Please use this identifier to cite or link to this item: http://hdl.handle.net/10316/8237
Title: Temperature Dependence of Ultra-Exothermic Charge Recombinations13
Authors: Serpa, Carlos 
Gomes, Paulo J. S. 
Arnaut, Luis G. 
Melo, J. Seixas de 
Formosinho, Sebastião J. 
Issue Date: 2006
Citation: ChemPhysChem. 7:12 (2006) 2533-2539
Abstract: We measured the temperature dependence (from +32 to -50 °C) of charge-recombination rates between contact radical ion pairs in isopropyl ether. In the systems selected for this study, aromatic hydrocarbon cations are the electron acceptors and the fumaronitrile anion is the electron donor. Nearly quantitative electron transfers occur at all temperatures. The charge recombinations have excess exothermicities of -60 kcal mol-1 and exhibit a very weak temperature dependence. Our observations emphasize the absence of solvent effects and the relevance of nuclear tunneling in charge recombinations.
URI: http://hdl.handle.net/10316/8237
DOI: 10.1002/cphc.200600467
Rights: openAccess
Appears in Collections:FCTUC Química - Artigos em Revistas Internacionais

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