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An Ultrastable, Small {Ag 7 } 5+ Nanocluster within a Triangular Hollow Polyoxometalate Framework
Author(s) -
Yonesato Kentaro,
Ito Hiroyasu,
Yokogawa Daisuke,
Yamaguchi Kazuya,
Suzuki Kosuke
Publication year - 2020
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.202008402
Subject(s) - nanoclusters , polyoxometalate , cluster (spacecraft) , materials science , catalysis , small molecule , nanotechnology , nanoparticle , charge exchange , chemical physics , molecule , crystallography , ion , chemistry , organic chemistry , biochemistry , computer science , programming language
Small Ag n nanoclusters ( n <10) have been emerging as promising materials as sensing, biolabeling, and catalysis because of their unique electronic states and optical properties. However, studying synthesis, structure determination, and exploration of their properties remain major challenges as a result of the low stability of small Ag nanoclusters. Herein, we synthesized an atomically precise face‐centered‐cubic‐type small {Ag 7 } 5+ nanocluster supported by a novel triangular hollow polyoxometalate (POM) framework [Si 3 W 27 O 96 ] 18− . The cluster showed unique {Ag 7 } 5+ ‐to‐POM charge transfer bands in both visible and UV light regions. Furthermore, this small {Ag 7 } 5+ nanocluster exhibited an unprecedented ultrastability in solution, despite having exposed Ag sites that can be accessed by small molecules, such as O 2 , water, and solvents.