Mechanochemical transformation of fluorescent hydrogel based on dynamic lanthanide-terpyridine coordination

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 trans...

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Bibliographic Details
Published in:Chinese chemical letters 2023-03, Vol.34 (3), p.107290, Article 107290
Main Authors: Yin, Guangqiang, Huang, Jianxiang, Liu, Depeng, Li, Rui, Wei, Shuxin, Si, Muqing, Ni, Feng, Zheng, Yinfei, Yang, Qiu, Zhou, Ruhong, Le, Xiaoxia, Lu, Wei, Chen, Tao
Format: Article
Language:English
Subjects:
Dynamic interaction
Fluorescence
Mechanochemical transformation
Supramolecular hydrogel
Terpyridine-europium coordination
Ultrasound-responsive
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Summary: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-Eu3+) 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. [Display omitted] By combining labile terpyridine-europium complexes as mechanochromic moieties and an ultrasonic-responsive fluorogen (URF) as a molecular tweezer, the hydrogel displays a visible fluorescence change in response to ultrasound.
ISSN:1001-8417
1878-5964
DOI:10.1016/j.cclet.2022.03.013