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.
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Official URL: http://pubs.acs.org/doi/abs/10.1021/nl060069q
Abstract
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.
| Item Type: | Article |
|---|---|
| Subjects: | Physical Science > Photonics |
| ID Code: | 2768 |
| Deposited By: | Lesley Tobin |
| Deposited On: | 14 Jan 2009 14:05 |
| Last Modified: | 14 Jan 2009 14:05 |
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