A mesoporous silica-based probe with a molecularly imprinted polymer recognition and Mn:ZnS QDs@rhodamine B ratiometric fluorescence sensing strategy for the analysis of 4-nitrophenol. Issue 39 (26th September 2022)

• Record Type: Journal Article
• Authors: Luo, Jiao; Tan, Hongyan; Yang, Bin; Chen, Donghua; Fei, Junjie
• Is Part Of: Analytical methods. Volume 14:Issue 39(2022)
• Page Start: 3881
• Page End: 3889
• Publication Date: 2022-09-26
• Subjects: Chemistry, Analytic -- Periodicals; Analytical biochemistry -- Periodicals; Chemical laboratories -- Standards -- Periodicals; 543.1905
• DOI: 10.1039/d2ay01147f
• Languages: English
• ISSNs: 1759-9660

Abstract

Abstract : The ratiometric fluorescent responses of the MIP-coated Mn:ZnS QDs and RB co-doped MSN probe to 4-NP molecules led to the sensitive and selective detection of 4-NP in environmental water samples. Abstract : In this study, a mesoporous silica fluorescence probe co-doped with manganese-doped zinc sulfide quantum dots (Mn:ZnS QDs) and rhodamine B (RB) and coated with molecularly imprinted polymer (MIP) has been prepared by sol–gel methods. The morphology and structure were characterized in detail by transmission electron microscopy (TEM), Fourier transform-infrared absorption spectroscopy (FT-IR) and ultraviolet-visible absorption spectroscopy (UV-vis). The probe exhibited two characteristic emission peaks at 411 nm and 582 nm, and the synchronous ratiometric fluorescence responses F 411 / F 582 to different concentrations of 4-nitrophenol (4-NP) showed a good linear correlation in the range of 0.01–10 μmol L −1 besides achieving the sensitive detection of 4-NP with a detection limit as low as 3.0 nmol L −1 (3 σ ). The probe possesses the advantages of selectivity toward the target molecular structure, self-stability in the detection time domain and anti-interference ability, exhibiting excellent potential for application in 4-NP detection in different water environments.