Construction of a 18-Metal Neodymium(III) Nanoring with NIR Luminescent Sensing to Antibiotics
Yanan Ma, Xiaoping Yang, Dongliang Shi, Mengyu Niu, Desmond Schipper
Abstract
One 18-metal Nd(III) nanoring, [Nd18(L1)8(HL2)2(OAc)20(MeOH)8(EtOH)6(H2O)4]·2(MeOH)·6(H2O) (1), was constructed by the use of a hexadentate Schiff base ligand. For 1, the near-infrared (NIR) luminescence of Nd(III) was detected under the excitation of absorption band at 371 nm. The study of luminescent sensing properties exhibits that, even with the existence of other antibiotics, this Nd(III) nanoring displays high sensitivity and selectivity to nitrofuran antibiotics (NFAs). The luminescence quenching constants and limits of detection of 1 to NFAs are found to be 1.4 × 104 to 3.5 × 104 M–1 and 0.9–2.2 μM, respectively.
Topics & Concepts
ChemistryLuminescenceNanoringLanthanideMetalQuenching (fluorescence)Ligand (biochemistry)Luminescent MeasurementsPhotochemistryFluorescenceInorganic chemistryNanotechnologyOrganic chemistryOptoelectronicsOpticsPhysicsMaterials scienceIonReceptorBiochemistryLanthanide and Transition Metal ComplexesNanocluster Synthesis and ApplicationsMagnetism in coordination complexes