Immobilization and practical photoredox processes with dithienoquinoxaline
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216275%3A25310%2F25%3A39923131" target="_blank" >RIV/00216275:25310/25:39923131 - isvavai.cz</a>
Result on the web
<a href="https://doi.org/10.1016/j.jcat.2025.116323" target="_blank" >https://doi.org/10.1016/j.jcat.2025.116323</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.jcat.2025.116323" target="_blank" >10.1016/j.jcat.2025.116323</a>
Alternative languages
Result language
angličtina
Original language name
Immobilization and practical photoredox processes with dithienoquinoxaline
Original language description
A novel organic dithienoquinoxaline photoredox catalyst has been immobilized through a straightforward copolymerization approach. The performed heterogenization did not alter fundamental thermal, electrochemical, and optical properties and, most importantly, the ability of the excited catalyst to act either as a one-electron reductant or oxidant using a single light source (similar to 450 nm). The oxidation power of the triplet excited state of both homogeneous and heterogeneous photocatalysts has been demonstrated in the oxidation of sulphides, amines, and alcohols. The photoreduction of nitroaromatics and ketones has been accomplished by utilizing (double-excited) dithienoquinoxaline radical anion. Both oxidation and reduction reactions were accomplished either in batch (homo/heterogeneous) or under continuous-flow conditions using a porous flexible monolithic column with immobilized catalyst. Repetitive cyclic oxidation/reduction of pharmaceutically and industrially important fluorenol/one system along with a consecutive nitro reduction and sulphur oxidation in bis(4-nitrophenyl)sulphide towards an antimalarial agent further demonstrates the wide applicability of the developed catalytic systems/protocols. The recyclability and eventual structural changes of the immobilized catalyst have been addressed through FT-IR spectra and TON/TOF values.
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
10401 - Organic chemistry
Result continuities
Project
<a href="/en/project/GA22-14988S" target="_blank" >GA22-14988S: DicyanoPyraZine: Versatile Tool for Photoredox Catalysis</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2025
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 Catalysis
ISSN
0021-9517
e-ISSN
1090-2694
Volume of the periodical
450
Issue of the periodical within the volume
October 2025
Country of publishing house
US - UNITED STATES
Number of pages
8
Pages from-to
116323
UT code for WoS article
001556338400002
EID of the result in the Scopus database
2-s2.0-105010878774