Synthesis and optical properties of a poly (p-phenylenevinylene) derivative and polyfluorenes with bipolar groups along the main chain

被引：21

作者：

Barberis, Vasilis P. ^{[1
]}

Mikroyannidis, John A. ^{[1
]}

机构：

[1] Univ Patras, Dept Chem, Chem Technol Lab, GR-26500 Patras, Greece

来源：

JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY | 2006年 / 44卷 / 11期

关键词：

electron affinity; fluorescence; hole affinity; 1,3,4-oxadiazole; photophysics; polyfluorenes; poly(p-phenylenevinylene); synthesis; triphenylamine;

D O I：

10.1002/pola.21459

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

A poly(p-phenylenevinylene) derivative (PPV-TPA) and a series of statistical copolyfluorenes (PF-TPA) containing oxadiazole and triphenylamine segments along the main chain were synthesized by the Heck reaction and nickel-mediated coupling, respectively. The PF-TPA copolyfluorenes with relatively low contents of oxadiazole and triphenylamine units were readily soluble in common organic solvents, whereas the other copolyfluorenes displayed lower solubility. PPV-TPA showed excellent solubility in solvents such as tetrahydrofuran (THF), dichloromethane, chloroform, and toluene. Thin films of the polymers absorbed light in the range of 375-396 nm and had optical band gaps of 2.76-2.98 eV They emitted blue-green light with a maximum at 414-522 nm. The fluorescence quantum yields in THF solutions were 0.08-0.53. The copolyfluorene PF-TPA thin films with high contents of oxadiazole and triphenylamine moieties emitted pure blue light that remained stable even after annealing at 150 degrees C for 4 h in air. (c) 2006 Wiley Periodicals, Inc.

引用

页码：3556 / 3566

页数：11

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