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  • Title: Two cadmium(II) coordination polymers as multi-functional luminescent sensors for the detection of Cr(VI) anions, dichloronitroaniline pesticide, and nitrofuran antibiotic in aqueous media.
    Author: Fan L, Wang F, Zhao D, Sun X, Chen H, Wang H, Zhang X.
    Journal: Spectrochim Acta A Mol Biomol Spectrosc; 2020 Oct 05; 239():118467. PubMed ID: 32473560.
    Abstract:
    Two ternary cadmium(II) coordination polymers, with the formulas being {[Cd(tptc)0.5(bpz)(H2O)]·0.5H2O}n (CP 1), and [Cd(tptc)0.5(bpy)]n (CP 2), were designed through mixed ligands strategy. Benefiting from the excellent chemical stability and luminescent property, two Cd(II) CPs possessing efficient multi-functional fluorescent responses toward Cr(VI) anions, 2,6-dichloro-4-nitroaniline pesticide, and nitrofuran antibiotic in aqueous media with high sensitivity, selectivity, and excellent recyclable behaviors with the detection limits (LODs) are 235 ppb for CrO42- anion, 343 ppb for Cr2O72- anion, 112 ppb for DCN pesticide, 62 ppb for NFT antibiotic for CP 1, and 173 ppb for CrO42- anion, 270 ppb for Cr2O72- anion, 638 ppb for DCN pesticide, 184 ppb for NFT antibiotic for CP 2, respectively. Besides, the mechanisms of luminescence quenching were revealed from the viewpoint of internal filter effect (IFE) and photoinduced electron transfer (PET).
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