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- W4310941638 abstract "Two-dimensional MoS2 nanosheets (2D-MoS2) have been widely used in many biological applications due to their distinctive physicochemical properties. Further, the development of surface modification using thiolated ligands allows us to use them for many specific applications. But the effect of possible ligand exchange on 2D-MoS2 has never been explored, which can play an important role in diverse biological applications. In this study, we have observed the ligand-exchange phenomenon on 2D-MoS2 in the presence of different thiolated ligands. The initial study proceeded with boron-dipyrromethene (BODIPY) functionalized MoS2 with different concentrations of glutathione (GSH), which is the most abundant thiol species in the cytoplasm of various cancer cells. It was found that in the presence of GSH the fluorescence of BODIPY can be regenerated, which is time and concentration dependent. We have also examined this phenomenon with different thiol ligands and transition-metal dichalcogenides (TMDs). We observed a variable rate of ligand exchange in different solvents, surface functionality, and receptor environments that helped us to construct sensor arrays. Interestingly, a ligand-exchange process was not observed in the presence of dithiols. Further, this concept was applied to a cancerous cell line for in vitro delivery. We found that BODIPY-functionalized 2D-MoS2 undergoes thiol exchange by intracellular GSH and subsequently enhanced the fluorescence in the cytoplasm of cancer cells. This strategy can be applied to the development of 2D-TMD-based materials for various biological applications related to ligand exchange." @default.
- W4310941638 created "2022-12-21" @default.
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- W4310941638 date "2022-12-08" @default.
- W4310941638 modified "2023-10-06" @default.
- W4310941638 title "Ligand Exchange on MoS<sub>2</sub> Nanosheets: Applications in Array-Based Sensing and Drug Delivery" @default.
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- W4310941638 doi "https://doi.org/10.1021/acsnano.2c06994" @default.
- W4310941638 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/36482513" @default.
- W4310941638 hasPublicationYear "2022" @default.
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