Issue 11, 2019

Molecular design to increase the photosensitivity of photochromic phenoxyl–imidazolyl radical complexes

Abstract

Photochromic molecules have received a lot of interest in potential applications. The development of the phenoxyl–imidazolyl radical complex (PIC), which generates two nonequivalent radicals upon light irradiation along with the fast photochemical reaction, is crucial for photoresponsive materials. However, as a novel photochromic compound, the low photosensitivity of PIC derivatives has limited their practical applications. Herein, increased photosensitivity and absorption coefficients of PIC derivatives were achieved while keeping the thermal back reaction rate by introducing the substitution of aryl groups. This strategy gives significant insight into the development of desirable fast photochromic compounds based on the PIC framework.

Graphical abstract: Molecular design to increase the photosensitivity of photochromic phenoxyl–imidazolyl radical complexes

Supplementary files

Article information

Article type
Research Article
Submitted
17 7 2019
Accepted
09 9 2019
First published
10 9 2019

Mater. Chem. Front., 2019,3, 2380-2387

Molecular design to increase the photosensitivity of photochromic phenoxyl–imidazolyl radical complexes

R. Li, H. Arai, Y. Kobayashi, K. Mutoh and J. Abe, Mater. Chem. Front., 2019, 3, 2380 DOI: 10.1039/C9QM00468H

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