Fig. 4: Ligand effect on CaF2 NC’s growth mechanism. | Nature Communications

Fig. 4: Ligand effect on CaF2 NC’s growth mechanism.

From: In situ NMR reveals real-time nanocrystal growth evolution via monomer-attachment or particle-coalescence

Fig. 4

a Schematic illustration of the real-time synthesis of Cit-CaF2 NCs in water and of the molecular structure of citrate. b 19F-NMR spectra from three different time points during the reaction (6 min, 200 min, and 1000 min), showing the deconvoluted signals of 19F atoms on the surface (pink) and in the core (blue) in addition to the peak at −120 ppm assigned to free F- ions. c Size evolution of Cit-CaF2 NCs in water from a real-time, high-resolution 19F-NMR data set. d Concentration of Cit-CaF2 NCs (multiply by 105 in the graph) in water (left axis, black) or F- ion consumption (right axis, light blue) as a function of the reaction time.

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