Femtosecond Fluorescence and Intersystem Crossing in Rhenium(I) Carbonyl-Bipyridine Complexes
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388955%3A_____%2F08%3A00309946" target="_blank" >RIV/61388955:_____/08:00309946 - isvavai.cz</a>
Result on the web
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DOI - Digital Object Identifier
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Alternative languages
Result language
angličtina
Original language name
Femtosecond Fluorescence and Intersystem Crossing in Rhenium(I) Carbonyl-Bipyridine Complexes
Original language description
Ultrafast electronic-vibrational relaxation upon excitation of the singlet charge-transfer b1A´ state of [Re(L)(CO)3(bpy)]n (L=Cl,Br,I, n=0; L=4-Et-pyridine, n=1+) in acetonitrile was investigated using the femtosecond fluorescence up-conversion technique with polychromatic detection. In addition, energies, characters, and molecular structures of the emitting states were calculated by TD-DFT. The luminescence is characterized by a broad fluorescence band at very short times, and evolves to the steady-state phosphorescence spectrum from the a3A" state at longer times. The analysis of the data allows us to identify three spectral components. The first two are characterized by decay times .tau.1 = 85-150 fs and .tau.2 = 340-1200 fs, depending on L, and are identified as fluorescence from the initially excited singlet state and phosphorescence from a higher triplet state (b3A"), respectively. The third component corresponds to the long-lived phosphorescence from the lowest a3A" state.
Czech name
Femtosekundová fluorescence a vnitřní přenos energie u série rheniových(I) bipyridinových karbonylových komplexů
Czech description
Pomocí femtosekundové spektroskopie byl studován nejníže ležící dovolený singletní stav b1A´ a následná luminiscence u série komplexů [(Re)(L)(CO)3(bpy)]n (L = Cl, Br, n=0; L = 4-Et-pyridin, n=1+) v acetonitrilu. Experimentální studium těchto komplexů bylo doprovázeno kvantověchemickými DFT a TD-DFT výpočty.
Classification
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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Result continuities
Project
<a href="/en/project/1P05OC068" target="_blank" >1P05OC068: Control of functional behaviour of transition - metal compounds</a><br>
Continuities
Z - Vyzkumny zamer (s odkazem do CEZ)
Others
Publication year
2008
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Journal of the American Chemical Society
ISSN
0002-7863
e-ISSN
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Volume of the periodical
130
Issue of the periodical within the volume
28
Country of publishing house
US - UNITED STATES
Number of pages
8
Pages from-to
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UT code for WoS article
000257507400026
EID of the result in the Scopus database
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