Abstract
The first CdSe/ZnS quantum dot photoluminescence lifetime-based pH nanosensor has been developed. The average lifetime of mercaptopropionic acid-capped QD nanosensors showed a linear response in the pH range of 5.2-6.9. These nanosensors have been satisfactorily applied for pH estimation in simulated intracellular media, with high sensitivity and high selectivity toward most of the intracellular components.
MeSH terms
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Animals
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Biocompatible Materials / chemistry
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Cadmium Compounds / chemistry
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Cattle
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Chemistry Techniques, Analytical / instrumentation*
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Hydrogen-Ion Concentration
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Intracellular Space / chemistry
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Luminescent Measurements*
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Nanotechnology / methods*
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Quantum Dots*
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Selenium Compounds / chemistry
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Solubility
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Sulfides / chemistry
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Time Factors
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Water / chemistry
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Zinc Compounds / chemistry
Substances
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Biocompatible Materials
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Cadmium Compounds
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Selenium Compounds
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Sulfides
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Zinc Compounds
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Water
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cadmium selenide
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zinc sulfide