A high-nuclearity Cd(ii)–Nd(iii) nanocage for the rapid ratiometric fluorescent detection of quercetin

Abstract

A NIR luminescent Cd(II)–Nd(III) nanocage 1 was synthesized from a new long-chain Schiff base ligand. The cage dimensions are about 2.4 × 2.4 × 2.4 nm, which allow direct visualization by TEM. 1 exhibits rapid and stable ratiometric fluorescent response to Que with high sensitivity. The quenching constants of Que to the ligand-centered and lanthanide emissions of 1 are 1.7 × 105 M−1 and 8.1 × 104 M−1, respectively. The detection limits to Que are 1.8 μM for the ligand-centered emission and 3.7 μM for the lanthanide luminescence. The response behavior of 1 to Que is not influenced by some potential interferents such as biomolecules and ions.

Graphical abstract: A high-nuclearity Cd(ii)–Nd(iii) nanocage for the rapid ratiometric fluorescent detection of quercetin

Supplementary files

Article information

Article type
Paper
Submitted
21 Apr 2022
Accepted
23 May 2022
First published
24 May 2022

CrystEngComm, 2022, Advance Article

A high-nuclearity Cd(II)–Nd(III) nanocage for the rapid ratiometric fluorescent detection of quercetin

Y. Ma, X. Yang, X. Leng, X. Liu and D. Schipper, CrystEngComm, 2022, Advance Article , DOI: 10.1039/D2CE00556E

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