Comparison of the surface-enhanced Raman scattering on sharp and truncated silver nanocubes
Comparison of the surface-enhanced Raman scattering on sharp and truncated silver nanocubes
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DOI：
10.1016/j.cplett.2006.05.111
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发表时间：
2006-08-18
影响因子：
2.8
通讯作者：
Xia, Younan
中科院分区：
文献类型：
--
作者：
McLellan, Joseph M.;Siekkinen, Andrew;Xia, Younan
尖锐和截断的银纳米立方体的大小从60到100纳米的合成，和表面增强拉曼散射（Sers）的活动，这些纳米粒子的大小和形状（即尖锐与截断）使用514或785 nm的激光进行比较。观察到两种趋势：（i）较大的颗粒（90和100 nm）被发现具有较高的Sers效率，并且（ii）具有成形角的颗粒比其截断的对应物给出更强的Sers信号。增强因子的差异主要归因于激光源和表面等离子体共振（SPR）带之间的重叠的变化作为截断的大小和程度的函数。(c)2006 Elsevier B.V.保留所有权利。
Sharp and truncated Ag nanocubes ranging from 60 to 100 nn in size were synthesized, and the surface-enhanced Raman scattering (SERS) activities of these nanoparticles were compared with respect to both size and shape (i.e. sharp vs. truncated) using 514 or 785 nm lasers. Two trends were observed: (i) larger particles (90 and 100 nm) were found to have higher SERS efficiencies, and (ii) particles with shaper corners gave more intense SERS signals than their truncated counterparts. The difference in enhancement factor was mainly attributed to the variation in overlap between the laser source and surface plasmon resonance (SPR) bands as a function of size and degree of truncation. (c) 2006 Elsevier B.V. All rights reserved.