Thermogravimetric analysis has been performed on completely dried NMLs in an attempt to determine both the ligand identity and the ligand density on the WS2 surface. This is made possible by the unique decomposition temperature for each different thiol and for OAm (Figures and). After synthesis, the final product is a mixture of WS2 nanosheets with ligands on their surface. In good accordance with PXRD results, TGA shows that WS2 synthesized using different thiols and from pure OAm have the same ligands decomposition temperature onset. The first derivative of the TGA curves determines the temperature at which the greatest rate of change in the weight loss happens. Figure shows these curves for WS2 nanosheets synthesized by ODT as the coordination agent, and for WS2 nanosheets synthesized using the pure OAm synthesis. This confirms that both samples have the same ligands on the surface, as both peaks are located at the same temperature (312°C).