College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou 325035, China.
Department of Chemistry and Biochemistry, The University of Texas at Austin, 1 University Station A5300, Austin, Texas 78712, United States.
Inorg Chem. 2020 Dec 7;59(23):16809-16813. doi: 10.1021/acs.inorgchem.0c02567. Epub 2020 Nov 22.
One 12-metal Cd(II)-Yb(III) nanoring, [CdYbL(OAc)]·4OH (), with a size of 1.2 × 2.8 × 2.8 nm was obtained from a designed flexible salen-type ligand that has eight coordination sites (O and N atoms). The near-IR emission of Yb(III) at 983 nm was detected upon the excitation of ligand-central absorption at 386 nm. This Cd(II)-Yb(III) nanoring exhibits high sensitivity to nitrofuran antibiotics (NFAs) even in the presence of other antibiotics. The quenching constants and limits of detection of NFAs are 2.5 × 10-4.5 × 10 M and 1.5-2.8 μM, respectively.
一个 12 个金属 Cd(II)-Yb(III) 纳米环，[CdYbL(OAc)]·4OH ()，大小为 1.2×2.8×2.8nm，是由一个设计的灵活的 salen 型配体得到的，它有八个配位位点（O 和 N 原子）。在激发配体中心吸收 386nm 时，可以检测到 Yb(III) 的近红外发射在 983nm。这个 Cd(II)-Yb(III) 纳米环对硝基呋喃类抗生素（NFAs）具有很高的灵敏度，即使在存在其他抗生素的情况下也是如此。NFAs 的猝灭常数和检测限分别为 2.5×10-4.5×10 M 和 1.5-2.8 μM。
