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Title: Electronic Couplings for Resonance Energy Transfer from CCSD Calculations: From Isolated to Solvated Systems
Author: Caricato, Marco
Curutchet Barat, Carles E.
Mennucci, Benedetta
Scalmani, Giovanni
Keywords: Transferència d'energia
Química quàntica
Complexitat computacional
Energy transfer
Quantum chemistry
Computational complexity
Issue Date: 10-Nov-2015
Publisher: American Chemical Society
Abstract: Quantum mechanical (QM) calculations of electronic couplings provide great insights for the study of resonance energy transfer (RET). However, most of these calculations rely on approximate QM methods due to the computational limitations imposed by the size of typical donor-acceptor systems. In this work, we present a novel implementation that allows computing electronic couplings at the coupled cluster singles and doubles (CCSD) level of theory. Solvent effects are also taken into account through the polarizable continuum model (PCM). As a test case, we use a dimer of indole, a common model system for tryptophan, which is routinely used as an intrinsic fluorophore in Förster resonance energy transfer studies. We consider two bright π → π* states, one of which has charge transfer character. Lastly, the results are compared with those obtained by applying TD-DFT in combination with one of the most popular density functionals, B3LYP.
Note: Versió postprint del document publicat a:
It is part of: Journal of Chemical Theory and Computation, 2015, vol. 11, num. 11, p. 5219-5228
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ISSN: 1549-9618
Appears in Collections:Articles publicats en revistes (Farmàcia, Tecnologia Farmacèutica i Fisicoquímica)

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