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Facile synthesis of tetraphenylpyrazine-based AIE molecules with distinguishable fluorescence for aging latent

Ping Yang1, Yuanlin Zhang1, Wen Liu1

  • 1School of Chemical and Blasting Engineering, Anhui University of Science and Technology, Huainan, Anhui 232001, China. pyang8066@163.com.

Chemical Communications (Cambridge, England)
|January 2, 2026
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...
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