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The Direct Conversion of Light into Continuous Mechanical Energy by Photoreversible Self-Assembly: A Prototype of a Light-Powered Engine

Authors

  • Stefano Masiero Prof.,

    1. Alma Mater Studiorum-Università di Bologna, Dipartimento di Chimica Organica “A. Mangini”, Via San Giacomo 11, 40126 Bologna, Italy, Fax: (+39) 051-2099-5688
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  • Stefano Lena Dr.,

    1. Alma Mater Studiorum-Università di Bologna, Dipartimento di Chimica Organica “A. Mangini”, Via San Giacomo 11, 40126 Bologna, Italy, Fax: (+39) 051-2099-5688
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  • Silvia Pieraccini Dr.,

    1. Alma Mater Studiorum-Università di Bologna, Dipartimento di Chimica Organica “A. Mangini”, Via San Giacomo 11, 40126 Bologna, Italy, Fax: (+39) 051-2099-5688
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  • Gian Piero Spada Prof.

    1. Alma Mater Studiorum-Università di Bologna, Dipartimento di Chimica Organica “A. Mangini”, Via San Giacomo 11, 40126 Bologna, Italy, Fax: (+39) 051-2099-5688
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  • We thank Profs. G. Gottarelli and C. Zannoni (Bologna) for helpful discussions and suggestions. Thanks are also due to Dr. M. A. Cremonini and Prof. G. Placucci for their kind hospitality at the NMR facility, Campus di Scienze degli Alimenti (Forlì-Cesena). Technical assistance by G. Gnudi (F.A.V.S. Scientific Glassworks, Bologna) is gratefully acknowledged. Financial support was provided by MiUR (PRIN Projects) and the University of Bologna.

Abstract

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En route to a clean engine: The concentration of a chemical system containing an azobenzene derivative can be varied cyclically by light, and this variation has been exploited to produce continuous work. The cyclic concentration change of the system is the result of a light-controlled self-assembly/disassembly process.

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