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Site-selective oxidation of monolayered liquid-exfoliated WS2 by shielding the basal plane through adsorption of a facial amphiphile

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In recent years, various functionalization strategies for transition-metal dichalcogenides have been explored to tailor the properties of materials and to provide anchor points for the fabrication of hybrid structures. Herein, new insights into the role of the surfactant in functionalization reactio...

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Main Authors: Grieger, Sebastian (Author) , Szydłowska, Beata Maria (Author) , Rao, Vaishnavi J. (Author) , Steinmann, Eva (Author) , Dodds, Marcus (Author) , Gholamvand, Zahra (Author) , Duesberg, Georg S. (Author) , Zaumseil, Jana (Author) , Backes, Claudia (Author)
Format: Article (Journal)
Language:English
Published: 2020
In: Angewandte Chemie
Year: 2020, Volume: 132, Issue: 33, Pages: 13889-13896
ISSN:1521-3757
DOI:10.1002/ange.202005730
Online Access:Verlag, kostenfrei, Volltext: https://doi.org/10.1002/ange.202005730
Verlag, kostenfrei, Volltext: https://onlinelibrary.wiley.com/doi/abs/10.1002/ange.202005730
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Author Notes:Sebastian Grieger, Beata M. Szydłowska, Vaishnavi J. Rao, Eva Steinmann, Marcus Dodds, Zahra Gholamvand, Georg S. Duesberg, Jana Zaumseil, und Claudia Backes
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Summary:In recent years, various functionalization strategies for transition-metal dichalcogenides have been explored to tailor the properties of materials and to provide anchor points for the fabrication of hybrid structures. Herein, new insights into the role of the surfactant in functionalization reactions are described. Using the spontaneous reaction of WS2 with chloroauric acid as a model reaction, the regioselective formation of gold nanoparticles on WS2 is shown to be heavily dependent on the surfactant employed. A simple model is developed to explain the role of the chosen surfactant in this heterogeneous functionalization reaction. The surfactant coverage is identified as the crucial element that governs the dominant reaction pathway and therefore can severely alter the reaction outcome. This study shows the general importance of the surfactant choice and how detrimental or beneficial a certain surfactant can be to the desired functionalization.
Item Description:Endgültige Fassung online: 25. Juni 2020
Im Titel ist "2" bei "WS" tiefgestellt
Gesehen am 09.11.2021
Physical Description:Online Resource
ISSN:1521-3757
DOI:10.1002/ange.202005730

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