To quantify the relative stabilities of the II-VI LHs synthesized in this work, samples were sealed in two glass enclosures. In the first enclosure, the relative humidity (RH) was fixed at 50% using a saturated aqueous solution of MgNO3 (referred hereafter as the "humid environment"). The second enclosure was charged with sufficient molecular sieve to maintain a RH below 1% (referred to hereafter as the "dry environment"). Both enclosures were sealed in air and left at room temperature (22-23 °C) in a light-excluded environment for the duration of the experiment. Samples were analysed by DRS every 5 days over a period of 30 days to assess degradation over time (using colour change as a relative indication of degradation). The normalized average of diffuse reflectance in the visible region (400-700 nm) for samples in the humid environment are shown in Figure . To assess the impact of hydrophilicity on the rate of degradation, CA measurements were also carried out before and after the 30 days of exposure to humid and dry environments (Figures and and).