Solvethermal synthesis of mono- and bi-metallic flower-like infinite coordination polymer and formation mechanism

The mono- and bi-metallic flower-like infinite coordination polymer were synthesized by simple coordination-modulation method using sodium acetate as capping agent. The structure was characterized using X-ray powder diffraction (XRD), scanning electron microscopy (SEM), and transmission electron microscopy (TEM). Based on a series of comparative experimental results, we have deduced that the possible formation mechanism of these Dy-flower-like microspheres via a three-step process.

The mono- and bi-metallic flower-like infinite coordination polymer were synthesized by simple coordination modulation method using sodium acetate as capping agent. The possible formation mechanism of these Dy-flower-like superstructure have been deduced via a three-step process: 1. Generation of enormous amount of nanoparticles. 2. Nanoparticles continuously aggregate into 2D nanoflakes owing to the Ostwald ripening, 3. The flower-like superstructures appear due to the fractal splitting growth.Figure optionsDownload as PowerPoint slideHighlights
► Coordination modulation induced synthesis of flower-like ICPs.
► Uniform microspheres built from packed layers of two dimensional microflakes.
► Microflakes split out from the center part and take on a flower-like appearance.
► The formation mechanism of flower-like superstructure has been deduced.