Convenient microemulsion route to star-shaped cadmium sulfide pattern at room temperature

Star-shaped US patterns, which were composed of rod-like nanoparticles with diameters of 4-7 nm and lengths ranging from 150 to 200 mu, were successfu lly prepared by a convenient microemulsion technique at room temperature. I t was found that the hydrophobic carbon chain of surfactant played an impor tant role in controlling the morphology of the product. The present conveni ent microemulsion method is relatively mild and low toxic. It may provide a new route to the production of other metal sulfide patterns at room temper ature. (C) 2001 Elsevier Science Ltd. All rights reserved.