Abstract
Covalent functionalization of a ZnO nanocluster with thiophene molecule was studied by means of density functional theory calculations. The obtained results show that the molecule is physically adsorbed on the surface of nanocluster with adsorption energies in the range of −0.33 to −0.42 eV. In this study, 2η-C4H4S–Zn12O12 cluster is the most stable adsorption among all thiophene adsorption configurations. Accordingly, HOMO–LUMO energy gap of the nano-cluster is changed about 0.24 to 0.72 % using the DFT calculations. The values of charge transfer shows that π-back bonding exists for 2η and 5η bonding modes. Present results might be helpful to provide an effective way to modify the Zn12O12 properties for further applications such as generation of the new hybrid compounds.
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