Excess electrons scavenging in n-dodecane solution: The role of tunneling of electron from its localized state to acceptor

The quenching of delayed radiofluorescence of n-dodecane solutions of N,N,N′,N′-tetramethyl-1,4-phenylenediamine by both electron acceptors and electric field was studied. The values of excess electron mobility and rate constants of electron scavenging by different acceptors were determined over the temperature range of 265–343 K. The data were analyzed with the theory of diffusion-controlled reactions with distant transfer of electron to an acceptor. Evidence was obtained that no enthalpy and entropy of activation were needed for the electron scavenging.