Analytical applications of quantum dots: Their utilization in sensors, diagnostics and environmental monitoring
1 Department of Chemistry, College of Education for Pure Sciences, University of Kerbala, Iraq.
2 Department of Biology, College of Education for Pure Science, University of Kerbala, Iraq.
3 Misan University, College of pharmacy, Misan, Iraq.
Review
International Journal of Science and Technology Research Archive, 2025, 08(01), 079-087.
Article DOI: 10.53771/ijstra.2025.8.1.0027
Publication history:
Received on 21 January 2025; revised on 27 February 2025; accepted on 02 March 2025
Abstract:
Quantum dots are very small particles, about one nanometer across. They are made up of a heavy metal core, like cadmium selenium or cadmium telluride, an unreactive zinc sulfide shell, and a customizable outer coating of different bioactive molecules made for a certain use. Due to their unique chemical make-up and very small size, quantum dots have very stable fluorescent optical qualities that can be easily changed by changing their size or chemical make-up. If quantum dots are excited, they can give off light. The lighter the dot, the stronger the light it sends out. Since dots can be made to give off a range of colors, it seems likely that they could be used as biosensors. Quantum dots don't break down as quickly as the dyes that are currently used as biosensors.
Keywords:
Quantum dots; Fluorescence; FRET; Magnetic nanocomposites
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