Solvent Effects on Photoinduced Electron-Transfer Reactions

Article abstract of DOI:10.1021/j100148a019

Dependence of the fluorescence-quenching rate constant k_q, effective quenching distance r_q, and free radical yield Φ_R on the free enthalphy change ΔG_f of full electron transfer has been studied in dichloromethane by using anthracenecarbonitrile as electron-accepting fluorescers and amino- and methoxybenzenes as electron-donating quenchers.On the basis of the present data in dichloromethane and the previous data in acetonitrile, the solvent effects on the electron-transfer fluorescence-quenching mechanism and on the back electron-transfer reaction within the geminate radical ion pairs are elucidated.