Ultrafast electronic and vibrational relaxations in mixed-ligand dithione-dithiolato Ni, Pd, and Pt complexes

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388955%3A_____%2F14%3A00437613" target="_blank" >RIV/61388955:_____/14:00437613 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1039/c4dt01955e" target="_blank" >http://dx.doi.org/10.1039/c4dt01955e</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1039/c4dt01955e" target="_blank" >10.1039/c4dt01955e</a>

Result language
angličtina
Original language name
Ultrafast electronic and vibrational relaxations in mixed-ligand dithione-dithiolato Ni, Pd, and Pt complexes
Original language description
Ultrafast excited-state dynamics of planar Pt, Pd, and Ni dithione-dithiolato complexes were investigated by transient absorption spectroscopy on the femtosecond-picosecond timescale. All studied complexes show a common photobehaviour, although individual kinetics parameters and quantum yields vary with the metal, the dithione ligand and, namely the solvent (DMF, MeCN). Laser pulse irradiation at 800 nm populates the lowest singlet excited state of a dithiolato -> dithione charge transfer character, (LL)-L-1'CT. The optically excited state undergoes a solvation-driven sub-picosecond electronic relaxation that enhances the dithione/dithiolato charge separation. The (LL)-L-1'CT state decays with a 1.9-4.5 ps lifetime by two simultaneous pathways: intersystem crossing (ISC) to the lowest triplet state (LL)-L-3'CT and non-radiative decay to the ground state. ISC occurs on a similar to 6 ps timescale, virtually independent of the metal, whereas the rate of the non-radiative decay to the gro
Czech name
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Czech description
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Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
CF - Physical chemistry and theoretical chemistry
OECD FORD branch
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Project
<a href="/en/project/LD14129" target="_blank" >LD14129: Structure and dynamics of excited and redox states of photocatalytic complexes</a><br>
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year
2014
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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