Chemical Zeno effect—A new mechanism of spin catalysis in radical triads

Abstract

It has been shown that, in radical triads ((Ṙ 1 , Ṙ 2 ), Ṙ 3 ), spin-selective recombination of the (Ṙ 2 , Ṙ 3 ) radical pair is able to stimulate spin conversion and catalyze spin-selective recombination of the (Ṙ 1 , Ṙ 2 ) radical pair. Spin evolution of the (Ṙ 1 , Ṙ 2 ) radical pair can occur even in the absence of magnetic, hyperfine, and exchange interactions.