DC Field | Value | Language |
---|---|---|
dc.contributor.author | Li, Cuncheng | ko |
dc.contributor.author | Shuford, Kevin L. | ko |
dc.contributor.author | Chen, Minghai | ko |
dc.contributor.author | Lee, Eun Je | ko |
dc.contributor.author | Cho, Sung Oh | ko |
dc.date.accessioned | 2013-03-08T08:17:41Z | - |
dc.date.available | 2013-03-08T08:17:41Z | - |
dc.date.created | 2012-02-06 | - |
dc.date.created | 2012-02-06 | - |
dc.date.issued | 2008-09 | - |
dc.identifier.citation | ACS NANO, v.2, no.9, pp.1760 - 1769 | - |
dc.identifier.issn | 1936-0851 | - |
dc.identifier.uri | http://hdl.handle.net/10203/92578 | - |
dc.description.abstract | A straightforward and effective polyol route for the controllable synthesis of high-quality gold (Au) octahedra with uniform size is presented in an ethylene glycol solution. Large-scale Au octahedra with the size ranging from tens to hundreds of nanometers; were selectively synthesized in high-yield. The surfaces of octahedral Au nanocrystals are smooth and correspond to {111} planes. Formation of Au nanooctahedra was attributed to the preferential adsorption of cationic surfactant poly(diallyldimethylammonium) chloride (PDDA) molecules on the {111} planes of Au nuclei that inhibited the growth rate along the < 111 > direction. The reduction rate of gold ions in the synthesis process can be rationally manipulated by acidic and basic solutions. This provides a facile and effective route to harvest Au octahedra with different dimensions. The synthetic strategy has the advantage of one-pot and requires no seeds, no foreign metal ions, and no pretreatment of the precursor, so that this is a practical method for controllable synthesis of Au octahedra. Size-dependent optical properties of Au octahedra were numerically and experimentally analyzed. The analysis shows that Au octahedra with sharp edges possess attractive optical properties, promising their applications to surface-enhancement spectroscopy, chemical or biological sensing, and the fabrication of nanodevices. | - |
dc.language | English | - |
dc.publisher | AMER CHEMICAL SOC | - |
dc.subject | DISCRETE-DIPOLE APPROXIMATION | - |
dc.subject | HIGH-YIELD SYNTHESIS | - |
dc.subject | PLASMON RESONANCES | - |
dc.subject | DIRECTED OXIDATION | - |
dc.subject | NANOCRYSTALS | - |
dc.subject | SILVER | - |
dc.subject | NANOPARTICLES | - |
dc.subject | SHAPE | - |
dc.subject | NANORODS | - |
dc.subject | NANOPRISMS | - |
dc.title | A facile polyol route to uniform gold octahedra with tailorable size and their optical properties | - |
dc.type | Article | - |
dc.identifier.wosid | 000259450300007 | - |
dc.identifier.scopusid | 2-s2.0-54249106332 | - |
dc.type.rims | ART | - |
dc.citation.volume | 2 | - |
dc.citation.issue | 9 | - |
dc.citation.beginningpage | 1760 | - |
dc.citation.endingpage | 1769 | - |
dc.citation.publicationname | ACS NANO | - |
dc.identifier.doi | 10.1021/nn800264q | - |
dc.contributor.localauthor | Cho, Sung Oh | - |
dc.contributor.nonIdAuthor | Li, Cuncheng | - |
dc.contributor.nonIdAuthor | Shuford, Kevin L. | - |
dc.contributor.nonIdAuthor | Chen, Minghai | - |
dc.contributor.nonIdAuthor | Lee, Eun Je | - |
dc.type.journalArticle | Article | - |
dc.subject.keywordAuthor | crystal growth | - |
dc.subject.keywordAuthor | gold | - |
dc.subject.keywordAuthor | octahedron | - |
dc.subject.keywordAuthor | polyol synthesis | - |
dc.subject.keywordAuthor | size tailoring | - |
dc.subject.keywordAuthor | surface plasmon resonance | - |
dc.subject.keywordPlus | DISCRETE-DIPOLE APPROXIMATION | - |
dc.subject.keywordPlus | HIGH-YIELD SYNTHESIS | - |
dc.subject.keywordPlus | PLASMON RESONANCES | - |
dc.subject.keywordPlus | DIRECTED OXIDATION | - |
dc.subject.keywordPlus | NANOCRYSTALS | - |
dc.subject.keywordPlus | SILVER | - |
dc.subject.keywordPlus | NANOPARTICLES | - |
dc.subject.keywordPlus | SHAPE | - |
dc.subject.keywordPlus | NANORODS | - |
dc.subject.keywordPlus | NANOPRISMS | - |
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