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Synthesis and Optical Properties of Gold Nanodecahedra with Size Control
Author(s) -
SánchezIglesias A.,
PastorizaSantos I.,
PérezJuste J.,
RodríguezGonzález B.,
García de Abajo F. J.,
LizMarzán L. M.
Publication year - 2006
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.200600475
Subject(s) - materials science , yield (engineering) , octahedron , dimethylformamide , morphology (biology) , crystallography , nanotechnology , optics , crystal structure , composite material , physics , chemistry , organic chemistry , solvent , biology , genetics
Regular gold nanodecahedra (pentagonal bipyramids) are obtained in high yield through ultrasound‐induced reduction of HAuCl 4 by dimethylformamide on presynthesized seeds (see figure). A dependence of the final morphology on the crystalline structure of the seeds is demonstrated by growing gold on single‐crystal platinum nanoparticles, which yields uniform octahedra. Resolution of Maxwell's equations for bicones shows good agreement with experimental optical properties.