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Design and Synthesis of Nanosensor Based on CdSe Quantum Dots Functionalized with 8-Hydroxyquinoline: a Fluorescent
Bagher Eftekhari-Sis1, Khadijeh Samadneshan2, Saleh Vahdati-Khajeh2
1Department of Chemistry, University of Maragheh, Maragheh, 55181-83111, Iran. eftekharisis@maragheh.ac.ir.
Abstract:
A novel nanosensor based on CdSe quantum dots (QDs) capped with 8-hydroxyqunoline (HQ) was developed for Al3+ ions determination in aqueous solutions. The method is based on the fluorescence enhancement of the HQ functionalized QDs in the presence of Al3+ ions, due to the strong interaction between Al3+ and HQ. Prepared nanosensor exhibited an acceptable selectivity and sensitivity for Al3+ ions in the presence of other metal ions. Plot of Log(I/I0) against Log[Al3+] shows a good linearity in the range of 0.02-3.0 mM, and the method could be used for detection of Al3+ ions concentration in aqueous solutions.
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