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Visible light intensity dependent negative photochromism of a binaphthyl-bridged phenoxyl-imidazolyl radical complex

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Abstract

We herein report a novel biphotochromic molecule composed of two fast negative photochromic phenoxyl-imidazolyl radical complex units showing incident light intensity dependence of the photochemical reaction. The electronic coupling between the two fast negative photochromic units gives a non-linear photoresponse; weak- and intense-visible light irradiation proceed the one-photon and two-photon photochemical reactions, respectively. The solution of the stepwise negative photochromic molecule changes to colorless only by excitation with intense visible light.

Graphical abstract: Visible light intensity dependent negative photochromism of a binaphthyl-bridged phenoxyl-imidazolyl radical complex

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Publication details

The article was received on 03 Dec 2018, accepted on 07 Jan 2019 and first published on 07 Jan 2019


Article type: Communication
DOI: 10.1039/C8CC09591D
Citation: Chem. Commun., 2019, Advance Article
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    Visible light intensity dependent negative photochromism of a binaphthyl-bridged phenoxyl-imidazolyl radical complex

    I. Yonekawa, K. Mutoh and J. Abe, Chem. Commun., 2019, Advance Article , DOI: 10.1039/C8CC09591D

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