Tip-enhanced Raman scattering studies of histidine on novel silver substrates
Tip-enhanced Raman scattering studies of histidine on novel silver substrates
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DOI：
10.1002/jrs.2359
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发表时间：
2009-10-01
影响因子：
2.5
通讯作者：
Deckert, Volker
中科院分区：
文献类型：
--
作者：
Deckert-Gaudig, Tanja;Deckert, Volker
报道了组氨酸固定在原子平面银表面的尖端增强拉曼散射(TERS)实验。衬底由直径几微米、高度约20 nm的银纳米板组成。在这样的高度下，这些板对可见光波长仍然是透明的，这对最佳照明和检测非常重要。拉曼光谱结果有力地支持了化学上不同状态的组氨酸在银表面的均匀吸附。此外，从分子中的多配位中心出发，讨论了银表面和TERS尖端对组氨酸光谱的影响。版权所有(C)2009 John Wiley&Sons，Ltd.
Tip-enhanced Raman scattering (TERS) experiments of histidine immobilized on an atomically flat silver surface are presented. The substrate consists of silver nanoplates with a diameter of a few micrometers and a height about 20 nm. At such heights, the plates are still transparent to visible wavelengths, which is important for optimal illumination and detection. The Raman spectroscopic results strongly support a homogeneous adsorption of chemically different states of histidine on the silver surface. In addition, the influence of the silver surface and the TERS tip on the spectra of histidine is discussed with respect to the multiple coordination centers in the molecule. Copyright (C) 2009 John Wiley & Sons, Ltd.