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Updated: Mar 10, 2026

Synthesis of pH Dependent Pyrazole, Imidazole, and Isoindolone Dipyrrinone Fluorophores using a Claisen-Schmidt Condensation Approach
Published on: June 10, 2021
Intramolecular Electronic Coupling in the Thiophene-Bridged Carbazole-Based Diporphyrin
Chihiro Maeda1, Mototsugu Takata1, Asami Honsho1
1Division of Applied Chemistry, Graduate School of Natural Science and Technology, Okayama University , Tsushima, Okayama 700-8530, Japan.
Abstract:
The Glaser coupling reaction of ethynyl-substituted carbazole-based isophlorins provided butadiyne-bridged dimers, which were transformed into the thiophene-bridged dimers via the annulation reaction. Oxidation of these isophlorin dimers afforded carbazole-based diporphyrins. Notable electronic interactions in the diporphyrins have been confirmed by means of UV/vis-near-infrared (NIR) absorption spectroscopy, cyclic voltammetry (CV) measurements, and density functional theory (DFT) calculations.
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