Figure displays TEM images of the well-dispersed WS2 NMLs obtained using dodecanethiol (DDT). The homogenous contrast of different nanosheets supports that they are well-dispersed NMLs. However, Figure shows that regions exhibiting minor aggregation exist. Thiols with longer chains, specifically hexadecanethiol (HDT) and octadecanethiol (ODT), are also explored to investigate the effect of thiols on the nanosheets synthesis and dispersion. TEM images (Figures ) demonstrate that increasing the chain length of the alkanethiol decreases the mean-size of the NMLs and improves the dispersion. However, Figures show that the nanosheets synthesized by HDT are partially aggregated, whereas the use of ODT as the coordinating agent leads to the formation of well-dispersed nanomonolayers. Using thiols as the coordinating agent improves both the colloidal stability and the size dispersion. Figures show the monodisperse size dispersion of the WS2 NMLs synthesized by different thiols.