Journal
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
Volume 588, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.colsurfa.2019.124378
Keywords
CQDs; MOFs; Fluorescence probe; Selectively; Metal ions
Categories
Funding
- Natural Science Foundation of Hubei province [2017CFB530]
- Wuhan Morning Light Plan of Youth Science and Technology [2017050304010282]
- Ministry-of-Education Key Laboratory for the Synthesis and Application of Organic Function Molecules, Hubei University
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In this study, 2-amino-terephthalic acid was designed for construction of MOFs, and carbon quantum dots (CQDs) were designed to activate the Metal Organic Frameworks (MOFs) to be used as fluorescent sensor for selectively detection for Fe3+ and Cu2+, enhancing the fluorescence to an on state by the hybrid with CQDs in the MOFs as activating agent; quenching the fluorescence to an off state by removal of CQDs through the metal competitive coordination substitution strategy. Using this strategy, the prepared CQDs/MOFs material can be used as a fluorescence on-off probe for highly sensitive detection of Fe3+ and Cu2+ in aqueous solution. It was found that the LOD of CQDs/MOFs for sensing Fe3+ and Cu2+ were 2.3 ppb and 1.3 ppb, respectively. It was proved that the CQDs/MOFs has little cytotoxicity to 4T-1 cells, indicating the potential application in the detection for Fe3+ and Cu2+ ions in cells.
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