Theoretical Study of the Triplet Excited State of PtPOP and the Exciplexes M-PtPOP (M=Tl, Ag) in Solution and Comparison with Ultrafast X-ray Scattering Results

Qingyu Kong, Kasper S. Kjær, Kristoffer Haldrup, Stephan P. A. Sauer, Tim Brandt van Driel, Morten Christensen, Martin Meedom Nielsen, Michael Wulff

11 Citationer (Scopus)

Abstract

The [Pt 2(H 2P 2O 5) 4] 4- ions in the ground and excited states and the excited-state complexes M-[Pt 2(H 2P 2O 5) 4] 3- and M 2-[Pt 2(H 2P 2O 5) 4] 2- (M = Ag, Tl) were studied in solution with various density functional theory (DFT) functionals from Gaussian 09 and Amsterdam Density Functional (ADF) programs. Calculated results were compared with ultrafast X-ray solution scattering data. Time dependent DFT (TD-DFT) calculations with the B3PW91 functional and unrestricted open shell calculations with the mPBE functional produce good agreement with the experimental results. Compared to gas phase calculations, the surrounding solvent is found to play an important role to shorten the Pt-Pt and M-Pt (M = Ag, Tl) bond lengths, lowering the molecular orbital energies and influences the molecular orbital transitions upon excitation, which stabilizes the excited transient molecules in solution.

OriginalsprogEngelsk
TidsskriftChemical Physics
Vol/bind393
Udgave nummer1
Sider (fra-til)117–122
ISSN0301-0104
DOI
StatusUdgivet - 17 jan. 2012

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