SERS of 1,8-diaminonaphthalene on gold, silver and copper electrodes Polymerisation and complexes formed with the electrode material

Pałys, Barbara; Bukowska, J.; Jackowska, K.

doi:10.1016/s0022-0728(97)00029-6

Cited by 78 publications

(67 citation statements)

References 8 publications

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“…As shown in the literature, 26,27 the ORC procedure performed under daylight in roughening the Ag substrate left some unreduced species, probably Ag 4 C clusters, on the Ag surface. Meanwhile, the Ag-containing complexes might be present in the solution after roughening the Ag substrate for 30 scans in this study.…”

Section: Resultsmentioning

confidence: 57%

Improved surface‐enhanced Raman scattering of polypyrrole electrodeposited on roughened substrates composed of Au–Ag bimetallic nanoparticles

Chuang

Liu

Wang

2005

J Raman Spectroscopy

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We report here the first electrochemical method to prepare a roughened gold substrate with bimetallic silver and gold nanoparticles. First, a silver substrate was roughened by a triangular-wave oxidation-reduction cycle in 0.1 N HCl aqueous solutions. Silver-containing complexes were found in the solution after the ORC treatment. Then a gold substrate was subsequently roughened by a similar oxidation-reduction treatment in this solution. Scanning electron microscopy and atomic force microscopy reveal that the surface of the roughened gold was intrinsically modified with silver nanoparticles, which demonstrates two different kinds of deposition domains. Encouragingly, surface-enhanced Raman scattering of polypyrrole electrodeposited on the roughened gold substrate, modified with finer silver nanoparticles, exhibits an eightfold higher intensity.

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Section: Resultsmentioning

confidence: 57%

Improved surface‐enhanced Raman scattering of polypyrrole electrodeposited on roughened substrates composed of Au–Ag bimetallic nanoparticles

Chuang

Liu

Wang

2005

J Raman Spectroscopy

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“…This significant change in peak intensity is due to the effect of surface enhanced Raman scattering (SERS) which results from two aspects: the nanoscale roughness [27,28] of the PANI-p-TSA/Au structure and the facilitation of charge transfer between PANI nitrogen and embedded gold nanoparticles. [29,30] …”

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confidence: 99%

Self‐Assembled Hollow Polyaniline/Au Nanospheres Obtained by a One‐Step Synthesis

Zhang

Peng

Kilmartin

et al. 2008

Macromol. Rapid Commun.

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Self‐assembled hollow nanosphere composites of polyaniline and Au nanoparticles (PANI‐p‐TSA/Au) were chemically synthesized from solutions containing p‐toluenesulfonic acid (p‐TSA) with the addition of gold chloride trihydrate as the oxidant. The composite materials were characterized by SEM, TEM, and a range of spectroscopic methods. Spectroscopic characterizations confirmed that the polymeric product is a form of doped PANI, while electron diffraction and X‐ray diffraction showed that elemental Au was present in the PANI‐p‐TSA/Au nanocomposites. The room temperature electrical conductivity of the PANI‐p‐TSA/Au nanocomposites was two orders of magnitude greater than a PANI‐p‐TSA obtained in the presence of ammonium persulfate as the oxidant under the same conditions.magnified image

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“…16 Nowadays, the demand for such group of compounds has increased as a result of several new optical and organic conducting materials that can be produced by these compounds. 17,18 Schiff bases can also serve as photochromic compounds. 19 Considering their significant biological activity, pharmacological and physicochemical properties, Schiff bases are extremely important especially those which participate in tautomeric equilibiria between imine and keto forms.…”

Section: Introductionmentioning

confidence: 99%

Experimental and Theoretical Investigations of Spectral, Tautomerism and Acid-Base Properties of Schiff Bases Derived from Some Amino Acids

Ebead¹,

Salman²,

Abdellah³

2010

Bulletin of the Korean Chemical Society

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The electronic absorption spectra of five Schiff bases derived from 2-hydroxy-1-naphthaldehyde with glycine, alanine, leucine, valine and phenylalanine have been measured in various solvents. The observed bands were assigned to the proper electronic transitions and compared with the predicted transitions at the semiempirical level of theory. The calculated equilibrium constants are in agreement with the experimental results, predicting the existence of all studied compounds predominantly or completely in keto-imine tautomerism. On the other hand, a correlation between ν (cm -1 ) (main frequency of each compound) and the well known solvent parameters ET (30), εr, π* has been made. Furthermore, the acid dissociation constants, pKa, were determined by using three different spectrophotometric methods.

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SERS of 1,8-diaminonaphthalene on gold, silver and copper electrodes Polymerisation and complexes formed with the electrode material

Cited by 78 publications

References 8 publications

Improved surface‐enhanced Raman scattering of polypyrrole electrodeposited on roughened substrates composed of Au–Ag bimetallic nanoparticles

Improved surface‐enhanced Raman scattering of polypyrrole electrodeposited on roughened substrates composed of Au–Ag bimetallic nanoparticles

Self‐Assembled Hollow Polyaniline/Au Nanospheres Obtained by a One‐Step Synthesis

Experimental and Theoretical Investigations of Spectral, Tautomerism and Acid-Base Properties of Schiff Bases Derived from Some Amino Acids

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