Journal
ADVANCED FUNCTIONAL MATERIALS
Volume 31, Issue 30, Pages -Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/adfm.202103561
Keywords
hydrogen bonds; olefin epoxidation; polyoxometalate clusters; self-assembly; temperature responsiveness
Categories
Funding
- National Key R&D Program of China [2017YFA0700101, 2016YFA0202801]
- NSFC [22035004]
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This study reports thermally reconfigurable single polyoxometalate (POM) cluster assemblies without temperature-responsive surfactants for the first time, showing different structural arrangements at different temperatures. The POM assembly exhibits excellent catalytic activity and stability, demonstrating great potential for applications.
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 degrees C, and transform themselves into a single cluster nanowire below 0 degrees 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.
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