Pioneering and Developing Exciplex Chemistry Part 3

Energy Gap Dependences of Electron Transfer Reactions and Their Roles as well as Roles of Solvent Dependent Exciplex Structures which are of Crucial Importance for Organic Photochemical Reaction Mech

Abstract

A very broad and flat shape of the log k_cs vs. - Δ G_cs relation for the intermolecular electron transfer (ET) in the fluorescence quenching reaction in contrast to the bell-shaped log k_CR vs. - Δ G_CR relation of produced ¹LIP's (loose ion pairs) are discussed, leading to the mechanisms of the D, A distance distribution and formation of multiple IP states with different structures depending on the D, A interaction strength, solvation and - Δ G for ET. The solvent dependent structures and multiple states mechanisms derived here agree with the conclusions derived from the studies on exciplex phenomena as discussed in Part 2 and their roles of crucial importance in organic photochemical reactions are demonstrated.