Au Core–Pd Shell Bimetallic Nanoparticles Immobilized within Hyper-Cross-Linked Polystyrene for Mechanistic Study of Suzuki Cross-Coupling: Homogeneous or Heterogeneous Catalysis?

Au Core–Pd Shell Bimetallic Nanoparticles Immobilized within Hyper-Cross-Linked Polystyrene for Mechanistic Study of Suzuki Cross-Coupling: Homogeneous or Heterogeneous Catalysis? Научная публикация

Журнал

Organic Process Research & Development
ISSN: 1083-6160 , E-ISSN: 1520-586X

Вых. Данные

Год: 2018, Том: 22, Номер: 12, Страницы: 1606-1613 Страниц : 8 DOI: 10.1021/acs.oprd.8b00272

Авторы

Nemygina Nadezhda A. ^1,2 , Nikoshvili Linda Zh. ² , Tiamina Irina Yu. ² , Bykov Alexey V. ² , Smirnov Ilia S. ^3,2 , LaGrange Thomas ⁴ , Kaszkur Zbigniew ³ , Matveeva Valentina G. ² , Sulman Esther M. ² , Kiwi-Minsker Lioubov ^4,1

Организации

1	Тверской государственный университет
2	Tver State Technical University
3	Institute of Physical Chemistry Polish Academy of Sciences
4	Ecole Polytechnique Fédérale de Lausanne

The synthesis of catalytically active bimetallic Au–Pd nanoparticles stabilized in hyper-cross-linked polystyrene (HPS) for Suzuki cross-coupling of 4-bromoanisole (4-BrAn) and phenylboronic acid is presented. The core–shell structure with a thin (less than 1 nm) Pd shell and a Au core was proven by X-ray diffraction and high-angle annular dark-field scanning transmission electron microscopy combined with energy-dispersive X-ray spectroscopy. More than a 2-fold increase in 4-BrAn conversion was found in comparison with monometallic Pd/HPS. Moreover, when the Suzuki reaction was carried out under visible-light irradiation, the product yield further increased by about 1.3 times (from 56.1% up to 73.7%). This effect was assigned to a local surface plasmon resonance arising in the Au core that allowed electron transfer to the extremely thin Pd layer due to intimate contact with gold. The results suggest that the rate-limiting step of the catalytic cycle takes place on the surface of the Pd shell, serving as evidence of the heterogeneous catalysis nature.

Nemygina N.A. , Nikoshvili L.Z. , Tiamina I.Y. , Bykov A.V. , Smirnov I.S. , LaGrange T. , Kaszkur Z. , Matveeva V.G. , Sulman E.M. , Kiwi-Minsker L.
Au Core–Pd Shell Bimetallic Nanoparticles Immobilized within Hyper-Cross-Linked Polystyrene for Mechanistic Study of Suzuki Cross-Coupling: Homogeneous or Heterogeneous Catalysis?
Organic Process Research & Development. 2018. V.22. N12. P.1606-1613. DOI: 10.1021/acs.oprd.8b00272 Scopus OpenAlex

Scopus:	2-s2.0-85058194921
OpenAlex:	W2901188278

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