恭喜我组秦召贤博士生发表题为“Size-dependent strong metal-support interaction in TiO2 supported Au nanocatalysts.”(Nature Communication,2020, 11, 6019. DOI: 10.1038/s41467-020-19789-4. Editors’ Highlights on Inorganic, Nanoscale and Physical Chemistry
Thermal-stimuli responsive nanomaterials hold great promise in designing multifunctional
intelligent devices for a wide range of applications. In this work, a reversible isomeric
transformation in an atomically precise nanocluster is reported. We show that biicosahedral
[Au13Ag12(PPh3)10Cl8]SbF6 nanoclusters composed of two icosahedral Au7Ag6 units by
sharing one common Au vertex can produce two temperature-responsive conformational
isomers with complete reversibility, which forms the basis of a rotary nanomotor driven by
temperature. Differential scanning calorimetry analysis on the reversible isomeric transformation
demonstrates that the Gibbs free energy is the driving force for the transformation.
This work offers a strategy for rational design and development of atomically precise
nanomaterials via ligand tailoring and alloy engineering for a reversible stimuli-response
behavior required for intelligent devices. The two temperature-driven, mutually convertible
isomers of the nanoclusters open up an avenue to employ ultra-small nanoclusters (1 nm) for
the design of thermal sensors and intelligent catalysts.