Nina Hagmeyer, Daniel Costabel, Elisabeth Hofmeister, Afshin Nabiyan, Johannes Max, Felix H. Schacher, Kalina Peneva, Benjamin Dietzek-Ivanšić
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引用次数: 0
Abstract
The use of organic molecules as photosensitizers in photoredox catalysis is an attractive research field as it has the potential to replace conventionally used photosensitizers, which are based on rare metals. In the context of light-driven hydrogen evolution catalysis, the radical formation of two perylene monoimide dyes (PMIs) was studied by means of electron paramagnetic resonance (EPR) and UV/Vis spectroscopy. The PMIs were reduced and oxidized both photochemically and electrochemically to study the changes in absorption and EPR signature. A distinct differentiation between the two PMIs as well as a comparison between the oxidative and reductive processes can be made by EPR measurements. UV/Vis measurements showed different features under redox conditions. This study addresses a gap in understanding the radical intermediate formation during photocatalytic processes.
ChemPhotoChemChemistry-Physical and Theoretical Chemistry
CiteScore
5.80
自引率
5.40%
发文量
165
期刊介绍：
Light plays a crucial role in natural processes and leads to exciting phenomena in molecules and materials. ChemPhotoChem welcomes exceptional international research in the entire scope of pure and applied photochemistry, photobiology, and photophysics. Our thorough editorial practices aid us in publishing authoritative research fast. We support the photochemistry community to be a leading light in science.
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