Fig. 3: Absorption properties of four solutions with four CdCl2 concentrations. | Nature Communications

Fig. 3: Absorption properties of four solutions with four CdCl2 concentrations.

From: Room-temperature formation of CdS magic-size clusters in aqueous solutions assisted by primary amines

Fig. 3

For the four solutions, the absorption spectra after 24 h of their preparation are shown in a and time-dependent absorbance of MSC-360 is summarized in b. In the solvent of BTA (1.5 mL) and water (1.5 mL), the four mixtures have the feed molar ratio of 2CdCl2-8MPA-20KOH-1TU with the CdCl2 concentrations of 2.0 (magenta trace for a and circular symbols for b), 4.0 (blue trace for a and square symbols for b), 6.0 (green trace for a and triangular symbols for b), and 10.0 mM (gray trace for a and diamond symbols for b). The spectra (a) are offset to have similar absorbance at 440 nm; the dashed line signifies the position of 356 nm. The absorbance of MSC-360 (b) is subtracted by the value at the corresponding wavelength evolved at 1 min; the solid lines in b are for visual guide. Obviously, the production of CdS MSC-360 is suppressed upon increasing the CdCl2 concentrations.

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