Immobilization and practical photoredox processes with dithienoquinoxaline

Kód výsledku v 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>

Výsledek na webu

<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>

Jazyk výsledku

angličtina

Název v původním jazyce

Immobilization and practical photoredox processes with dithienoquinoxaline

Popis výsledku v původním jazyce

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.

Název v anglickém jazyce

Immobilization and practical photoredox processes with dithienoquinoxaline

Popis výsledku anglicky

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.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10401 - Organic chemistry

Projekt

<a href="/cs/project/GA22-14988S" target="_blank" >GA22-14988S: DikyanPyraZin: Všestranný nástroj fotoredoxní katalýzy</a><br>

Návaznosti

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

Rok uplatnění

2025

Kód důvěrnosti údajů

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

Název periodika

Journal of Catalysis

ISSN

0021-9517

e-ISSN

1090-2694

Svazek periodika

450

Číslo periodika v rámci svazku

October 2025

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

8

Strana od-do

116323

Kód UT WoS článku

001556338400002

EID výsledku v databázi Scopus

2-s2.0-105010878774