Acene-linked conjugated polymers with ratiometric fluorescent response to 1O2

Jingjing Zhang1, Syena Sarrafpour, Robert H Pawle

  • 1Tufts University Department of Chemistry, 62 Talbot Avenue, Medford, MA 02155, USA.

Chemical Communications (Cambridge, England)
|February 9, 2011
PubMed

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Aryldiazonium Salts to Azo Dyes: Diazo Coupling01:11

Aryldiazonium Salts to Azo Dyes: Diazo Coupling

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.