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Sol–Gel Synthesis of Metal–Phenolic Coordination Spheres and Their Derived Carbon Composites
Author(s) -
Wei Jing,
Wang Gen,
Chen Feng,
Bai Min,
Liang Yan,
Wang Huanting,
Zhao Dongyuan,
Zhao Yongxi
Publication year - 2018
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.201805781
Subject(s) - tannic acid , metal , ligand (biochemistry) , formaldehyde , metal ions in aqueous solution , coordination complex , materials science , carbon fibers , electrocatalyst , chemical engineering , chemistry , inorganic chemistry , electrode , organic chemistry , composite material , electrochemistry , composite number , biochemistry , receptor , engineering
A formaldehyde‐assisted metal–ligand crosslinking strategy is used for the synthesis of metal–phenolic coordination spheres based on sol–gel chemistry. A range of mono‐metal (Co, Fe, Al, Ni, Cu, Zn, Ce), bi‐metal (Fe‐Co, Co‐Zn) and multi‐metal (Fe‐Co‐Ni‐Cu‐Zn) species can be incorporated into the frameworks of the colloidal spheres. The formation of coordination spheres involves the pre‐crosslinking of plant polyphenol (such as tannic acid) by formaldehyde in alkaline ethanol/water solvents, followed by the aggregation assembly of polyphenol oligomers via metal–ligand crosslinking. The coordination spheres can be used as sensors for the analysis of nucleic acid variants with single‐nucleotide discrimination, and a versatile precursor for electrode materials with high electrocatalytic performance.