Abstract
In the present work, the CdTe quantum dots were covalently conjugated with permethylated-β-cyclodextrin (OMe-β-CD) using 1-ethyl-3-(3-dimethylaminopropyl) carbodiimide hydrochloride as cross-linking reagent. The obtained functional quantum dots (OMe-β-CD/QDs) showed highly luminescent, water solubility and photostability as well as good inclusion ability to malachite green. A sensitive fluorescence method was developed for the analysis of malachite green in different samples. The good linearity was 2.0 × 10−7–1.0 × 10−5 mol/L and the limit of detect was 1.7 × 10−8 mol/L. The recoveries for three environmental water samples were 92.0–108.2 % with relative standard deviation (RSD) of 0.24–1.87 %, while the recovery for the fish sample was 94.3 % with RSD of 1.04 %. The results showed that the present method was sensitive and convenient to determine malachite green in complex samples.
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Acknowledgments
We are grateful to Dr. **ao-hua **ao from Sun Yat-sen University for his helpful advice. This work was supported by the National Natural Science Foundation of China (No.21275056).
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Cao, Y., Wei, J., Wu, W. et al. Permethylated-β-Cyclodextrin Capped CdTe Quantum Dot and its Sensitive Fluorescence Analysis of Malachite Green. J Fluoresc 25, 1397–1402 (2015). https://doi.org/10.1007/s10895-015-1630-1
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DOI: https://doi.org/10.1007/s10895-015-1630-1