Redox Photocatalysis with Water-Soluble Core鈥揝hell CdSe-ZnS Quantum Dots

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• 作者：Timoth茅e Chauvir茅 ; Jean-Marie Mouesca ; Didier Gasparutto ; Jean-Luc Ravanat ; Colette Lebrun ; Marina Gromova ; Pierre-Henri Jouneau ; J茅r么me Chauvin ; Serge Gambarelli ; Vincent Maurel
• 刊名：Journal of Physical Chemistry C
• 出版年：2015
• 出版时间：August 6, 2015
• 年：2015
• 卷：119
• 期：31
• 页码：17857-17866
• 全文大小：578K
• ISSN：1932-7455

文摘

The use of CdSe-ZnS type I quantum dots as redox photocatalysts with visible light in water is investigated by monitoring the oxidation reaction of 8-oxo-2鈥?deoxyguanosine and the reduction of nitrophenylalanine derivatives. The detection of reaction intermediates and the identification and quantitation of reaction products establish that both reactions are photocatalyzed simultaneously by CdSe-ZnS type I quantum dots. The photocatalyzed reactions are observed without the need for sacrificial reactants and with high turnover numbers (>400). These results demonstrate that CdSe-ZnS type I quantum dots can work efficiently as redox photocatalysts in water solution.