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Updated: Jun 15, 2025

A Novel Technique for Generating and Observing Chemiluminescence in a Biological Setting
Published on: March 9, 2017
Effects of a central element on the photoluminescence properties of β-diketiminate complexes composed of group 13
Shunichiro Ito1, Kazuo Tanaka1, Yoshiki Chujo1
1Department of Polymer Chemistry, Graduate School of Engineering, Kyoto University, Katsura, Nishikyo-ku, Kyoto 615-8510, Japan. tanaka@poly.synchem.kyoto-u.ac.jp.
Abstract:
Various kinds of boron complexes have been utilized as functional luminescent materials. However, only a limited number of emissive complexes containing other group 13 elements have been reported. Herein, we report the synthesis and optical properties of luminescent β-diketiminate complexes containing a series of group 13 elements. The synthesized complexes exhibited crystallization-induced emission properties. It was indicated that the heavier group 13 elements accelerate intersystem crossing from the singlet to the triplet excited state because of the strong heavy atom effect. Finally, we discovered that aluminum and gallium complexes can work as solid-state luminescent materials with high emission efficiencies.
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