TY  - JOUR
AU  - Scarfiello, Riccardo
AU  - Cesari, Andrea
AU  - Altamura, Davide
AU  - Masi, Sofia
AU  - Nobile, Concetta
AU  - Balzano, Federica
AU  - Giannini, Cinzia
AU  - Grillo, Vincenzo
AU  - Tavabi, Amir H.
AU  - Dunin-Borkowski, Rafal E.
AU  - Uccello-Barretta, Gloria
AU  - Cozzoli, P. Davide
AU  - Rizzo, Aurora
TI  - Mechanistic insight into the formation of colloidal WS 2 nanoflakes in hot alkylamine media
JO  - Nanoscale advances
VL  - 1
IS  - 7
SN  - 2516-0230
CY  - Cambridge
PB  - Royal Society of Chemistry
M1  - FZJ-2020-02664
SP  - 2772 - 2782
PY  - 2019
AB  - 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
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000478576700032
DO  - DOI:10.1039/C9NA00279K
UR  - https://juser.fz-juelich.de/record/878151
ER  -