期刊
JOURNAL OF PHYSICAL CHEMISTRY C
卷 117, 期 17, 页码 8916-8923出版社
AMER CHEMICAL SOC
DOI: 10.1021/jp401189k
关键词
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资金
- NSF Career Award
- Camille Dreyfus Teacher-Scholar Award
- Department of Chemistry of the University of Pennsylvania
- School of Arts and Sciences of the University of Pennsylvania
- Division Of Materials Research
- Direct For Mathematical & Physical Scien [0847646] Funding Source: National Science Foundation
Gold nanoshells with varying surface topographies and tunable SPR bands, synthesized in high yields by the templated surfactant assisted seed growth method. By changing the types and amounts of surfactants and ionic additives in the growth solution, the nanoshell topography was controlled from smooth shells to highly structured nanoshells composed of spherical nanoparticles or sharp spikes of varying aspect ratios. The SPR band of the nanoshells could be tuned over a wide range of wavelengths by varying the nanoshell topography, without significantly changing the amount of gold. Finite difference time domain (FDTD) modeling was used to predict and understand the optical properties of nanoshells composed of various subparticles, providing insight into the origins of the tunable SPR band.
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