Viscosity effect on the CIDEP of laser photolysis of duroquinone in hydrogen-donor solvents |
| |
Authors: | Xinsheng Xu Lixia Jia Lei Shi Xuehan Ji Zhifeng Cui |
| |
Institution: | (1) Institute of Atomic and Molecular Physics, Anhui Normal University, 241000 Wuhu, People’s Republic of China |
| |
Abstract: | Chemically induced dynamic electron polarization (CIDEP) is one of the important research fields of dynamic spin chemistry.
In the present work, with ethylene glycol, 1,2-propanol and their mixtures with different ratios in volume as solvents and
duroquinone as photosensitive molecule, the influence of solvent viscosity on the CIDEP of photolyzed duroquinone radicals
has been studied experimentally. In each solvent, duroquinone neutral radicals are observed. Duroquinone neutral radicals
are generated through hydrogen transfer reaction from hydrogen-donor solvent molecules to excited duroquinone triplet. The
CIDEP mechanism is mainly triplet mechanism. The CIDEP intensity of duroquinone neutral radicals decreases with the increase
in the solvent viscosity, and the variation was rapid in low-viscosity range and slow in high-viscosity range. |
| |
Keywords: | |
本文献已被 SpringerLink 等数据库收录! |
|