Gram-scale synthesis of soluble, near-monodisperse gold nanorods and other anisotropic nanoparticles.
An aqueous surfactant-based colloidal chemical method is reported for the synthesis of anisotropic noble-metal nanoparticles on the milligram to multigram scale. Fine control of the nucleation-growth kinetics and rodlike micelle-induced breaking of symmetry at the early stage of particle growth are responsible for high-quality anisotropic nanoparticles. Near-monodisperse gold and silver nanorods, spheroids, nanowires, platelets, or cubes of 4-50 nm dimension and controllable aspect ratio can be prepared. The method may also be extended to semiconductor systems.
Jana
Nikhil R
NR
Department of Chemistry, Raja Rammohun Roy Mahavidyalaya, Radhanagar-712406, Hooghly, WB, India. nikhil@ibn.a-star.edu.sg
D016880:Anisotropy; D019187:Cadmium Compounds / Q000737:chemistry; D006046:Gold / Q000737:chemistry*; D007700:Kinetics; D008422:Materials Testing; D053768:Metal Nanoparticles / Q000737:chemistry*; D008823:Micelles; D046529:Microscopy, Electron, Transmission; D053758:Nanoparticles / Q000737:chemistry*; D049329:Nanostructures / Q000737:chemistry*; D036103:Nanotechnology / Q000295:instrumentation* / Q000379:methods*; D053770:Nanowires / Q000737:chemistry*; D018036:Selenium Compounds / Q000737:chemistry; D012834:Silver / Q000737:chemistry; D013440:Sulfides / Q000737:chemistry; D013696:Temperature
D019187:Cadmium Compounds; D008823:Micelles; D018036:Selenium Compounds; D013440:Sulfides; C034939:cadmium sulfide; D012834:Silver; D006046:Gold; C058667:cadmium selenide