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Ultrasonic cutting strategy yields lanthanide organic nanochains with bright emission: thermally enhanced luminescence and bio-optical imaging
Fan Yang, Guan‐Huang Zhang, Hai-Ling Wang*, Wen-Wen Qin, Zhong-Hong Zhu*, Fu-Pei Liang, Hua-Hong Zou*
https://doi.org/10.1016/j.cjsc.2025.100761
ABSTRACT
In this work, an ultrasonic tailoring strategy was used to obtain nanosized one-dimensional chain-like lanthanide metal-organic frameworks (Ln-MOFs) with excellent photophysical properties for the first time, and high-resolution bio-optical imaging applications were achieved. As the ambient temperature gradually increases, the chain-like Ln-MOFs do not show obvious thermal quenching of luminescence. It is worth noting that when the ambient temperature exceeds 300 K, the departure of the terminal-coordinated H2O molecules within the Ln-MOFs structure induces significant thermally enhanced luminescence. Furthermore, by regulating the energy transfer pathways of bimetallic-doped TbxEu(1-x)-MOFs, a series of luminescence changes from yellow-green to red were achieved. Based on the multiple excitation, thermally enhanced luminescence, and multicolor luminescence properties of Ln-MOFs, a complex anti-counterfeiting system was constructed. More noteworthy is that the Ln-MOFs nanochains obtained using the ultrasonic cutting strategy have high-resolution optical imaging effects on HeLa, MCF-7, MDA-MB-231 cells and living zebrafish, and can specifically label the lysosomes of living cells. This work opens up new horizons for the application of multidimensional lanthanide complex emitters in high-resolution bio-optical imaging and opens a new blueprint for constructing lanthanide complex emitters with "all-in-one" functions.
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