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Home NEWS Science News Chemistry

Shining light on similar crystals reveals photoreactions can differ

by
July 26, 2024
in Chemistry
Reading Time: 2 mins read
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A rose by any other name is a rose, but what of a crystal? Osaka Metropolitan University-led researchers have found that single crystals of four anthracene derivatives with different substituents react differently when irradiated with light, perhaps holding clues to how we can use such materials in functional ways.

Color change during light irradiation of the entire crystal

Credit: Osaka Metropolitan University

A rose by any other name is a rose, but what of a crystal? Osaka Metropolitan University-led researchers have found that single crystals of four anthracene derivatives with different substituents react differently when irradiated with light, perhaps holding clues to how we can use such materials in functional ways.

Graduate student Sogo Kataoka, Dr. Daichi Kitagawa, a lecturer, and Professor Seiya Kobatake of the Graduate School of Engineering and colleagues compared the photoreactions of the single crystals when the entire anthracene crystal was irradiated with light.

For two of the anthracene derivatives, the photoreaction proceeds uniformly throughout the crystal. For the other two, the photoreaction proceeds non-uniformly from the edge to the center of the crystal. The research team also found that in non-uniform photoreactions, the molecules must rotate significantly during the process, so the reaction proceeds from the edge of the crystal where sufficient rotational space is available.

“If we can control the arrangement and reactivity of molecules in crystals based on the findings of this research, it will be possible to make reactions proceed in a spatially selective manner and induce photoreactions only at the desired location,” Dr. Kitagawa explained. “In the future, we aim to shine a light on more detailed factors by conducting 3D simulations and design functional materials that can exhibit arbitrary behavior.”

The findings were published in Chemical Science.

###

About OMU 

Established in Osaka as one of the largest public universities in Japan, Osaka Metropolitan University is committed to shaping the future of society through “Convergence of Knowledge” and the promotion of world-class research. For more research news, visit https://www.omu.ac.jp/en/ and follow us on social media: X, Facebook, Instagram, LinkedIn.



Journal

Chemical Science

DOI

10.1039/d4sc03060e

Method of Research

Experimental study

Subject of Research

Not applicable

Article Title

Relationship between spatially heterogeneous reaction dynamics and photochemical kinetics in single crystals of anthracene derivatives

Article Publication Date

26-Jul-2024

COI Statement

There are no conflicts to declare.

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