Zhang, Meng; Wang, Yanan; Wang, Xu; Zhao, Bing; Ruan, Weidong published the article 《Surface-enhanced Raman scattering (SERS) on indium-doped CdO (ICO) substrates: New charge-transfer enhancement contribution from electrons in conduction bands》. Keywords: surface enhanced Raman scattering indium doped cadmium oxide; charge transfer enhancement contribution electron conduction band.They researched the compound: Pyridine-4-thiol( cas:4556-23-4 ).Name: Pyridine-4-thiol. Aromatic heterocyclic compounds can be divided into two categories: single heterocyclic and fused heterocyclic. In addition, there is a lot of other information about this compound (cas:4556-23-4) here.
Surface-enhanced Raman scattering (SERS) substrates have shown rapid development in recent years, but the use of transparent conductive oxides (TCOs) in SERS is still limited. Here, a series of In-doped CdO (ICO) NPs with different In3+ doping contents x (x = 0, 0.025, 0.050, 0.075, 0.100, 0.125, 0.150, and 0.200) were synthesized by a hydrothermal method and first employed as a SERS platform. The structures and properties of the ICO NPs influenced by dopant concentration of In3+ ions were characterized by powder X-ray diffraction (XRD), inductively coupled plasma (ICP) anal., SEM (SEM), XPS, and Fourier transform IR (FTIR) spectroscopy. Furthermore, the SERS spectra of ICO-MPY were investigated. Interestingly, the enhancement was dominated by the charge-transfer (CT) contribution through the free electrons in conduction bands (CBs). The changes in electronic distributions in energy levels of ICO NPs at different doping contents were explored, and the corresponding effect on SERS was discussed by employing 633 and 785 nm excitation lines, resp. The CT route was found to be the excitation of electrons from CBs of semiconductor to the LUMO of mol., which provides a new perspective in understanding SERS mechanisms. The present work provides a new approach to develop potential semiconductive SERS substrates.
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Reference:
Nitrile – Wikipedia,
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