Table 1. The relative molar ratio of ligands (oleic acid, dodecanethiol, and NS-BP) attached to the surface of CuInS2/ZnS quantum dots before and after the partial ligand-exchange step. Estimation was done based on the areal ratio of peaks corresponding to each ligands in the NMR spectra

mol% Oleic acid Dodecanethiol NS-BP
Before exchange 17.9 82.1 -
After exchange 13.5 81.1 5.4