Micropatterns of Ag 2 Se Nanocrystals

Silver selenide (Ag 2 Se) nanocrystals were synthesized solvothermally using a single source precursor silver selenite (Ag 2 SeO 3 ) in the presence of dimethyl formamide (DMF) in an autoclave. The effect of time and temperature on the crystalline and morphological behavior of the products was investigated. The interaction of Ag 2 SeO 3 with DMF resulted in the formation of Ag 2 Se nanoparticles, whereas mixed solvent of DMF and a few aliphatic alcohols (1:1 (v/v), at 165 °C for 24 h) yielded novel microstructures. The mixed combination containing methanol−DMF yielded fractal-like morphology, while hollow needle-shaped structures resulted from a ethanol−DMF mixture. Rod shaped structures having riblike morphology were obtained from propanol−DMF mixed solvent.