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Mikael Andersson, Louise E. Sinks, Ryan T. Hayes, Yongyu Zhao and Michael R. Wasielewski Bio-Inspired Optically Controlled Ultrafast Molecular AND Gate Angewandte Chemie International Edition 42

Version of Record online: 10 JUL 2003 | DOI: 10.1002/anie.200351488

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A fast switch: A covalent molecular tetrad (see picture), consisting of two electron donor/acceptor pairs acts as a high-speed molecular AND gate when it is sequentially excited using laser pulses having two different wavelengths. This system of using two sequential photodriven electron transfers is analogous to photosystems I and II in green plants which act in series to separate charge for long periods of time.

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