Positive Charge Transfer in Mixed Alkane Glasses

Article abstract of DOI:10.1021/j100226a017

Positive charge transfer between the initial cation and the solute has been reexamined in detail at 6 and 72 K for 3-methyloctane (3MO) glasses containing squalane (SQ).A good fit to the observed decay of the 3-methyloctane cation (3MO⁺) was obtained by using the tunneling expression.The binding energy calculated, B = 0.33 eV, does not agree with the electron tunneling model.The results are discussed in terms of alternate tunneling mechanisms.The positive charge transfer 3MO⁺ = SQ ->3MO = SQ⁺ was separated kinetically from all other reactions, and the ratio ε_max(SQ⁺)/ε_max(3MO⁺) = 1.6 was calculated, in good agreement with an independent determination made by using pyrene (Py) as a cation scavenger.Positive charge transfer was also examined in several mixed alkane systems.