Dithienothiophene (DTT)-based dyes for dye-sensitized solar cells: synthesis of 2, 6-dibromo-DTT

…, V Armel, A Nattestad, DR MacFarlane…

Index: Kwon, Tae-Hyuk; Armel, Vanessa; Nattestad, Andrew; MacFarlane, Douglas R.; Bach, Udo; Lind, Samuel J.; Gordon, Keith C.; Tang, Weihua; Jones, David J.; Holmes, Andrew B. Journal of Organic Chemistry, 2011 , vol. 76, # 10 p. 4088 - 4093

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Citation Number: 50

Abstract

A one-pot synthesis of 2, 6-dibromodithieno [3, 2-b; 2′, 3′-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–acceptor dye DAHTDTT (13), based on a central 2, 6-bis [2′-(3′-hexylthienyl)] dithieno [3, 2-b; 2′, 3′-d] thiophene core (9), was prepared and incorporated in a dye-sensitized solar cell (DSC), which exhibited an ...