Conservation of vibrational coherence in ultrafast electronic relaxation: The case of diplatinum complexes in solution

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388955%3A_____%2F17%3A00473712" target="_blank" >RIV/61388955:_____/17:00473712 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1016/j.cplett.2017.02.071" target="_blank" >http://dx.doi.org/10.1016/j.cplett.2017.02.071</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.cplett.2017.02.071" target="_blank" >10.1016/j.cplett.2017.02.071</a>

Result language
angličtina
Original language name
Conservation of vibrational coherence in ultrafast electronic relaxation: The case of diplatinum complexes in solution
Original language description
We report the results of ultrafast transient absorption studies of tetrakis(l-pyrophosphito) diplatinate(II), [Pt-2(mu-P(2)O(5)H2)(4)](4) (Pt(pop)) and its perfluoroborated derivative [Pt-2(mu-P2O5(BF2)(4)](4) (Pt(pop-BF2)) in water and acetonitrile upon excitation of high lying (< 300 nm) UV absorption bands. We observe an ultrafast relaxation channel from high lying states to the lowest triplet state that partly (Pt(pop) in H2O, Pt(pop-BF2)) or fully (Pt(pop) in MeCN) bypasses the lowest singlet excited state. As a consequence, vibrational wave packets are detected in the lowest triplet state and/or the lowest excited singlet of both complexes, even though the electronic relaxation cascade spans ca. 2 and 1.3 eV, respectively. In the case of Pt(pop-BF2), coherent wave packets generated by optical excitation of the lowest singlet 1A2u state also are reported. Overall, the reported dephasing times of the Pt-Pt oscillator in the ground, singlet and triplet states do not depend much on the solvent or the molecular structure. (C) 2017 Elsevier B. V. All rights reserved.
Czech name
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Czech description
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Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10405 - Electrochemistry (dry cells, batteries, fuel cells, corrosion metals, electrolysis)

Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2017
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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