• Login
    JavaScript is disabled for your browser. Some features of this site may not work without it.
    [The Carnot efficiency and plant photosystems]. 
    •   QMRO Home
    • School of Biological and Chemical Sciences
    • School of Biological and Chemical Sciences
    • [The Carnot efficiency and plant photosystems].
    •   QMRO Home
    • School of Biological and Chemical Sciences
    • School of Biological and Chemical Sciences
    • [The Carnot efficiency and plant photosystems].
    ‌
    ‌

    Browse

    All of QMROCommunities & CollectionsBy Issue DateAuthorsTitlesSubjectsThis CollectionBy Issue DateAuthorsTitlesSubjects
    ‌
    ‌

    Administrators only

    Login
    ‌
    ‌

    Statistics

    Most Popular ItemsStatistics by CountryMost Popular Authors

    [The Carnot efficiency and plant photosystems].

    View/Open
    Published Version
    Embargoed until: 2100-01-01
    Reason: VoR
    Volume
    59
    Pagination
    282 - 289
    Journal
    Biofizika
    Issue
    2
    ISSN
    0006-3029
    Metadata
    Show full item record
    Abstract
    The concept that the Carnot efficiency places an upper limit of 0.60-0.75 on the thermodynamic efficiency of photosynthetic primary photochemistry is examined using the PSI-LHCI preparation. The maximal quantum efficiency was determined approximately 0.99 which yielded a thermodynamic efficiency of 0.96, a value far above that predicted on the basis of the Carnot efficiency. The commonly presented reasoning leading to the Carnot efficiency idea was therefore critically examined. It is concluded that the crucial assumption that the pigment system, under illumination, is in equilibrium with the incident light field, at a black body temperature of Tr, is erroneous, as the temperature of the excited state pigments was experimentally shown to be that of the sample solvent (thermal bath), 280 K in this case. It is concluded that the classical reasoning used to describe the thermodynamics of heat systems is not applicable to "photonic" systems such as plant photosystems.
    Authors
    Jennings, RC; Santabarbara, S; Belgio, E; Zucchelli, G
    URI
    http://qmro.qmul.ac.uk/xmlui/handle/123456789/6062
    Collections
    • School of Biological and Chemical Sciences [1659]
    Language
    rus
    Copyright statements
    © Pleiades Publishing, Inc. 2014
    Twitter iconFollow QMUL on Twitter
    Twitter iconFollow QM Research
    Online on twitter
    Facebook iconLike us on Facebook
    • Site Map
    • Privacy and cookies
    • Disclaimer
    • Accessibility
    • Contacts
    • Intranet
    • Current students

    Modern Slavery Statement

    Queen Mary University of London
    Mile End Road
    London E1 4NS
    Tel: +44 (0)20 7882 5555

    © Queen Mary University of London.