Wiley, BJ and Xiong, YJ and Li, ZY and Yin, YD and Xia, YA (2006) Right bipyramids of silver: A new shape derived from single twinned seeds. NANO LETTERS, 6 (4). pp. 765-768.
Full text is not hosted in this archive but may be available via the Official URL, or by requesting a copy from the corresponding author.
Official URL: http://pubs.acs.org/doi/abs/10.1021/nl060069q
Silver nanoparticles with a single (1111) twin were selectively nucleated and grown for the first time to produce right bipyramids 75-150 nm in edge length. Key to the production of single twinned seeds was the addition of NaBr to a polyol synthesis in which AgNO3 is reduced by ethylene glycol in the presence of poly(vinyl pyrrolidone). Examination of nanoparticles; at different stages of the reaction with electron microscopy revealed that the spherical, single twinned seeds grew to become right bipyramids through enlargement of their (100) facets. The UV-vis-NIR spectrum exhibited by right bipyramids is distinct from that of any other silver nanostructure, and their sharp corners make these new nanoparticles especially promising for enhancement of Raman scattering.
|Subjects:||Physical Science > Photonics|
|Deposited By:||Lesley Tobin|
|Deposited On:||14 Jan 2009 14:05|
|Last Modified:||14 Jan 2009 14:05|
Repository Staff Only: item control page