UNIGE document Scientific Article
previous document  unige:3617  next document
add to browser collection
Title

Hot recombination of photogenerated ion pairs

Authors
Gladkikh, Vladislav
Burshtein, Anatoly I.
Feskov, Serguei V.
Ivanov, Anatoly I.
Published in Journal of Chemical Physics. 2005, vol. 123, no. 24, p. 244510-244510
Abstract The recombination dynamics of ion pairs generated upon electron transfer quenching of perylene in the first singlet excited state by tetracyanoethylene in acetonitrile is quantitatively described by the extended unified theory of photoionization/recombination. The extension incorporates the hot recombination of the ion pair passing through the level-crossing point during its diffusive motion along the reaction coordinate down to the equilibrium state. The ultrafast hot recombination vastly reduces the yield of equilibrated ion pairs subjected to subsequent thermal charge recombination and separation into free ions. The relatively successful fit of the theory to the experimentally measured kinetics of ion accumulation/recombination and free ion yield represents a firm justification of hot recombination of about 90% of primary generated ion pairs.
Keywords Organic compoundsCharge exchangePhotoionisationReaction kinetics theoryEnergy level crossingMolecule-photon collisionsIon recombinationChemical equilibrium
Identifiers
Full text
Structures
Research group Groupe Vauthey
Citation
(ISO format)
GLADKIKH, Vladislav et al. Hot recombination of photogenerated ion pairs. In: Journal of Chemical Physics, 2005, vol. 123, n° 24, p. 244510-244510. https://archive-ouverte.unige.ch/unige:3617

197 hits

145 downloads

Update

Deposited on : 2009-10-02

Export document
Format :
Citation style :