Charge transfer resonance Raman process in surface-enhanced Raman scattering from p-aminothiophenol adsorbed on silver: Herzberg-Teller contribution

1994 ◽  
Vol 98 (48) ◽  
pp. 12702-12707 ◽  
Author(s):  
Masatoshi Osawa ◽  
Naoki Matsuda ◽  
Katsumasa Yoshii ◽  
Isamu Uchida
Keyword(s):  
Charge Transfer ◽  
Raman Scattering ◽  
Resonance Raman ◽  
Surface Enhanced Raman Scattering ◽  
Raman Process ◽  
Surface Enhanced ◽  
Surface Enhanced Raman ◽  
Enhanced Raman Scattering

scholarly journals Intramolecular and Metal-to-Molecule Charge Transfer Electronic Resonances in the Surface-Enhanced Raman Scattering of 1,4-Bis((E)-2-(pyridin-4-yl)vinyl)naphthalene

Molecules ◽  
2019 ◽  
Vol 24 (24) ◽  
pp. 4622 ◽  
Author(s):  
Isabel López-Tocón ◽  
Elizabeth Imbarack ◽  
Juan Soto ◽  
Santiago Sanchez-Cortes ◽  
Patricio Leyton ◽  
...  
Keyword(s):  
Charge Transfer ◽  
Raman Scattering ◽  
Resonance Raman ◽  
Surface Enhanced Raman Scattering ◽  
Complex Model ◽  
Electrode Potentials ◽  
General Chemical ◽  
Surface Enhanced ◽  
Surface Enhanced Raman ◽  
Enhanced Raman Scattering

Electrochemical surface-enhanced Raman scattering (SERS) of the cruciform system 1,4-bis((E)-2-(pyridin-4-yl)vinyl)naphthalene (bpyvn) was recorded on nanostructured silver surfaces at different electrode potentials by using excitation laser lines of 785 and 514.5 nm. SERS relative intensities were analyzed on the basis of the resonance Raman vibronic theory with the help of DFT calculations. The comparison between the experimental and the computed resonance Raman spectra calculated for the first five electronic states of the Ag2-bpyvn surface complex model points out that the selective enhancement of the SERS band recorded at about 1600 cm−1, under 785 nm excitation, is due to a resonant Raman process involving a photoexcited metal-to-molecule charge transfer state of the complex, while the enhancement of the 1570 cm−1 band using 514.5 nm excitation is due to an intramolecular π→π* electronic transition localized in the naphthalenyl framework, resulting in a case of surface-enhanced resonance Raman spectrum (SERRS). Thus, the enhancement of the SERS bands of bpyvn is controlled by a general chemical enhancement mechanism in which different resonance processes of the overall electronic structure of the metal-molecule system are involved.

Charge-Transfer-Induced Surface-Enhanced Raman Scattering on Ag−TiO2 Nanocomposites

2009 ◽  
Vol 113 (36) ◽  
pp. 16226-16231 ◽  
Author(s):  
Libin Yang ◽  
Xin Jiang ◽  
Weidong Ruan ◽  
Jingxiu Yang ◽  
Bing Zhao ◽  
...  
Keyword(s):  
Charge Transfer ◽  
Raman Scattering ◽  
Surface Enhanced Raman Scattering ◽  
Surface Enhanced ◽  
Surface Enhanced Raman ◽  
Enhanced Raman Scattering

Surface-enhanced Raman scattering on organic–inorganic hybrid perovskites

2018 ◽  
Vol 54 (17) ◽  
pp. 2134-2137 ◽  
Author(s):  
Xiaoyue Su ◽  
Hao Ma ◽  
He Wang ◽  
Xueliang Li ◽  
Xiao Xia Han ◽  
...  
Keyword(s):  
Charge Transfer ◽  
Raman Scattering ◽  
Surface Enhanced Raman Scattering ◽  
Inorganic Hybrid ◽  
Enhancement Mechanism ◽  
Surface Enhanced ◽  
Surface Enhanced Raman ◽  
Enhanced Raman Scattering ◽  
First Time

For the first time SERS on organic–inorganic hybrid perovskites is explored. The enhancement mechanism is discussed according to charge transfer.

Metal–semiconductor heterostructures for surface-enhanced Raman scattering: synergistic contribution of plasmons and charge transfer

2021 ◽  
Author(s):  
Yawen Liu ◽  
Hao Ma ◽  
Xiao Xia Han ◽  
Bing Zhao
Keyword(s):  
Charge Transfer ◽  
Raman Scattering ◽  
Building Blocks ◽  
Surface Enhanced Raman Scattering ◽  
Semiconductor Heterostructures ◽  
Surface Enhanced ◽  
Surface Enhanced Raman ◽  
Enhanced Raman Scattering

SERS on metal–semiconductor heterostructures including their building blocks, enhancement mechanisms and applications was reviewed. The synergistic contribution of plasmons and charge transfer is highlighted.

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

Nanomaterials ◽  
2019 ◽  
Vol 9 (7) ◽  
pp. 983 ◽  
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.

Mesoporous semiconducting TiO2 with rich active sites as a remarkable substrate for surface-enhanced Raman scattering

2017 ◽  
Vol 19 (28) ◽  
pp. 18731-18738 ◽  
Author(s):  
Libin Yang ◽  
Di Yin ◽  
Yu Shen ◽  
Ming Yang ◽  
Xiuling Li ◽  
...  
Keyword(s):  
Charge Transfer ◽  
Raman Scattering ◽  
Active Sites ◽  
Surface Enhanced Raman Scattering ◽  
Transfer Mechanism ◽  
Charge Transfer Mechanism ◽  
Highly Active ◽  
Surface Enhanced ◽  
Surface Enhanced Raman ◽  
Enhanced Raman Scattering

Mesoporous TiO2 with highly active sites was used as an effective and recyclable substrate for SERS contributed by the charge-transfer mechanism.

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