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Updated: May 12, 2026

Synthesis of pH Dependent Pyrazole, Imidazole, and Isoindolone Dipyrrinone Fluorophores using a Claisen-Schmidt Condensation Approach
Published on: June 10, 2021
A three-dimensional assembly of pyrene dye on a tetraphenylethane scaffold enhances fluorescence quantum yield
Kentaro Sumi1, Yosuke Niko, Katsumi Tokumaru
1Department of Organic and Polymeric Materials, Tokyo Institute of Technology, 2-12-1-H-134 O-okayama, Tokyo 152-8552, Japan.
Abstract:
A three-dimensional pyrene assembly on a tetraphenylethane skeleton enhanced the fluorescence quantum yield compared to the yield obtained when using monomeric species, without changing the shape of the emission spectrum. The unique spacing of the pyrene units may prevent intramolecular fluorescence quenching or non-radiative decay.
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