An Ultrastable, Small {Ag7}5+ Nanocluster within a Triangular Hollow Polyoxometalate Framework. (10th July 2020)

• Record Type: Journal Article
• Authors: Yonesato, Kentaro; Ito, Hiroyasu; Yokogawa, Daisuke; Yamaguchi, Kazuya; Suzuki, Kosuke
• Is Part Of: Angewandte Chemie. Volume 132:Number 38(2020)
• Page Start: 16503
• Page End: 16507
• Publication Date: 2020-07-10
• Subjects: cluster compounds -- polyoxometalates -- silver nanoclusters -- template synthesis; Chemistry -- Periodicals; 540
• DOI: 10.1002/ange.202008402
• Languages: English
• ISSNs: 0044-8249

Abstract

Abstract: 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 {Ag7 } 5+ nanocluster supported by a novel triangular hollow polyoxometalate (POM) framework [Si3 W27 O96 ] 18− . The cluster showed unique {Ag7 } 5+ ‐to‐POM charge transfer bands in both visible and UV light regions. Furthermore, this small {Ag7 } 5+ nanocluster exhibited an unprecedented ultrastability in solution, despite having exposed Ag sites that can be accessed by small molecules, such as O2, water, and solvents. Abstract : You got the silver : An ultrastable, small {Ag7 } 5+ nanocluster was synthesized within an unprecedented triangular hollow polyoxometalate (POM) framework [Si3 W27 O96 ] 18− . The cluster showed unique {Ag7 } 5+ ‐to‐POM charge transfer bands in both visible‐ and UV‐light regions.