摘要
As a burgeoning research field, ultrasound-responsive materials have attracted intense interest in healthcare research. However, the basic mechanism of sonochemical effect in the quasi-solid state is far from being well understood than those in the solution. Herein, we showcase mechanochemical transformations of europium(Ⅲ) complexes in a supramolecular hydrogel matrix. With the combination of labile terpyridine-europium complexes(TPY-Eu^(3+)) as mechanochromic moieties and an ultrasound-responsive fluorogen(URF) as a molecular tweezer, the hydrogel produces a notable fluorescence change in response to ultrasound. The mechanochemical transformation was elucidated by molecular dynamics(MD) simulations, and fully probed and evidenced by electrochemical experiments, X-ray photoelectron spectroscopy(XPS), and attenuated total reflectance-Fourier transform infrared(ATR-FTIR) spectroscopy.
基金
supported by the National Key R&D Program of China(No.2018YFC0114900)
National Natural Science Foundation of China(No.52103246,U1967217)
Zhejiang Provincial Natural Science Foundation of China(Nos.LD22E050008,LD22A020002)
China Postdoctoral Science Foundation(No.2021TQ0341,2020M671828)
Ningbo Natural Science Foundation(No.2021J203,202003N4361)
Youth Innovation Promotion Association of Chinese Academy of Sciences(No.2019297)
Key Research Program of Frontier Science,Chinese Academy of Sciences(No.QYZDB-SSW-SLH036)
the Sino-German Mobility Program(No.M-0424)
K.C.Wong Education Foundation(No.GJTD-2019–13)
National Independent Innovation Demonstration Zone Shanghai Zhangjiang Major Projects(No.ZJZX2020014)
the Starry Night Science Fund of Zhejiang University Shanghai Institute for Advanced Study(No.SN-ZJU-SIAS-003)
Director Foundation of Ningbo Institute of Materials Technology and Engineering。
