The almost planar conformations of the former appear to strengthen both π-electrons conjugation and electronic coupling between low-lying unoccupied molecular orbitals of the azo dyes and the conduction band of TiO2.
The Marcus theory of electron transfer implies rather weak (<0.05 eV) electronic coupling between the initial (locally excited (LE)) and final (ET) states, and presumes that the transition state is close to the crossing point of the LE and CT terms.
First, it provides a formula for the pre-exponential factor in the Arrhenius equation, based on the electronic coupling between the initial and final states of the electron-transfer reaction (i.e., the overlap of the electronic wave functions of the two states).
A formula for the pre-exponential factor in the Arrhenius equation, based on the electronic coupling between the initial and final state of the electron transfer reaction (i.e., the overlap of the electronic wave functions of the two states), is provided.
The Marcus theory of ET-process suggests rather weak electronic coupling between the initial (LE) and final (ET), locally excited and electron transfer states, respectively.
It is proposed this adsorption causes an increase in electronic coupling between the redox species and the silicon electrode such that appreciable electron transfer through the monolayer was achieved.
At R = Rt, the electronic dynamics is governed by a symmetric double-well potential and the electron tunneling occurs with a transition probability proportional to the square of the electronic coupling between the I and F states.
Voiry, D. et al. The role of electronic coupling between substrate and 2D MoS2 nanosheets in electrocatalytic production of hydrogen.
Fair additivity of the LH1 and RC absorption spectra suggests rather weak electronic coupling between them.
The electronic coupling between these side groups and the central aromatic core is weak due to the large dihedral angle (∼110°) between them.
This is related to a different electronic coupling between the molecules and the electrodes.
