Ultrafast spectroscopy of the hydrophilic carotenoid crocin at various pH

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60077344%3A_____%2F24%3A00604425" target="_blank" >RIV/60077344:_____/24:00604425 - isvavai.cz</a>

Alternative codes found

RIV/60076658:12310/24:43908318

Result on the web

<a href="https://pubs.rsc.org/en/content/articlelanding/2024/cp/d4cp00665h" target="_blank" >https://pubs.rsc.org/en/content/articlelanding/2024/cp/d4cp00665h</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1039/d4cp00665h" target="_blank" >10.1039/d4cp00665h</a>

Result language

angličtina

Original language name

Ultrafast spectroscopy of the hydrophilic carotenoid crocin at various pH

Original language description

This study delves into the pH-dependent effects on the excited-state behavior of crocin, a hydrophilic carotenoid with diverse functions in biological systems. Steady-state spectroscopy demonstrates notable changes in absorption and fluorescence spectra, characterized by a pH-dependent blue shift and altered resolution of vibrational bands. Transient absorption spectra further elucidate these effects, highlighting a significant blue shift in the S1-Sn peak with increasing pH. Detailed kinetic analysis shows the pH-dependent dynamics of crocin's excited states. At pH 11, a shortening of effective conjugation is observed, resulting in a prolonged S1/ICT lifetime. Conversely, at pH 9, our data suggest a more complex scenario, suggesting the presence of two distinct crocin species with different relaxation patterns. This implies structural alterations within the crocin molecule, potentially linked to the deprotonation of hydroxyl groups in crocin and/or saponification at high pH.

Czech name

—

Czech description

—

Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

10610 - Biophysics

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

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2024

Confidentiality

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

Name of the periodical

Physical Chemistry Chemical Physics

ISSN

1463-9076

e-ISSN

1463-9084

Volume of the periodical

26

Issue of the periodical within the volume

13

Country of publishing house

GB - UNITED KINGDOM

Number of pages

9

Pages from-to

10225-10233

UT code for WoS article

001186378200001

EID of the result in the Scopus database

2-s2.0-85188121700