Fig. 4
From: Ion exchange: an advanced synthetic method for complex nanoparticles
(Reprinted with permission from American Chemical Society [55])
a A schematic of the cation exchange reaction initiating from CdSe NPs with various sizes, shapes, and crystalline phases. b A transmission electron microscopy image, optical absorption/emission spectra, and an X-ray diffraction pattern of cubic CdSe (black), FCC/tetragonal Cu2−xSe (red), and cubic ZnSe (blue) spherical NPs