期刊
PHOTOCHEMICAL & PHOTOBIOLOGICAL SCIENCES
卷 5, 期 1, 页码 116-121出版社
SPRINGERNATURE
DOI: 10.1039/b511269a
关键词
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One electron reduction of N-alkyl-4-picolinium ( NAP) esters initiates C-O bond scission releasing a carboxylate anion. Previous experiments have demonstrated that this process can be initiated by photoinduced electron transfer from an electron-donating sensitizer. In the present study it is demonstrated that a comparable photorelease process can be initiated by photolysis of an electron acceptor ( mediator), which in turn abstracts an electron from a ground state electron donor. The resulting mediator anion radicals donate an electron to the NAP ester, triggering release of the carboxylate anion. It is demonstrated that when benzophenone is used as a mediator, higher quantum yields for ester decomposition can be achieved compared with sensitizers that do direct photoinduced electron transfer.
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