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Small‐Sized Bimetallic CuPd Nanoclusters Encapsulated Inside Cavity of NH 2 ‐UiO‐66(Zr) with Superior Performance for Light‐Induced Suzuki Coupling Reaction
Author(s) -
Sun Dengrong,
Xu Mengpeng,
Jiang Yongteng,
Long Jinlin,
Li Zhaohui
Publication year - 2018
Publication title -
small methods
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 4.66
H-Index - 46
ISSN - 2366-9608
DOI - 10.1002/smtd.201800164
Subject(s) - bimetallic strip , nanoclusters , catalysis , materials science , metal , photochemistry , metal organic framework , electron transfer , suzuki reaction , coupling reaction , inorganic chemistry , palladium , chemistry , nanotechnology , organic chemistry , metallurgy , adsorption
Bimetallic CuPd nanoclusters with a small size of ≈0.9 nm are encapsulated inside cavities of NH 2 ‐UiO‐66(Zr) via double‐solvent impregnation, followed by a reduction process with NaBH 4 . As compared with monometallic Pd@NH 2 ‐UiO‐66(Zr), bimetallic CuPd@NH 2 ‐UiO‐66(Zr) shows superior performance for light‐induced Suzuki coupling reaction since the introduced Cu acts as an electron mediator to facilitate the transfer of photogenerated electrons from light‐excited NH 2 ‐UiO‐66(Zr) to Pd, to form electron‐rich Pd. Moreover, CuPd@NH 2 ‐UiO‐66(Zr) also shows higher activity than CuPd/NH 2 ‐UiO‐66(Zr), in which CuPd nanoparticles are deposited on the surface of NH 2 ‐UiO‐66(Zr). The as‐obtained CuPd@NH 2 ‐UiO‐66(Zr) is stable and can be applied in the coupling of a variety of substituted iodobenzenes and phenylboronic acids. The simultaneous encapsulation of metallic Pd and Cu, acting as a catalytic active site and mediator respectively, inside the cavities of NH 2 ‐UiO‐66(Zr), represents a novel strategy for designing multifunctional metal‐organic framework based catalysts for light‐induced organic reactions.