Electron tunneling factor

The current form contains an electronic tunneling factor, t ), and a nuclear activation factor. Nuclear activation in aU the vibrational, protein conformational, and external solvent polarization modes, along with driving force effects, thus precedes the electronic transition, which occurs at the crossing between the potential surfaces of reactants and products (Figure 2.1). 

Electronic Tunneling Factor in Long-Range Interfacial (Bio)electrochemical Electron Transfer... 

All these areas are covered in a broad literature, overviewed, for example in refs. 24 and 25. We do not here address all these elements of molecular charge transfer theory. Instead we discuss the two central factors in the interfacial (bio)electrochemical electron transfer process, first the nuclear reorganization (free) energy and then the electronic tunneling factor. 

The electronic tunneling factor in long-range interfacial (bio)electrochemical electron transfer... 

Still another form of the electron tunneling factor can be recast in terms of the electrode-molecule electronic density overlap, M(ii), rather than electronic wave function overlap/ ... 

An additional test of the theory is given by the comparison of the data for different electrode materials. Experimentally the reduction of the same anion at different metals leads to quite different patterns for the polarization curve, in particular, a drastic variation of the interval in which the diffuse-layer minimum is observed. According to the theory (24), if the reacting species do not enter the compact layer and the possible change of the electron-tunneling factor does not influence the reaction rate (e.g. for adiabatic electrochemical reactions [58]) the corrected Tafel plots must be independent of the electrode material. This prediction has also been confirmed experimentally for the persulfate reduction at Hg (amalgams), Bi, Sn,... 

Electronic Tunnel Factors in Molecular Electron Tranter and Molecular Conduction 149... 

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