Robust synthesis of gold rhombic dodecahedra with well-controlled sizes and their optical properties

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Through the seed-mediated growth method in N,N-dimethylformamide (DMF)-water medium using trisodium citrate and poly(vinyl pyrrolidone) (PVP) as stabilizer, Au rhombic dodecahedra with a narrow size distribution (< 5% in standard deviation) and high shape yield (> 90%) could be reproducibly synthesized thanks to the robust formation of rhombic dodecahedra by DMF-water medium and surface stabilization by trisodium citrate. Moreover, the edge lengths of these Au rhombic dodecahedra could be readily controlled from 19 to 67 nm by varying the amount of seeds, concentration of HAuCl4, or both, and thus the localized surface plasmon resonance peak positions of the Au rhombic dodecahedra could be continuously tuned from 532 to 655 nm.
Publisher
ROYAL SOC CHEMISTRY
Issue Date
2013-01
Language
English
Article Type
Article
Keywords

SHAPE-CONTROLLED SYNTHESIS; METAL NANOCRYSTALS; AU NANOPARTICLES; OCTAHEDRA; NANOCUBES; NANOSTRUCTURES; CHEMISTRY; FACETS; GROWTH

Citation

CRYSTENGCOMM, v.15, no.2, pp.252 - 258

ISSN
1466-8033
DOI
10.1039/c2ce25598g
URI
http://hdl.handle.net/10203/103498
Appears in Collection
CBE-Journal Papers(저널논문)
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