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.
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页码：11910 / +
页数：3
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