Escudero D, Duchemin I, Blase X, Jacquemin D. Modeling the Photochrome-TiO
2 Interface with Bethe-Salpeter and Time-Dependent Density Functional Theory Methods.
J Phys Chem Lett 2017;
8:936-940. [PMID:
28178780 DOI:
10.1021/acs.jpclett.7b00015]
[Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Hybrid organic-inorganic semiconductor systems have important applications in both molecular electronics and photoresponsive materials. The characterizations of the interface and of the electronic excited-states of these hybrid systems remain a challenge for state-of-the-art computational methods, as the systems of interest are large. In the present investigation, we present for the first time a many-body Green's function Bethe-Salpeter investigation of a series of photochromic molecules adsorbed onto TiO2 nanoclusters. On the basis of these studies, the performance of time-dependent density functional theory (TD-DFT) calculations is assessed. In addition, the photochromic properties of different hybrid systems are also evaluated. This work shows that qualitatively different conclusions can be reached with TD-DFT relying on various exchange-correlation functionals for such organic-inorganic interfaces and paves the way to more accurate simulation of many hybrid materials.
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