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Modified triphenylamine-dicyanovinyl-based donor-acceptor dyes with enhanced power conversion efficiency of p-type

Linna Zhu1, Hongbin Yang, Cheng Zhong

  • 1School of Chemical and Biomedical & Center for Advanced Bionanosystems, Nanyang Technological University, 70 Nan-yang Drive, Singapore 637457, Singapore.

Chemistry, an Asian Journal
|June 30, 2012
PubMed

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The reaction of weakly electrophilic aryldiazonium (also called arenediazonium) salts with highly activated aromatic compounds leads to the formation of products with an —N=N— link, called an azo linkage. This reaction, presented in Figure 1, is known as diazo coupling and occurs without the loss of the nitrogen atoms of the aryldiazonium salt. Highly activated aromatic compounds such as phenols or arylamines favor the diazo coupling reaction. The coupling generally occurs at the para position.