Simultaneous Exfoliation and Functionalization of 2H-MoS 2 by Thiolated Surfactants: Applications in Enhanced Antibacterial Activity
Two-dimensional transition metal dichalcogenides (TMDs), such as MoS , generally exist in two different polymorphic structures, metallic (1T phase) and semiconducting (2H phase). In context of their wide spectrum of applications ranging from electronic to biomedicine, the aspects of ligand conjugati...
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| Published in: | Journal of the American Chemical Society 2018-10, Vol.140 (39), p.12634-12644 |
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| Main Authors: | , , , |
| Format: | Article |
| Language: | eng |
| Online Access: | Get full text |
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| Summary: | Two-dimensional transition metal dichalcogenides (TMDs), such as MoS
, generally exist in two different polymorphic structures, metallic (1T phase) and semiconducting (2H phase). In context of their wide spectrum of applications ranging from electronic to biomedicine, the aspects of ligand conjugation and solution processability are highly significant. In addition, the assessment of their antibacterial property and biocompatibility is equally important to explore their biomedical applications. Here we report a new method for the exfoliation and direct functionalization of 2H-MoS
using surfactant molecules with thiol functionality. We found that the exfoliated MoS
using thiolated ligands are functionalized with desired functionality and the processing scheme can be extended to other TMDs. Functionalized 2H-MoS
exhibits highly enhanced antibacterial efficiency compared to similarly functionalized metallic 1T-MoS
against pathogenic bacteria. The newly synthesized functionalized 2H-MoS
exhibits better hemocompatibility, which makes it suitable for in vivo applications. This convenient functionalization method opens the door for many other applications of functionalized semiconducting 2H-MoS
and other TMDs. |
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| ISSN: | 0002-7863 1520-5126 |