Morphogenesis of evaporation-induced self-assemblies of polypyrrole nanoparticles dispersed in a liquid medium.
Evaporation-induced self-assemblies (EISAs) with various morphologies were selectively fabricated by drying a solution containing polypyrrole nanoparticles. The morphogenesis of EISAs was strongly dependent upon the solvent evaporation rate and the nanoparticle concentration. In the case of fast evaporation, 2-D dendrites or pseudo 1-D dendrites were observed. When the liquid medium evaporated slowly, ring and spherulitic assemblies took place. Multiple rings could be created on a substrate surface under one single drop.
Jang
Jyongsik
J
Oh
Joon Hak
JH
D008956:Models, Chemical; D008968:Molecular Conformation; D049329:Nanostructures / Q000737:chemistry*; D011108:Polymers / Q000737:chemistry*; D011758:Pyrroles / Q000737:chemistry*; D012997:Solvents / Q000737:chemistry*; D014835:Volatilization
D011108:Polymers; D011758:Pyrroles; D012997:Solvents; C067635:polypyrrole