Effect of Isomerization on Excited-State Dynamics of Carotenoid Fucoxanthin

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60076658%3A12310%2F17%3A43895489" target="_blank" >RIV/60076658:12310/17:43895489 - isvavai.cz</a>
Alternative codes found
RIV/60077344:_____/17:00479487
Result on the web
<a href="http://pubs.acs.org/doi/10.1021/acs.jpcb.7b02526" target="_blank" >http://pubs.acs.org/doi/10.1021/acs.jpcb.7b02526</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1021/acs.jpcb.7b02526" target="_blank" >10.1021/acs.jpcb.7b02526</a>

Result language
angličtina
Original language name
Effect of Isomerization on Excited-State Dynamics of Carotenoid Fucoxanthin
Original language description
Ultrafast transient absorption spectroscopy and single-wavelength anisotropy measurements were used to study the effect of isomerization on the excited-state properties of fucoxanthin in polar and nonpolar solvents. The excitation wavelengths were 477 nm for all-trans-fucoxanthin, and 333 and 477 nm for cis-fucoxanthin. All transient absorption spectra of the fucoxanthin isomers in polar solvents show intramolecular charge transfer (ICT) state features, typical for carbonyl carotenoids. Global analysis of the data requires an additional fitting component, originated from the presence of blue and red forms of fucoxanthin in a polar protic solvent. Here we demonstrate that the ICT state decays faster than the S-1 state, due to the significant contribution of the red form to the ICT state dynamics. The isomerization does not affect the S-1 lifetime, but induces a larger difference between the S-1- and ICT-state lifetimes in cis-fucoxanthin, which is likely-caused by alterations of ICT coupling to either the S-1 or So states; the S*-state signal is more pronounced for cis-isomers in a nonpolar solvent.
Czech name
—
Czech description
—

Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
—
OECD FORD branch
10610 - Biophysics

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

Similar results(10)