Jump to main content
Jump to site search
Access to RSC content Close the message box

Continue to access RSC content when you are not at your institution. Follow our step-by-step guide.


Issue 7, 2019
Previous Article Next Article

Mechanistic insight into the formation of colloidal WS2 nanoflakes in hot alkylamine media

Author affiliations

Abstract

Developing convenient and reliable synthetic methodologies for solution processable 2D layered ultrathin nanostructures with lateral size control is one of the major challenges for practical applications. In this study, a rational understanding a long-chain amphiphilic surfactant assisted non-hydrolytic synthesis that is able to generate dimension-controllable 2D-WS2 nanocrystal flakes in a single-step protocol is proposed. The evolution of the starting soft organic–inorganic lamellar template into ultrathin few-layer 2D-WS2 nanostructures with lateral size modulation over a range between 3 and 30 nm is monitored. The initial formation of WS2 nanoseeds occurs in a self-assembled sacrificial precursor source, acting as a template, where larger two-dimensional nanostructures can grow without undergoing significant thickness variation. Overall, the chemical nature and steric hindrance of the alkylamines are essential to modulate the reactivity of such WS2 nanoclusters, which correlate with the lateral size of the resulting nanoflakes.

Graphical abstract: Mechanistic insight into the formation of colloidal WS2 nanoflakes in hot alkylamine media

Back to tab navigation

Supplementary files

Article information


Submitted
03 May 2019
Accepted
23 May 2019
First published
24 May 2019

This article is Open Access

Nanoscale Adv., 2019,1, 2772-2782
Article type
Paper

Mechanistic insight into the formation of colloidal WS2 nanoflakes in hot alkylamine media

R. Scarfiello, A. Cesari, D. Altamura, S. Masi, C. Nobile, F. Balzano, C. Giannini, V. Grillo, A. H. Tavabi, R. E. Dunin-Borkowski, G. Uccello-Barretta, P. D. Cozzoli and A. Rizzo, Nanoscale Adv., 2019, 1, 2772
DOI: 10.1039/C9NA00279K

This article is licensed under a Creative Commons Attribution 3.0 Unported Licence. Material from this article can be used in other publications provided that the correct acknowledgement is given with the reproduced material.

Reproduced material should be attributed as follows:

  • For reproduction of material from NJC:
    [Original citation] - Published by The Royal Society of Chemistry (RSC) on behalf of the Centre National de la Recherche Scientifique (CNRS) and the RSC.
  • For reproduction of material from PCCP:
    [Original citation] - Published by the PCCP Owner Societies.
  • For reproduction of material from PPS:
    [Original citation] - Published by The Royal Society of Chemistry (RSC) on behalf of the European Society for Photobiology, the European Photochemistry Association, and RSC.
  • For reproduction of material from all other RSC journals:
    [Original citation] - Published by The Royal Society of Chemistry.

Information about reproducing material from RSC articles with different licences is available on our Permission Requests page.


Social activity

Search articles by author

Spotlight

Advertisements