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Towards high quality triangular silver nanoprisms: improved synthesis, six-tip based hot spots and ultra-high local surface plasmon resonance sensitivity
Xue, B.; D. Wang; J. Zuo; X. G. Kong; Y. L. Zhang; X. M. Liu; L. P. Tu; Y. L. Chang; C. X. Li; F. Wu; Q. H. Zeng; H. F. Zhao; H. Y. Zhao and H. Zhang
2015
发表期刊Nanoscale
卷号7期号:17页码:8048-8057
摘要The great application potential of triangular silver nanoprisms (TSNPRs, also referred to as triangular silver nanoplates) is hampered by the lack of methods to produce well-defined tips with high monodispersity, with easily removable ligands. In this work, a simple one-step plasmon-mediated method was developed to prepare monodisperse high-quality TSNPRs. In this approach, the sole surface capping agent was the easily removable trisodium citrate. Differing from common strategies using complex polymers, OH-ions were used to improve the monodispersity of silver seeds, as well as to control the growth process through inhibiting the oxidation of silver nanoparticles. Using these monodisperse high-quality TSNPRs as building blocks, self-assembled TSNPRs consisting of six-tip based "hot spots" were realized for the first time as demonstrated in a high enhancement (similar to 10(7)) of surface-enhanced Raman scattering (SERS). From the plasmon band shift versus the refractive index, ultra-high local surface plasmon resonance sensitivity (413 nm RIU-1 or 1.24 eV RIU-1, figure of merit (FOM) = 4.59) was reached at similar to 630 nm, making these materials promising for chemical/biological sensing applications.
收录类别SCI ; EI
文献类型期刊论文
条目标识符http://ir.ciomp.ac.cn/handle/181722/55491
专题中科院长春光机所知识产出
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Xue, B.,D. Wang,J. Zuo,et al. Towards high quality triangular silver nanoprisms: improved synthesis, six-tip based hot spots and ultra-high local surface plasmon resonance sensitivity[J]. Nanoscale,2015,7(17):8048-8057.
APA Xue, B..,D. Wang.,J. Zuo.,X. G. Kong.,Y. L. Zhang.,...&H. Y. Zhao and H. Zhang.(2015).Towards high quality triangular silver nanoprisms: improved synthesis, six-tip based hot spots and ultra-high local surface plasmon resonance sensitivity.Nanoscale,7(17),8048-8057.
MLA Xue, B.,et al."Towards high quality triangular silver nanoprisms: improved synthesis, six-tip based hot spots and ultra-high local surface plasmon resonance sensitivity".Nanoscale 7.17(2015):8048-8057.
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