Structure and identity of 4,4'-thiobisbenzenethiol self-assembled monolayers

Article Abstract:

The structural characteristics and adsorption behavior of 4,4'-thiobenzenethiol (TBBT) self-assembled monolayers (SAMs) on Au is investigated by surface enhanced Raman scattering (SERS), electrochemical cyclic voltammetry (CV), ac impedance spectroscopy (EIS), and atomic force microscopy (AFM). A scanning electron microscopic image of Ag nanoparticles on TBBT/Au and the Raman spectrum of TBBT in smooth macroscopic Au/TBBT SAMs/Ag nanoparticle sandwich structure indicate that metal nanoparticles could be adsorbed on TBBT SAMs effectively through covalent linkage.

Monomolecular films, Structure, Chemical properties

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Surface enhanced Raman scattering investigation of the halide anion effect on the adsorption of 1,2,3-triazole on silver and gold colloidal nanoparticles

Article Abstract:

The halide anion effect on the adsorption of 1,2,3-triazole on Ag and Au colloidal nanoparticles is investigated by means of surface enhanced Raman scattering (SERS), UV- visible absorption spectroscopy and scanning electron microscopy. Analogous behavior is observed in the case of basified Au collids, whereas at the usual pH of the hydrosols the adsorption of 1,2,3- triazole is the same of that observed in halide-free colloids.

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Quantum mechanical investigation of thiourea adsorption on Ag(111) considering electric field and slovent effects

Article Abstract:

The adsorption of different thiourea species was investigated on the 111 surface of silver considering elctric field and solvent effects. The adsorption in vacuum of molecular species such as thiourea (TU), canonical thiourea, and formamidine disulfide and the adsorption of the canonical thiourea radical resulting from the cleavage of the S-H bond are considered.

Adsorption, Electric fields

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