Facile, large scale synthesis of water soluble AgInSe2/ZnSe quantum dots and its cell viability assessment on different cell lines

Oluwafemi, Oluwatobi S.; May, Bambesiwe M.; Parani, Sundararajan; Tsolekile, Ncediwe

doi:10.1016/j.msec.2019.110181

Cited by 42 publications

(22 citation statements)

References 27 publications

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“…When stable selenide precursors such as SeO 2 , 19 Na 2 SeO 3 (ref. 39) or Se 0 (ref. 1, 13 and 40) are used, the introduction of a strong reductant is needed, typically NaBH 4 , to convert selenium from a deeper oxidation state to Se 2À in situ and form AISe QDs.…”

Section: Introductionmentioning

confidence: 99%

“…1, 13 and 40) are used, the introduction of a strong reductant is needed, typically NaBH 4 , to convert selenium from a deeper oxidation state to Se 2À in situ and form AISe QDs. 11,39 In such conditions the process of QD growth is only partially controlled and the PL QYs achieved by this approach are typically very low (for core AISe QDs). 11,39 By combining chelating capacities of thioglycolic acid (TGA) and gelatin as stabilizers, aqueous NIR-emitting core-shell AISe/ZnS colloidal QDs with PL QYs of 10-20% were produced.…”

Section: Introductionmentioning

confidence: 99%

“…11,39 In such conditions the process of QD growth is only partially controlled and the PL QYs achieved by this approach are typically very low (for core AISe QDs). 11,39 By combining chelating capacities of thioglycolic acid (TGA) and gelatin as stabilizers, aqueous NIR-emitting core-shell AISe/ZnS colloidal QDs with PL QYs of 10-20% were produced. 40 Another option is the recently reported electrochemical in situ reduction of selenium to Se 2À which then reacts with Ag I -GSH and In III -GSH complexes.…”

Section: Introductionmentioning

confidence: 99%

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Ultra-small aqueous glutathione-capped Ag–In–Se quantum dots: luminescence and vibrational properties

et al. 2020

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Ultra-small aqueous glutathione-capped Ag–In–Se quantum dots: luminescence and vibrational properties

et al. 2020

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“…Ternary QD synthesis at a large-scale is still a challenge, due to the parameters obtained at laboratory conditions differing when they are produced in high amounts. The most common approach to large-scale synthesis is in pressure cookers, which is a variant of the solvothermal synthesis in which CuInS 2 , AgInS 2 , and CuInSe 2 have been synthesized with a volume obtained of 4 L [ 61 , 62 ].…”

Section: Synthesis Of Ternary Quantum Dotsmentioning

confidence: 99%

Ternary Quantum Dots in Chemical Analysis. Synthesis and Detection Mechanisms

et al. 2021

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Ternary quantum dots (QDs) are novel nanomaterials that can be used in chemical analysis due their unique physicochemical and spectroscopic properties. These properties are size-dependent and can be adjusted in the synthetic protocol modifying the reaction medium, time, source of heat, and the ligand used for stabilization. In the last decade, several spectroscopic methods have been developed for the analysis of organic and inorganic analytes in biological, drug, environmental, and food samples, in which different sensing schemes have been applied using ternary quantum dots. This review addresses the different synthetic approaches of ternary quantum dots, the sensing mechanisms involved in the analyte detection, and the predominant areas in which these nanomaterials are used.

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“…Quantum dots (QDs) are semiconductor nanomaterials with inherent ability that allows them to emit fluorescence when exposed to light [5,6]. QDs have continued to receive more attention from researchers due to their unique optical, magnetic and photo-physical properties which made them useful as biomedical materials, solar cells, catalyst and so on [7].…”

Section: Introductionmentioning

confidence: 99%

Synthesis strategies and application of ternary quantum dots — in cancer therapy

Aladesuyi

Oluwafemi

2020

Nano-Structures & Nano-Objects

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Semiconductor nanoparticles also known as quantum dots (QDs) have continued to receive more attention from researchers due to their unique optical, magnetic and photo physical properties which made them useful as biomedical materials, solar cells, catalyst etc. However, ternary I-III-VI QDs have shown to be a safer alternative to the binary II-VI or IV-VI QDs due to the absent of heavy toxic elements such as Cd and Pb. Cancer management and therapy in Africa has been bedevilled by a lot of challenges such as inaccurate diagnosis and ineffective therapeutic methods. Therefore, the need to develop an appropriate approach for cancer detection and treatment is of paramount importance. Tunable optical properties and absorption in the near infra-red region of the ternary QDs makes them useful as fluorescent probes in cancer detection and treatment. They have the ability to detect specific cancer cells including those that are not easily detected by modern imaging technique. Also, properties such as non-bleaching, stability, water solubility etc. made them a desirable fluorophore when compared to conventional dyes. Most cancer drugs suffer from inherent shortcomings such as limited absorption, insolubility and aggregation. However, these shortcomings can be overcome when these drugs are applied in form of conjugated systems. The use of QDs as conjugates has revolutionise the treatment of cancer in the 21st century. This review provides information about the synthesis strategies, optical properties, hydrophilization and bioconjugation of ternary I-III-VI QDs. Furthermore, we described the various biomedical applications in biosensors, bioimaging, drug delivery and phototherapeutic techniques. Finally, we looked at the challenges and future perspective of these QDs in cancer management.

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Facile, large scale synthesis of water soluble AgInSe2/ZnSe quantum dots and its cell viability assessment on different cell lines

Cited by 42 publications

References 27 publications

Ultra-small aqueous glutathione-capped Ag–In–Se quantum dots: luminescence and vibrational properties

Ultra-small aqueous glutathione-capped Ag–In–Se quantum dots: luminescence and vibrational properties

Ternary Quantum Dots in Chemical Analysis. Synthesis and Detection Mechanisms

Synthesis strategies and application of ternary quantum dots — in cancer therapy

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