Polyfluorenes without monoalkylfluorene defects

被引：138

作者：

Cho, Sung Yong

Grimsdale, Andrew C.

Jones, David J.

Watkins, Scott E.

Holmes, Andrew B. ^{[1
]}

机构：

[1] Univ Melbourne, Sch Chem, Bio Inst 21, Parkville, Vic 3010, Australia

[2] Univ Cambridge, Dept Chem, Melville Lab Polymer Synth, Cambridge CB2 1EW, England

[3] Univ London Imperial Coll Sci Technol & Med, Dept Chem, London SW7 2AZ, England

来源：

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY | 2007年 / 129卷 / 39期

关键词：

No abstract available;

D O I：

10.1021/ja074634i

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

A synthetic route to 9,9-dioctyl-9H -fluorene (free of monoalkyl-substituted fluorene defects) by alkylative cyclization of 9-biphen-2-ylheptadecan-9-ol is described. Polyfluorenes prepared by Yamamoto and Suzuki polymerization of the defect-free monomers, when incorporated in light-emitting devices, exhibited minimal green emission attributable to fluorenone formation. By contrast, devices fabricated with polyfluorene arising from conventionally synthesized 9,9-dioctyl-9H -fluorene showed significant emission at 533 nm, even at the turn-on voltage. Incorporation of as little as 0.06 mol % of 9-octyl-9H -fluorene comonomer in polyfluorene led to evolution of green fluorescence in the photoluminescence (PL) and electroluminescence (EL) emission spectra.

引用

页码：11910 / +

页数：3

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