Artículo
Bellino, M.G.; Calvo, E.J.; Gordillo, G. "Adsorption kinetics of charged thiols on gold nanoparticles" (2004) Physical Chemistry Chemical Physics. 6(2):424-428
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Abstract:
Colloidal Au nanoparticles have been functionalized with mercaptopropane sulfonate (MPS) and mercaptoethylamine (MEA) short alkanethiols in aqueous solutions. Adsorption kinetics of these charged thiols onto gold nanoparticles has been followed by the decrease in the surface plasmon band at 530 nm due to the red shift caused by particle-to-particle aggregation. Titration curves resulted from plotting the 530 and 800 nm-absorbance versus the added amount of thiol in solution, and yielded the mercaptane coverage on Au. While the adsorption of positively charged MEA on negatively charged Au colloid is very rapid, slower and more complex adsorption kinetics have been found for the negatively charged MPS.
Registro:
| Documento: | Artículo |
| Título: | Adsorption kinetics of charged thiols on gold nanoparticles |
| Autor: | Bellino, M.G.; Calvo, E.J.; Gordillo, G. |
| Filiación: | INQUIMAE - DQIAQF, Fac. de Ciencias Exactas y Naturales, Ciudad Universitaria, AR-1428 Buenos Aires, Argentina |
| Palabras clave: | gold; mercaptopropane; propane; thiol derivative; unclassified drug; addition reaction; adsorption kinetics; aqueous solution; article; colloid; complex formation; electric potential; electricity; molecular interaction; molecular mechanics; nanoparticle; reaction analysis; surface property; titrimetry |
| Año: | 2004 |
| Volumen: | 6 |
| Número: | 2 |
| Página de inicio: | 424 |
| Página de fin: | 428 |
| DOI: | http://dx.doi.org/10.1039/b312252b |
| Título revista: | Physical Chemistry Chemical Physics |
| Título revista abreviado: | Phys. Chem. Chem. Phys. |
| ISSN: | 14639076 |
| CODEN: | PPCPF |
| CAS: | gold, 7440-57-5; propane, 74-98-6; thiol derivative, 13940-21-1 |
| Registro: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_14639076_v6_n2_p424_Bellino |
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Citas:
---------- APA ----------
Bellino, M.G., Calvo, E.J. & Gordillo, G. (2004) . Adsorption kinetics of charged thiols on gold nanoparticles. Physical Chemistry Chemical Physics, 6(2), 424-428.http://dx.doi.org/10.1039/b312252b
---------- CHICAGO ----------
Bellino, M.G., Calvo, E.J., Gordillo, G. "Adsorption kinetics of charged thiols on gold nanoparticles" . Physical Chemistry Chemical Physics 6, no. 2 (2004) : 424-428.http://dx.doi.org/10.1039/b312252b
---------- MLA ----------
Bellino, M.G., Calvo, E.J., Gordillo, G. "Adsorption kinetics of charged thiols on gold nanoparticles" . Physical Chemistry Chemical Physics, vol. 6, no. 2, 2004, pp. 424-428.http://dx.doi.org/10.1039/b312252b
---------- VANCOUVER ----------
Bellino, M.G., Calvo, E.J., Gordillo, G. Adsorption kinetics of charged thiols on gold nanoparticles. Phys. Chem. Chem. Phys. 2004;6(2):424-428.http://dx.doi.org/10.1039/b312252b
