Strain and Huckel Aromaticity: Driving Forces for a Promising New Generation of Electron Acceptors in Organic Electronics

被引:271
作者
Brunetti, F. G. [1 ,2 ]
Gong, X. [2 ]
Tong, M. [2 ]
Heeger, A. J. [2 ]
Wudl, Fred [1 ,2 ]
机构
[1] Univ Calif Santa Barbara, Dept Chem & Biochem, Mat Res Lab, Santa Barbara, CA 93106 USA
[2] Univ Calif Santa Barbara, Ctr Polymers & Organ Solids, Santa Barbara, CA 93106 USA
关键词
dimerization; electron acceptors; organic electronics; polycycles; solar cells; OPEN-CIRCUIT VOLTAGE; POLYMER SOLAR-CELLS; RADICAL-ANION; 9,9-BIFLUORENYLIDENE; EFFICIENCIES; PERFORMANCE; DERIVATIVES; NETWORK; COMPLEX;
D O I
10.1002/anie.200905117
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
(Figure Presented) Straining at the leash: The main features of electron-accepting materials with a 9,9′-bifluorenylidene backbone are strain relief and a gain in aromaticity. These dimers (see picture) exhibit absorption near the red spectral region (ca. 600 nm) and HOMO (5.58-5.06 eV) and LUMO (3.37-3.09 eV) energy levels, which, together with high solubility and thermal stability render these materials attractive acceptors for bulk heterojunction (BHJ) solar cells. © 2010 Wiley-VCH Verlag GmbH & Co. KGaA.
引用
收藏
页码:532 / 536
页数:5
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