chemical kinetics of gold nanorod growth in aqueous ctab solutions | 量子荧光|微型光纤光谱仪-ag贵宾会

nanoparticle size and shape are often kinetically determined through a balance of the rates of nucleation to facet-specific growth or aggregative coarsening processes.1-3 the relative growth rates of the different nanocrystal facets can be regulated through nuclei structure, reaction conditions,4 and facet-specific adsorbate effects, to promote anisotropic nanocrystal structure growth.5,6 understanding of the chemical factors affecting the growth kinetics of anisotropic nanocrystals is desirable from both synthetic and mechanistic standpoints. herein, we present a systematic account of the chemical kinetics of nanoparticle growth for the facile silver-mediated synthesis of gold nanorods (aunrs) in aqueous hexadecyltrimethylammonium bromide (ctab) solution.7-9 aunrs are promising photothermal heat elements,10-12 contrast agents for biological imaging,13 and active media for optical data storage.14,15