A Unified Picture of S* in Carotenoids

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60076658%3A12310%2F16%3A43890797" target="_blank" >RIV/60076658:12310/16:43890797 - isvavai.cz</a>

Výsledek na webu

<a href="http://pubs.acs.org/doi/abs/10.1021/acs.jpclett.6b01455" target="_blank" >http://pubs.acs.org/doi/abs/10.1021/acs.jpclett.6b01455</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1021/acs.jpclett.6b01455" target="_blank" >10.1021/acs.jpclett.6b01455</a>

Jazyk výsledku

angličtina

Název v původním jazyce

A Unified Picture of S* in Carotenoids

Popis výsledku v původním jazyce

In pi-conjugated chain molecules such as carotenoids, coupling between electronic and vibrational degrees of freedom is of central importance. It governs both dynamic and static properties, such as the time scales of excited state relaxation as well as absorption spectra. In this work, we treat vibronic dynamics in carotenoids on four electronic states (vertical bar S-0 >, vertical bar S-1 >, vertical bar S-2 >, and vertical bar S-n >) in a physically rigorous framework. This model explains all features previously associated with the intensely debated S* state. Besides successfully fitting transient absorption data of a zeaxanthin homologue, this model also accounts for previous results from global target analysis and chain length-dependent studies. Additionally, we are able to incorporate findings from pump-deplete-probe experiments, which were incompatible to any pre-existing model. Thus, we present the first comprehensive and unified interpretation of S*-related features, explaining them by vibronic transitions on either S-1, S-0, or both, depending on the chain length of the investigated carotenoid.

Název v anglickém jazyce

A Unified Picture of S* in Carotenoids

Popis výsledku anglicky

In pi-conjugated chain molecules such as carotenoids, coupling between electronic and vibrational degrees of freedom is of central importance. It governs both dynamic and static properties, such as the time scales of excited state relaxation as well as absorption spectra. In this work, we treat vibronic dynamics in carotenoids on four electronic states (vertical bar S-0 >, vertical bar S-1 >, vertical bar S-2 >, and vertical bar S-n >) in a physically rigorous framework. This model explains all features previously associated with the intensely debated S* state. Besides successfully fitting transient absorption data of a zeaxanthin homologue, this model also accounts for previous results from global target analysis and chain length-dependent studies. Additionally, we are able to incorporate findings from pump-deplete-probe experiments, which were incompatible to any pre-existing model. Thus, we present the first comprehensive and unified interpretation of S*-related features, explaining them by vibronic transitions on either S-1, S-0, or both, depending on the chain length of the investigated carotenoid.

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

BO - Biofyzika

OECD FORD obor

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Projekt

<a href="/cs/project/GA16-10417S" target="_blank" >GA16-10417S: Světlosběrné a fotoprotektivní funkce karotenoidů - nové přístupy pomocí multipulsní femtosekundové spektroskopie</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2016

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

JOURNAL OF PHYSICAL CHEMISTRY LETTERS

ISSN

1948-7185

e-ISSN

—

Svazek periodika

7

Číslo periodika v rámci svazku

17

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

6

Strana od-do

3347-3352

Kód UT WoS článku

000382603300009

EID výsledku v databázi Scopus

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