Chemistry Physical organic chemistry


16 May 2023
Researchers at Osaka University discovered a new class of photo-responsive crystal compounds, heteroaromatic 1,2-diketones. Certain light irradiation causes the crystals in these materials to melt, dramatically changing the materials’ properties. One member of this class, SO, shows luminescent changes while melting, which enabled the research team to visualize the crystal-melting process at the molecular level. These findings provide fundamental insights into the mechanisms behind crystal melting and will enable future designs of light-responsive materials.
23 May 2022
Tetraphenylammonium, with all four hydrogens of ammonium (NH4+) replaced with benzene rings, has neither been discovered in nature nor chemically synthesized, calling into question whether it could exist. Here, we succeeded in synthesizing tetraphenylammonium for the first time, demonstrating its stable existence. The synthetic strategy used in this study, radical coupling, may be applicable to the synthesis of various related ammoniums with high structural novelty.
10 Mar 2022
Researchers at Kanazawa University report in Proceedings of the National Academy of Sciences a responsive molecular system that, through chemical reactions, inverses its chirality before becoming racemic.
10 Dec 2020
A polymer electrode gets an electrical boost for use in E-skin devices.


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Associate Prof. Yusuke Ishigaki is a chemist at Hokkaido University, Japan. He works on the creation of fundamental chemistry based on original molecular design.

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