Dithienothiophene (DTT)-Based Dyes for Dye-Sensitized Solar Cells: Synthesis of 2,6-Dibromo-DTT

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• 作者：Tae-Hyuk Kwon ; Vanessa Armel ; Andrew Nattestad ; Douglas R. MacFarlane ; Udo Bach ; Samuel J. Lind ; Keith C. Gordon ; Weihua Tang ; David J. Jones ; Andrew B. Holmes
• 刊名：Journal of Organic Chemistry
• 出版年：2011
• 出版时间：May 20, 2011
• 年：2011
• 卷：76
• 期：10
• 页码：4088-4093
• 全文大小：815K
• 年卷期：v.76,no.10(May 20, 2011)
• ISSN：1520-6904

文摘

A one-pot synthesis of 2,6-dibromodithieno[3,2-b;2鈥?3鈥?i>-d]thiophene (dibromo-DTT, 4) was developed. A key step was bromodecarboxylation of DTT-2,6-dicarboxylic acid, obtained by saponification of the diester 1. The donor鈥揳cceptor dye DAHTDTT (13), based on a central 2,6-bis[2鈥?(3鈥?hexylthienyl)]dithieno[3,2-b;2鈥?3鈥?i>-d]thiophene core (9), was prepared and incorporated in a dye-sensitized solar cell (DSC), which exhibited an energy conversion efficiency of 7.3% with V_oc of 697 mV, J_sc of 14.4 mA/cmp>2p>, and ff of 0.73 at 1 sun.