Linear and Cyclic Porphyrin Hexamers as Near-Infrared Emitters in Organic Light-Emitting Diodes

被引：103

作者：

Fenwick, Oliver ^{[2
,3
]}

Sprafke, Johannes K. ^{[1
]}

Binas, Jonathan ^{[2
,3
]}

Kondratuk, Dmitry V. ^{[1
]}

Di Stasio, Francesco ^{[2
,3
]}

Anderson, Harry L. ^{[1
]}

Cacialli, Franco ^{[2
,3
]}

机构：

[1] Univ Oxford, Dept Chem, Chem Res Lab, Oxford OX1 3TA, England

[2] UCL, Dept Phys & Astron, London WC1E 6BT, England

[3] UCL, London Ctr Nanotechnol, London WC1E 6BT, England

来源：

NANO LETTERS | 2011年 / 11卷 / 06期

基金：

英国工程与自然科学研究理事会;

关键词：

Porphyrin; OLED; organic electronics; IR; near-infrared; ENERGY-GAP LAW; CONJUGATED POLYROTAXANES; EFFICIENCY CALCULATIONS; OPTICAL SPECTROSCOPY; MOLECULAR WIRES; MU-M; ELECTROLUMINESCENCE; EMISSION; SEMICONDUCTORS; DEVICES;

D O I：

10.1021/nl2008778

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Here we report organic light-emitting diodes incorporating linear and cyclic porphyrin hexamers which have red-shifted emission (lambda(PL) = 873 and 920 nm, respectively) compared to single porphyrin rings as a consequence of their extended pi-conjugation. We studied the photoluminescence and electroluminescence of blends with poly(9,9'-dioctylfluorene-alt-benzothiadiazole), demonstrating a high photoluminescence quantum efficiency of 7.7% for the linear hexamer when using additives to prevent aggregation and achieving high color purity near-infrared electroluminescence.

引用

页码：2451 / 2456

页数：6

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