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Updated: Jun 27, 2025

Synthesis of pH Dependent Pyrazole, Imidazole, and Isoindolone Dipyrrinone Fluorophores using a Claisen-Schmidt Condensation Approach
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Tetrakispyrazolylethene: Protonation-Induced Emission

Yuta Takemasa1, Kyoko Nozaki1

  • 1Department of Chemistry and Biotechnology, Graduate School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan.

The Journal of Organic Chemistry
|May 2, 2024
PubMed
Summary

Tetrakispyrazolylethene was synthesized and showed increased emission in solid and aqueous solutions. This enhanced luminescence is due to crystal packing and protonation, not aggregation.

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