Ion/Surface Reactions at Monolayers in Solution: A Combined Surface Enhanced Raman–X-Ray Photoelectron Spectroscopic Investigation of the Chemical Modification of a 2-Mercaptobenzothiazole Monolayer on Polycrystalline Au Films

Sequential plasma processes combined with specific lithographic methods allow for the fabrication of advanced material structures. In the present work, we used self-assembled colloidal monolayers as lithographic structures for the conformation of ordered Si submicrometer pillars by reactive ion etching. We explored different discharge conditions to optimize the Si pillar geometry. Selected structures were further decorated with gold by conventional sputtering, prior to colloidal monolayer lift-off. The resulting structures consist of a gold crown, that is, a cylindrical coating on the edge of the Si pillar and a cavity on top. We analysed the Au structures in terms of electronic properties by using X-ray absorption spectroscopy (XAS) prior to and after post-processing with thermal annealing at 300 °C and/or interaction with a gold etchant solution (KI). The angular dependent analysis of the plasmonic properties was studied with Fourier transformed UV-vis measurements. Certain conditions were selected to perform a surface enhanced Raman spectroscopy (SERS) evaluation of these platforms with two model dyes, prior to confirming the potential interest for a well-resolved analysis of filtered blood plasma.

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N-Acetylalanine Monolayers at the Silver Surface Investigated by Surface Enhanced Raman Scattering Spectroscopy and X-ray Photoelectron Spectroscopy: Effect of Metallic Ions

The Journal of Physical Chemistry C ◽

10.1021/jp8042544 ◽

2008 ◽

Vol 112 (38) ◽

pp. 15022-15027 ◽

Cited By ~ 2

Author(s):

Haifeng Yang ◽

Xuan Zhu ◽

Wei Song ◽

Yiping Sun ◽

Guoping Duan ◽

...

Keyword(s):

Raman Scattering ◽

Photoelectron Spectroscopy ◽

Surface Enhanced Raman Scattering ◽

Metallic Ions ◽

Silver Surface ◽

Raman Scattering Spectroscopy ◽

X Ray ◽

Surface Enhanced ◽

Surface Enhanced Raman ◽

Enhanced Raman Scattering

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Surface‐enhanced Raman spectroscopic investigation on surface plasmon resonance and electrochemical catalysis on surface coupling reaction of pyridine at Au/TiO 2 junction electrodes

Journal of Raman Spectroscopy ◽

10.1002/jrs.5982 ◽

2020 ◽

Vol 51 (11) ◽

pp. 2199-2207

Author(s):

Jing Zhao ◽

Chenjie Zhang ◽

Yanhua Lu ◽

Qian Wu ◽

Yaxian Yuan ◽

...

Keyword(s):

Surface Plasmon Resonance ◽

Surface Plasmon ◽

Plasmon Resonance ◽

Spectroscopic Investigation ◽

Coupling Reaction ◽

Electrochemical Catalysis ◽

Raman Spectroscopic ◽

Surface Enhanced ◽

Surface Enhanced Raman ◽

Surface Coupling

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Improved Surface-Enhanced Raman Scattering Properties of ZrO2 Nanoparticles by Zn Doping

Nanomaterials ◽

10.3390/nano9070983 ◽

2019 ◽

Vol 9 (7) ◽

pp. 983 ◽

Cited By ~ 3

Author(s):

Peng Ji ◽

Zhu Mao ◽

Zhe Wang ◽

Xiangxin Xue ◽

Yu Zhang ◽

...

Keyword(s):

Charge Transfer ◽

Raman Scattering ◽

Surface Enhanced Raman Scattering ◽

Zro2 Nanoparticles ◽

Zn Doping ◽

X Ray ◽

Vis Spectroscopy ◽

Surface Enhanced ◽

Surface Enhanced Raman ◽

Enhanced Raman Scattering

In this study, ZrO2 and Zn–ZrO2 nanoparticles (NPs) with a series of Zn ion doping amounts were synthesized by the sol-gel process and utilized as substrates for surface-enhanced Raman scattering (SERS). After absorbing the probing molecule 4–mercaptobenzoic acid, the SERS signal intensities of Zn–ZrO2 NPs were all greater than that of the pure ZrO2. The 1% Zn doping concentration ZrO2 NPs exhibited the highest SERS enhancement, with an enhancement factor (EF) value of up to 104. X-ray diffraction, X-ray photoelectron spectroscopy, Ultraviolet (UV) photoelectron spectrometer, UV–vis spectroscopy, Transmission Electron Microscope (TEM), and Raman spectroscopy were used to characterize the properties of Zn–ZrO2 NPs and explore the mechanisms behind the SERS phenomenon. The charge transfer (CT) process is considered to be responsible for the SERS performance of 4–MBA adsorbed on Zn–ZrO2. The results of this study demonstrate that an appropriate doping ratio of Zn ions can promote the charge transfer process between ZrO2 NPs and probe molecules and significantly improve the SERS properties of ZrO2 substrates.

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