussed. Details are given on the production of singlet and triplet excitons, their emissive decay channels via fluorescence and phosphorescence and non emissive decay via quenching, together with exciton lifetime and quantum yields of production. The interaction of excitons in these polymers is then discussed at length describing exciton migration dynamics, exciton-exciton annihilation processes and delayed fluorescence and the trapping of excitons at defect sites. Photogenerated charge state production is described along with intra-chain charge transfer states in fluorene co-polymers. Finally, sections describing the optical properties of the beta-phase of polyfluorene are given along with amplified spontaneous emission which occurs at high beta phase exciton populations.

引用

页码：187 / 225

页数：39

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