In such hybrid structures localized orbitals of surface-attached ligands, are electronically coupled with the delocalized electron levels from the conduction band of a TiO2 semiconductor [16].
Then, the dispersive interactions between the delocalized π-electrons on the surface of activated carbons and the free electrons of the dye molecule present in aromatic rings play a dominant role in the adsorption mechanism.
The localized polaron transition P1 and the delocalized polaron transition DP1 with energies 0.37 and 0.06 eV, respectively, were investigated elsewhere [5] but are outside the probed energy range in our study.
A formation and decay of a charge transfer excited state between the delocalized π electrons of the carbon linker and the Si core excitons were proposed to interpret one-photon excitation.
The adsorption of the reactive dye on carbon is favored, mainly due to the dispersive interactions between the delocalized π electrons of the carbon materials and the free electrons of the dye molecules [20].
With respect to non-specific or dispersive interactions, the HC turbostratic structure formed as a result of the precursor thermal treatment will favour adsorption by non-specific П П interactions between the delocalized electrons found on the edges of the carbon layers and the benzene rings of the adsorbate [24].
This oxidation or reduction charges the polymer positively or negatively, respectively, by removing or injecting some of the delocalized electrons.
These included contacts from QacR residues E90 and E120 to the two dimethylamino groups of MG, at which the delocalized positive charge largely rests.
The delocalized energy level was estimated by UV Vis.
Thearrows P1and P2representhehe localized polarons whereas the DP1and DP2representhehe delocalized polarons, respectively.
Such small energy difference indicates that the delocalized cluster geometry varies easily under certain thermal fluctuations.
