The other modified factor is the amount of ODT in the reaction mixture. Although it is now quite clear that the dispersion does not improve due to the presence of ODT on the surface of the nanosheets, thiols nature and concentration adjust the reactivity of the tungsten precursor. Thus changing the amount of ODT in the reaction mixture shifts the mean size of the products. New colloidal protocols are then developed to synthesize colloidally stable and size-controlled 1T'-WS2 NMLs by controlling both the tungsten precursor reactivity with the amount of ODT and the nucleation rate by varying the injection time. TEM images of 1T'-WS2 nanosheets synthesized with these different protocols are shown in Figure . Decreasing the amount of ODT and increasing the injection time causes the NMLs to become larger. Figure present the absorption spectra of 1T'-WS2 NMLs with different sizes, which confirms the different sized NMLs are all semi-metallic polymorphs. A reduction in the amount of ODT decreases in the stability of the tungsten precursor that in turn increases the NMLs size. Furthermore, for this nucleation and growth mechanism, increasing the injection time dilute the reactant species at any time in the mixture, which decreases the nucleation rate and boosts the growth. Depending on the desired size of NMLs, the injection rate and amount of ODT can then be varied to finely control it.