Merging gold plasmonic nanoparticles and l-proline inside a MOF for plasmon-induced visible light chiral organocatalysis at low temperature; Nanoscale; Vol. 16, iss. 10

Merging gold plasmonic nanoparticles and l-proline inside a MOF for plasmon-induced visible light chiral organocatalysis at low temperature; Nanoscale; Vol. 16, iss. 10

Xehetasun bibliografikoak
Parent link:Nanoscale.— .— Cambridge: RSC Publishing
Vol. 16, iss. 10.— 2024.— P. 5313-5322
Erakunde egilea: National Research Tomsk Polytechnic University (570)
Beste egile batzuk: Kushnarenko A, S, Angelina Sergeevna, Zabelina A. A. Anastasiya Aleksandrovna, Guselnikova O. A. Olga Andreevna, Milyutina (Miliutina) E. V. Elena Vadimovna, Vokata B., Zabelin D, V, Denis Vladimirovich, Burtsev V., Valiev R. R. Rashid Rinatovich, Kolska Zd. Zdenka, Paidar M., Sikora V, Yu. Vadim Yurjevich, Postnikov P. S. Pavel Sergeevich, Svorcik V, Vaclav, Lyutakov O. Oleksy
Gaia:Title screen
Light-driven asymmetric photocatalysis represents a straightforward approach in modern organic chemistry. In comparison to the homogeneous one, heterogeneous asymmetric photocatalysis has the advantages of easy catalyst separation, recovery, and reuse, thus being cost- and time-effective. Here, we demonstrate how plasmon-active centers (gold nanoparticles – AuNPs) allow visible light triggering of chiral catalyst (proline) in model aldol reaction between acetone and benzaldehyde. The metal–organic framework UiO-66–NH2 was used as an advanced host platform for the loading of proline and AuNPs and their stabilization in spatial proximity. Aldol reactions were carried out at a low temperature (−20 °C) under light illumination which resulted in 91% ee with a closed-to-quantitative yield, 4.5 times higher than that without light (i.e. in the absence of plasmon triggering). A set of control experiments and quantum chemical modeling revealed that the plasmon assistance proceeds through hot electron excitation followed by an interaction with an enamine with the formation of anion radical species. We also demonstrated the high stability of the proposed system in multiple catalytic cycles without leaching metal ions, which makes our approach especially promising for heterogeneous asymmetric photocatalysis.
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AM_Agreement
Hizkuntza:ingelesa
Argitaratua: 2024
Gaiak:
электронный ресурс
труды учёных ТПУ
Sarrera elektronikoa:https://doi.org/10.1039/D3NR04707E
Formatua: Baliabide elektronikoa Liburu kapitulua
KOHA link:https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=674377

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