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Temperature‐Responsive Self‐Assembly of Single Polyoxometalates Clusters Driven by Hydrogen Bonds
Author(s) -
Liu Qingda,
Yu Hongde,
Zhang Qinghua,
Wang Dong,
Wang Xun
Publication year - 2021
Publication title -
advanced functional materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 6.069
H-Index - 322
eISSN - 1616-3028
pISSN - 1616-301X
DOI - 10.1002/adfm.202103561
Subject(s) - materials science , polyoxometalate , cluster (spacecraft) , self assembly , hydrogen bond , nanotechnology , catalysis , nanowire , chemical physics , crystallography , molecule , organic chemistry , chemistry , computer science , programming language
Smart materials that can respond to external stimuli are typically prepared through the coating of specific responsive ligands. Herein, for the first time, thermally reconfigurable single polyoxometalate (POM) cluster assemblies without temperature‐responsive surfactants are reported. Based on transmission electron microscopy observation, POM clusters are obtained to arrange into a 2D single cluster superlattice at 25 °C, and transform themselves into a single cluster nanowire below 0 °C, which is caused by the switching of hydrogen bond linkage between clusters. Contributed by the specific coordinative state, the POM assembly exhibits excellent catalytic activity and stability toward olefin epoxidation at room temperature, demonstrating the application potentials of the nanostructures based on single clusters.