Photosynthetic Energy Transfer: Missing in Action (Detected Spectroscopy)?
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388971%3A_____%2F24%3A00603229" target="_blank" >RIV/61388971:_____/24:00603229 - isvavai.cz</a>
Alternative codes found
RIV/00216208:11320/24:10491580
Result on the web
<a href="https://pubs.acs.org/doi/10.1021/acs.jpclett.4c02665" target="_blank" >https://pubs.acs.org/doi/10.1021/acs.jpclett.4c02665</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1021/acs.jpclett.4c02665" target="_blank" >10.1021/acs.jpclett.4c02665</a>
Alternative languages
Result language
angličtina
Original language name
Photosynthetic Energy Transfer: Missing in Action (Detected Spectroscopy)?
Original language description
In recent years, action-detected ultrafast spectroscopies have gained popularity offering distinct advantages over their coherently detected counterparts, such as spatially resolved and operando measurements with high sensitivity. However, there are also fundamental limitations connected to the process of signal generation in action-detected experiments. Here we perform fluorescence-detected two-dimensional electronic spectroscopy (F-2DES) of the light-harvesting II (LH2) complex from purple bacteria. We demonstrate that the B800-B850 energy transfer process in LH2 is weak but observable in F-2DES, unlike in coherently detected 2DES where the energy transfer is visible with 100% contrast. We explain the weak signatures using a disordered excitonic model that accounts for experimental conditions. We further derive a general formula for the presence of excited-state signals in multichromophoric aggregates, dependent on the aggregate geometry, size, excitonic coupling and disorder. We find that the prominence of excited-state dynamics in action-detected spectroscopy offers a unique probe of excitonic delocalization in multichromophoric systems.
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
10606 - Microbiology
Result continuities
Project
—
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2024
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
15
Issue of the periodical within the volume
50
Country of publishing house
US - UNITED STATES
Number of pages
11
Pages from-to
12376-12386
UT code for WoS article
001374184600001
EID of the result in the Scopus database
2-s2.0-85211633442