Total internal reflection sum-frequency generation spectroscopy and dense gold nanoparticles monolayer: a route for probing adsorbed molecules
Total internal reflection sum-frequency generation spectroscopy and dense gold nanoparticles monolayer: a route for probing adsorbed molecules
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全内反射和频发生光谱和致密金纳米颗粒单层：探测吸附分子的途径
DOI：
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发表时间：
2007
期刊：
影响因子：
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通讯作者：
A. Peremans
中科院分区：
文献类型：
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作者：
G. Tourillon;L. Dreesen;C. Volcke;Y. Sartenaer;P. Thiry;A. Peremans
我们表明，在全内反射配置（TIR-SFG）结合致密的金纳米粒子单层进行的和频产生光谱，使我们能够研究，具有良好的信噪比和高信号背景比，吸附分子的构象。十二烷乙烷（DDT）被用作探针分子，以评估的潜力的方法。一个以上的数量级的增强所产生的吸附物种的SFG信号观察与TIR的几何形状相比，外部反射一个，而SFG非共振的贡献仍然是相同的两种配置。虽然需要进一步的工作来充分了解纳米颗粒上SFG过程的起源，但我们的工作为研究纳米结构开辟了新的可能性。
We show that sum-frequency generation spectroscopy performed in the total internal reflection configuration (TIR–SFG) combined with a dense gold nanoparticles monolayer allows us to study, with an excellent signal to noise ratio and high signal to background ratio, the conformation of adsorbed molecules. Dodecanethiol (DDT) was used as probe molecules in order to assess the potentialities of the approach. An enhancement of more than one order of magnitude of the SFG signals arising from the adsorbed species is observed with the TIR geometry compared to the external reflection one while the SFG non-resonant contribution remains the same for both configurations. Although further work is required to fully understand the origin of the SFG process on nanoparticles, our work opens new possibilities for studying nanostructures.
影响因子：
15
作者：
Maxwell, DJ;Taylor, JR;Nie, SM
通讯作者：
Nie, SM