Construction of a CdTb nanoring for luminescence response to 2,6-dipicolinic acid as an anthrax biomarker

A Cd 8 Tb 4 nanoring ( 1 ) (molecular sizes: 1.2 × 2.8 × 2.8 nm) was constructed by the use of a flexible Schiff base ligand. It displays response to DPA by the enhancement of lanthanide luminescence and the decrease of ligand-centered emission, which can be directly observed by naked eyes. The dete...

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Published in:CrystEngComm 2022-06, Vol.24 (24), p.4361-4365
Main Authors: Ma, Yanan, Yang, Xiaoping, Leng, Xilong, Schipper, Desmond
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Summary:A Cd 8 Tb 4 nanoring ( 1 ) (molecular sizes: 1.2 × 2.8 × 2.8 nm) was constructed by the use of a flexible Schiff base ligand. It displays response to DPA by the enhancement of lanthanide luminescence and the decrease of ligand-centered emission, which can be directly observed by naked eyes. The detection limit of 1 to DPA is 10.7 μmol L −1 . The luminescence sensitivity of 1 towards DPA is not influenced by the existence of interferents, for example, aromatic carboxylates and ions. One 12-metal Cd( ii )-Tb( iii ) nanoring (1.2 × 2.8 × 2.8 nm) was constructed from a flexible Schiff base ligand, and it shows luminescent response to 2,6-dipicolinic acid with high sensitivity and selectivity.
ISSN:1466-8033
DOI:10.1039/d2ce00502f