The Carnot Efficiency and Plant Photosystems (Articolo in rivista)

Type

• Articolo in rivista (Classe)
• Prodotto della ricerca (Classe)

Label

• The Carnot Efficiency and Plant Photosystems (Articolo in rivista) (literal)

Anno

• 2014-01-01T00:00:00+01:00 (literal)

Alternative label

• Jennings, R. C.; Santabarbara, S.; Belgio, E.; Zucchelli, G. (2014)
  The Carnot Efficiency and Plant Photosystems
  in Biofizika
  (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori

• Jennings, R. C.; Santabarbara, S.; Belgio, E.; Zucchelli, G. (literal)

Pagina inizio

• 282 (literal)

Pagina fine

• 289 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume

• 59 (literal)

Rivista

• Biofizika (Rivista)

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• 8 (literal)

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• 2 (literal)

Note

• SI Web of Science (WOS) (literal)

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• Istituto di Biofisica CNR (literal)

Titolo

• The Carnot Efficiency and Plant Photosystems (literal)

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 approximate to 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 T-r, 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. (literal)

Prodotto di

• Bioenergetica e Biologia molecolare delle piante (MD.P01.005.001) (Modulo)
• Istituto di biofisica (IBF) (Istituto)

Autore CNR

• GIUSEPPE ZUCCHELLI (Unità di personale interno)
• STEFANO SANTABARBARA (Persona)
• ROBERT JENNINGS (Unità di personale esterno)

Incoming links:

Autore CNR di

• GIUSEPPE ZUCCHELLI (Unità di personale interno)
• ROBERT JENNINGS (Unità di personale esterno)
• STEFANO SANTABARBARA (Persona)

Prodotto

• Istituto di biofisica (IBF) (Istituto)
• Bioenergetica e Biologia molecolare delle piante (MD.P01.005.001) (Modulo)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#rivistaDi

• Biofizika (Rivista)