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Updated: Sep 19, 2025
A Bright NIR-II Fluorescence Probe for Vascular and Tumor Imaging
Published on: March 17, 2023
Construction of a 12-Metal Cd(II)-Yb(III) Nanoring for Excitation Wavelength-Dependent NIR Luminescence Detection of
Wen Wu1, Jiazhao Lin1, Keqin Yang1
1Zhejiang Key Laboratory of Carbon Materials, Key Lab of Biohealth Materials and Chemistry of Wenzhou, College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou 325035, China.
Abstract:
A 12-metal Cd(II)-Yb(III) nanoring (1) with a diameter of 2.7 nm was constructed from a new flexible octadentate Schiff base ligand. It displays an excitation wavelength-dependent luminescence response to rhein (RH), which is described by I520nm/I385nm = A*[RH]2 + B*[RH] + C. It can be used to rapidly detect RH concentrations in CH3CN and fetal calf serum with high selectivity and sensitivity. The response times to RH are about 5 s, and the limits of detection are from 5.97 to 9.92 μM.
