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Kun Li, Mei Wang, Jin Wang, Rongrong Zhu, Dongmei Sun, Xiaoyu Sun and Shi-Long Wang Photoionization of Oxidized Coenzyme Q in Microemulsion: Laser Flash Photolysis Study in Biomembrane-like System Photochemistry and Photobiology 89

Article first published online: 18 JUN 2012 | DOI: 10.1111/j.1751-1097.2012.01180.x

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In microemulsion, CoQ10 undergoes photoionization via a monophotonic process to generate neutral radical of CoQ10 (CoQ10) and hydrated electrons (eaq). However, duroquinone (DQ) experiences photoexcitation to generate excited triplet state (3DQ*), which is followed by hydrogen-abstraction reaction of 3DQ* from 1-butonal. Photoexcitation of CoQ0 in microemulsion not only leads to excited state-involved hydrogen-abstraction reaction but also the formation of hydrated electrons. In term of the difference of molecular structure, related mechanism is discussed to explain the different photochemistry of the three benzoquinone derivatives.

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