Bonded Exciplexes. A New Concept in Photochemical Reactions

• Published in: Journal of organic chemistry Vol. 72; no. 18; pp. 6970 - 6981
• Main Authors: Wang, Yingsheng, Haze, Olesya, Dinnocenzo, Joseph P, Farid, Samir, Farid, Ramy S, Gould, Ian R
• Format: Journal Article
• Language: English
• Published: Washington, DC American Chemical Society 31.08.2007
• Subjects: Chemistry; Exact sciences and technology; Free radicals chemistry; General and physical chemistry; Heterocyclic compounds; Heterocyclic compounds with only one n hetero atom and condensed derivatives; Organic chemistry; Photochemistry; Physical chemistry of induced reactions (with radiations, particles and ultrasonics); Preparations and properties; Reactivity and mechanisms; Separation; Nitrogen heterocycle; Electron transfer; Ground state; Molecular interaction; Photochemical reaction; Pyridine derivatives; Characterization; Picosecond; Transfer reaction; Steric effect; Ion radical pair; Rate constant; Charge transfer; Interaction energy; Exciplex; Singlet state; Endothermic reaction; Microsecond; Free energy; Low energy; Organic free radical; Density functional method; Electron acceptor; Excited state

Charge-transfer quenching of the singlet excited states of cyanoaromatic electron acceptors by pyridine is characterized by a driving force dependence that resembles those of conventional electron-transfer reactions, except that a plot of the log of the quenching rate constants versus the free energ...