Abstract
A new room-temperature phosphorescence (RTP) mercury ions sensor has been developed based on cetyltrimethylammonium bromide-capped Mn-doped ZnS quantum dots (CTAB/Mn-ZnS QDs) and label-free thymine (T)-rich aptamer. The formed T-Hg(2+)-T dsDNA can linearly quench the RTP of Mn-ZnS QDs through electron transfer and aggregation effect, and give a detection limit of 1.5 nM.
Publication types
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Research Support, Non-U.S. Gov't
MeSH terms
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Aptamers, Nucleotide / chemistry*
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Cetrimonium
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Cetrimonium Compounds / chemistry
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DNA / chemistry
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Ions / chemistry
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Manganese / chemistry
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Mercury / analysis*
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Quantum Dots*
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Spectrophotometry, Ultraviolet*
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Sulfides / chemistry
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Temperature
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Thymine / chemistry
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Zinc Compounds / chemistry
Substances
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Aptamers, Nucleotide
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Cetrimonium Compounds
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Ions
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Sulfides
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Zinc Compounds
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Manganese
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DNA
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Mercury
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zinc sulfide
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Thymine
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Cetrimonium