Bio-Inspired Optically Controlled Ultrafast Molecular AND Gate

Authors

  • Mikael Andersson,

    1. Department of Chemistry, Center for Nanofabrication and Molecular Self-Assembly, Northwestern University, Evanston, IL 60208-3113, USA, Fax: (+1) 847-467-1423
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  • Louise E. Sinks,

    1. Department of Chemistry, Center for Nanofabrication and Molecular Self-Assembly, Northwestern University, Evanston, IL 60208-3113, USA, Fax: (+1) 847-467-1423
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  • Ryan T. Hayes,

    1. Department of Chemistry, Center for Nanofabrication and Molecular Self-Assembly, Northwestern University, Evanston, IL 60208-3113, USA, Fax: (+1) 847-467-1423
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  • Yongyu Zhao,

    1. Department of Chemistry, Center for Nanofabrication and Molecular Self-Assembly, Northwestern University, Evanston, IL 60208-3113, USA, Fax: (+1) 847-467-1423
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  • Michael R. Wasielewski Prof.

    1. Department of Chemistry, Center for Nanofabrication and Molecular Self-Assembly, Northwestern University, Evanston, IL 60208-3113, USA, Fax: (+1) 847-467-1423
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  • M.A. gratefully acknowledges a postdoctoral grant from the Swedish Foundation for International Cooperation in Research and Higher Education. This work was supported by the US National Science Foundation.

Abstract

original image

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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