Transient Absorption of Chlorophylls and Carotenoids after Two-Photon Excitation of LHCII
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60076658%3A12310%2F21%3A43903230" target="_blank" >RIV/60076658:12310/21:43903230 - isvavai.cz</a>
Alternative codes found
RIV/00216208:11320/21:10436192
Result on the web
<a href="https://pubs.acs.org/doi/10.1021/acs.jpclett.1c00122" target="_blank" >https://pubs.acs.org/doi/10.1021/acs.jpclett.1c00122</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1021/acs.jpclett.1c00122" target="_blank" >10.1021/acs.jpclett.1c00122</a>
Alternative languages
Result language
angličtina
Original language name
Transient Absorption of Chlorophylls and Carotenoids after Two-Photon Excitation of LHCII
Original language description
Femtosecond transient absorption spectroscopy following two-photon excitation (2PE) is used to determine the contributions of carotenoids and chlorophylls to the 2PE signals in the main plant light-harvesting complex (LHCII). For 2PE, excitation at 1210 and 1300 nm was used, being within the known 2PE profile of LHCII. At both excitation wavelengths, the transient absorption spectra exhibit a shape characteristic of excited chlorophylls with only a minor contribution from carotenoids. We compare the 2PE data measured for LHCII with those obtained from 2PE of a lutein/chlorophyll a mixture in acetone. We estimate that although the 2PE cross section of a single carotenoid in acetone is similar to 1.7 times larger than that of a Chl a, due to the 1:3.5 carotenoid/Chl ratio in LHCII, only one-third of the absorbed 2PE photons excite carotenoids in LHCII in the 1200-1300 nm range.
Czech name
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Czech description
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Classification
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
10301 - Atomic, molecular and chemical physics (physics of atoms and molecules including collision, interaction with radiation, magnetic resonances, Mössbauer effect)
Result continuities
Project
<a href="/en/project/GX19-28323X" target="_blank" >GX19-28323X: Relation between structure and function of carotenoids: New pathways to answer unresolved questions</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2021
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 PHYSICAL CHEMISTRY LETTERS
ISSN
1948-7185
e-ISSN
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Volume of the periodical
12
Issue of the periodical within the volume
12
Country of publishing house
US - UNITED STATES
Number of pages
6
Pages from-to
3176-3181
UT code for WoS article
000636950500021
EID of the result in the Scopus database
2-s2.0-85103682056