Abstract
Semiconductor quantum dots are superlattices consisting of few to several thousand atoms. The unique optical and electronic properties of these structures can be effectively utilized in applications such as biolabeling, sensing, and therapeutic purposes. Colloidally stable quantum dots are typically prepared in organic solvents, and therefore subsequent transfer to aqueous medium is required for biological applications. This can be achieved by various ways including ligand exchange, ligand modification, surface coating, and encapsulation methods. The phase transfer may also be ensued by the surface functionalization of these colloidally stable dots by linking various molecules to the surface. Different techniques can be used to purify the modified quantum dots. Careful selection of reaction parameters, such as linker to nanoparticle ratio, may also help in obtaining discrete number of biomolecules linked to the surface. Finally, surface functionalized dots can be used for more intricate problems such as analyte sensing, DNA labeling, protein encoding.
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Acknowledgments
G.K. is grateful to the State Program of the Republic of Moldova, project 20.80009.5007.02, for supporting his research. F. A. is grateful to Higher Education Commission, Pakistan, HEC-NRPU grant # 10653 for supporting his research.
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Amin, F., Ali, Z., Korotcenkov, G. (2023). II-VI Quantum Dots and Their Surface Functionalization. In: Korotcenkov, G. (eds) Handbook of II-VI Semiconductor-Based Sensors and Radiation Detectors. Springer, Cham. https://doi.org/10.1007/978-3-031-19531-0_14
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