Raman scattering from monolayer films of thiophenol and 4-mercaptopyridine at platinum surfaces

Bryant, Mark A.; Joa, Susan L.; Pemberton, Jeanne E.

doi:10.1021/la00039a002

Cited by 136 publications

(123 citation statements)

References 2 publications

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“…The large decrease in frequency of the in-plane breathing mode coupled to the υ (C-S) mode from 1092-1069 cm -1 in the SERS spectra show that the TP molecule is bonded to the metal surface. [34] With the NRs as the substrate, the SERS detection of TP and R6G is down to a concentration of 10 -12 , much lower than the reported values, [35] whereas in the case of phenylalanine we could only go down to µ concentrations.…”

Section: Sers Activity Of Nanorodsmentioning

confidence: 65%

Facile and Green Synthesis of SERS Active and Ferromagnetic Silver Nanorods

et al. 2010

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Silver nanorods with increased surface‐enhanced Raman scattering sensitivity and detection have been synthesized in a novel, facile, and eco‐friendly way through a simple chemical reduction method using 2,3‐dihydroxyfumaric acid in aqueous solution under aerobic conditions. The structure and composition of the silver nanorods were characterized by UV/Vis spectroscopy, powder X‐ray diffraction, transmission electron microscopy (TEM), and field emission scanning electron microscopy (FESEM). Simple hard washing agglomerates the nanorods. The agglomerated nanorods consist of several “hot spots”, easily replaceable capping agents and an anisotropic shape, which are all responsible for its high sensitivity and trace detection (picomolar level) of different adsorbate molecules (thiophenol, Rhodamine 6G) in surface‐enhanced Raman scattering. Rarely observed, but theoretically established, unpaired s‐electron‐based ferromagnetism is the other interesting aspect of these nanorods.

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Section: Sers Activity Of Nanorodsmentioning

confidence: 65%

Facile and Green Synthesis of SERS Active and Ferromagnetic Silver Nanorods

et al. 2010

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“…[33][34][35][36][37][38] Upon coordination to ruthenium metal centers in monomer complexes, 26,37,38 this mode shifts to ca. 1120 cm −1 indicating that the coordination does not occur via the sulfur atom as expected for pyridyl based ligands.…”

Section: Resultsmentioning

confidence: 99%

Mixed-valence state of symmetric diruthenium complexes: synthesis, characterization, and electron transfer investigation

Pinheiro¹,

Paulo²,

Abreu³

et al. 2012

Dalton Trans.

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Complexes of the type {[( pyS)Ru(NH 3 ) 4 ] 2 -μ-L}n , where pyS = 4-mercaptopyridine, L = 4,4′-dithiodipyridine ( pySSpy), pyrazine ( pz) and 1,4-dicyanobenzene (DCB), and n = +4 and +5 for fully reduced and mixed-valence complexes, respectively, were synthesized and characterized. Electrochemical data showed that there is electron communication between the metal centers with comproportionation constants of 33.2, 1.30 × 10 8 and 5.56 × 10 5 for L = pySSpy, pz and DCB, respectively. It was also observed that the electronic coupling between the metal centers is affected by the π-back-bonding interaction toward the pyS ligand. Raman spectroscopy showed a dependence of the intensity of the vibrational modes on the exciting radiations giving support to the assignments of the electronic transitions. The degree of electron communication between the metal centers through the bridging ligands suggests that these systems can be molecular wire materials.

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“…These changes are due to the adsorption of the molecule to the silver surface [43,44]. The band at 917cm -1 in the Raman spectrum which is attributed to the bending vibration of the S-H bond is no longer detected which indicates that the TP is chemisorbed on silver surface by the breaking of the S-H bond.…”

Section: Figurementioning

confidence: 99%

“…The Raman shift of 1361 cm -1 (in-plane bending and aromatic C-C stretching) and 1508 cm -1 (aromatic C-C stretching) for R6G were used, while for MGO 1365 cm -1 (N-C stretch) and 1395 cm -1 (C-C and C-H in-plane motion aromatic) and for TP 997 cm -1 (in-plane ring breathing mode) and 1022 cm -1 (in-plane C-H bend) were used [42,43].…”

Section: Surface Enhanced Raman Scatteringmentioning

confidence: 99%

Synthesis of size tunable monodispersed silver nanoparticles and the effect of size on SERS enhancement

Cassar

Graham

Larmour

et al. 2014

Vibrational Spectroscopy

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This version is available at https://strathprints.strath.ac.uk/47444/ Strathprints is designed to allow users to access the research output of the University of Strathclyde. Unless otherwise explicitly stated on the manuscript, Copyright © and Moral Rights for the papers on this site are retained by the individual authors and/or other copyright owners. Please check the manuscript for details of any other licences that may have been applied. You may not engage in further distribution of the material for any profitmaking activities or any commercial gain. You may freely distribute both the url (https://strathprints.strath.ac.uk/) and the content of this paper for research or private study, educational, or not-for-profit purposes without prior permission or charge.Any correspondence concerning this service should be sent to the AbstractSpherical and monodispersed silver nanoparticles (AgNPs) are ideal for fundamental research as the contribution from size and shape can be accounted for in the experimental design. In this paper a seeded growth method is presented, whereby varying the concentration of sodium borohydride reduced silver nanoparticle seeds different sizes of stable spherical nanoparticles with a low polydispersity nanoparticles are produced using hydroquinone as a selective reducing agent. The surface-enhanced Raman scattering (SERS) enhancement factor for each nanoparticle size produced (17, 26, 50, & 65 nm) was then assessed using three different analytes, rhodamine 6G (R6G), malachite green oxalate (MGO) and thiophenol (TP). The enhancement factor gives an indication of the Raman enhancement effect by the nanoparticle. Using non-aggregated conditions and two different laser excitation wavelength (633 nm and 785 nm) it is shown that an increase in particle size results in an increased enhancement for each analyte used.

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Raman scattering from monolayer films of thiophenol and 4-mercaptopyridine at platinum surfaces

Cited by 136 publications

References 2 publications

Facile and Green Synthesis of SERS Active and Ferromagnetic Silver Nanorods

Facile and Green Synthesis of SERS Active and Ferromagnetic Silver Nanorods

Mixed-valence state of symmetric diruthenium complexes: synthesis, characterization, and electron transfer investigation

Synthesis of size tunable monodispersed silver nanoparticles and the effect of size on SERS enhancement

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