Journal
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
Volume 1, Issue 1, Pages 24-27Publisher
AMER CHEMICAL SOC
DOI: 10.1021/jz900004h
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Funding
- Spanish Ministerio he Ciencia e Innovacion [MAT2007-62696, MAT2008-05755, 2010-CSD2006-12]
- Xunca de Galicia [PGIDITO6TMT31402PR, 08TMT008314PR]
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We report the formation of gold nanoparticles with a novel and useful morphology, comprising nanowires fully covered with sharp tips (thorned nanowires). The synthesis is based on a seeded-growth approach based the rapid overgrowth of ultrathin gold wires in N,N-dimethylformamide, in the presence of poly(vinylpyrrolidone). The process allows a fine control over the thickness of the final wires, as well as the tunability of the number and sharpness of the-thorns. These new plasmonic nanostructures display extremely strong optical enhancing properties and can be readily used as platforms for SERS and for integration in ultrasensitive optical devices.
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