ESR lineshape analysis of the photoelectron e−photo and loose ion pair (RbKr+, e−)in THF

Light photolysis of a Rb-THF solution in the presence of cryptate, serving as a complexing agent, results in an ESR line-shape which strongly depends on the light intensity, attributed to a superposition of the photoelectron e − photo and the loose ion pair (Rb cryptate + , e − ). An analysis in terms of the radical pair mechanism is presented.