http://www.cnr.it/ontology/cnr/individuo/prodotto/ID168891
Femtosecond study on the isomerization dynamics of NK88: I. Ground state dynamics after photoexcitation (Articolo in rivista)
- Type
- Label
- Femtosecond study on the isomerization dynamics of NK88: I. Ground state dynamics after photoexcitation (Articolo in rivista) (literal)
- Anno
- 2006-01-01T00:00:00+01:00 (literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
- 10.1063/1.2210482 (literal)
- Alternative label
P. Nuernberger, G. Vogt, R. Improta, F. Santoro, G. Gerber (2006)
Femtosecond study on the isomerization dynamics of NK88: I. Ground state dynamics after photoexcitation
in The Journal of chemical physics
(literal)
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- P. Nuernberger, G. Vogt, R. Improta, F. Santoro, G. Gerber (literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
- Rivista
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#descrizioneSinteticaDelProdotto
- Pubblicazione su rivista scientifica (literal)
- Note
- ISI Web of Science (WOS) (literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
- Univ Wurzburg, Inst Phys, Am Hubland, D-97074 Wurzburg, Germany.
Univ Wurzburg, Inst Phys, D-97074 Wurzburg, Germany.
CNR, Ist Biostrutture e Biommagini, I-80134 Naples, Italy.
CNR, Ist Proc Chim Fis, Area Ric, I-56124 Pisa, Italy (literal)
- Titolo
- Femtosecond study on the isomerization dynamics of NK88: I. Ground state dynamics after photoexcitation (literal)
- Abstract
- Recently, optimal control of a photoisomerization reaction in the
liquid phase was demonstrated for the first time on the system
3,3'-diethyl-2,2'-thiacyanine (NK88). Additionally, the class of
cyanines to which the molecule NK88 belongs draws a lot of
attention in different recent theoretical publications. Therefore,
a better understanding of the molecular dynamics of this molecular
system is of special interest. Experiments using the femtosecond
pump-supercontinuum probe technique (PSCP) with an excitation
wavelength of 400~nm and a spectral range of 370 to 620~nm for the
probe beam have been performed. In order to analyze the dynamics
properly the time window has been chosen to comprise the
characteristic times of the contributing processes, additionally
we have employed two solvents, methanol and ethylene glycol, and
have conducted anisotropy measurements. The spectroscopic data
have been assigned to different molecular states with the help of
DFT (density functional theory) and MP2 (second-order
Moller-Plesset perturbation theory) calculations. The analysis of
the data has revealed in the most likely model that three
different isomers exist with different lifetimes. On the basis of
experimental and theoretical data, a conclusive scheme of the
isomerization reaction is presented. (literal)
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