Ergodicity, configurational entropy and free energy in pigment solutions and plant photosystems: Influence of excited state lifetime (Articolo in rivista)

Type

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

Label

• Ergodicity, configurational entropy and free energy in pigment solutions and plant photosystems: Influence of excited state lifetime (Articolo in rivista) (literal)

Anno

• 2014-01-01T00:00:00+01:00 (literal)

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

• 10.1016/j.bpc.2014.01.002 (literal)

Alternative label

• Jennings, Robert C.; Zucchelli, Giuseppe (2014)
  Ergodicity, configurational entropy and free energy in pigment solutions and plant photosystems: Influence of excited state lifetime
  in Biophysical chemistry (Print)
  (literal)

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

• Jennings, Robert C.; Zucchelli, Giuseppe (literal)

Pagina inizio

• 29 (literal)

Pagina fine

• 32 (literal)

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

• 187 (literal)

Rivista

• Biophysical chemistry (Rivista)

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

• 4 (literal)

Note

• ISI Web of Science (WOS) (literal)

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

• Consiglio Nazionale delle Ricerche (CNR); University of Milan (literal)

Titolo

• Ergodicity, configurational entropy and free energy in pigment solutions and plant photosystems: Influence of excited state lifetime (literal)

Abstract

• We examine ergodicity and configurational entropy for a dilute pigment solution and for a suspension of plant photosystem particles in which both ground and excited state pigments are present. It is concluded that the pigment solution, due to the extreme brevity of the excited state lifetime, is non-ergodic and the configurational entropy approaches zero. Conversely, due to the rapid energy transfer among pigments, each photosystem is ergodic and the configurational entropy is positive. This decreases the free energy of the single photosystem pigment array by a small amount. On the other hand, the suspension of photosystems is non-ergodic and the configurational entropy approaches zero. The overall configurational entropy which, in principle, includes contributions from both the single excited photosystems and the suspension which contains excited photosystems, also approaches zero. Thus the configurational entropy upon photon absorption by either a pigment solution or a suspension of photosystem particles is approximately zero. (C) 2014 Elsevier E.V. All rights reserved. (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)
• ROBERT JENNINGS (Unità di personale esterno)

Insieme di parole chiave

• Keywords of "Ergodicity, configurational entropy and free energy in pigment solutions and plant photosystems: Influence of excited state lifetime" (Insieme di parole chiave)

Incoming links:

Autore CNR di

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

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

• Biophysical chemistry (Rivista)

Insieme di parole chiave di

• Keywords of "Ergodicity, configurational entropy and free energy in pigment solutions and plant photosystems: Influence of excited state lifetime" (Insieme di parole chiave)