Preparation and characterization of DNA films using oleylamine modified Au surfaces

• Tipo: Artigo em Revista Científica Internacional
• Data: 2011

Autores

Joao Borges (Autor) Outra; Jose A Ribeiro (Autor) Outra; Elisa M Pereira (Autor) Outra; Catia A Carreira (Autor) Outra; Carlos M Pereira (Autor) FCUP; Fernando Silva (Autor) FCUP

Revista

Título: Journal of Colloid and Interface Science

Vol. 358

Páginas: 626-634

ISSN: 0021-9797

Editora: Elsevier

Indexação

ISI Web of Knowledge - 34 Citações

Scopus - 36 Citações

Classificação Científica

FOS: Ciências exactas e naturais > Química

Outras Informações

ID Authenticus: P-002-QFY

DOI: 10.1016/j.jcis.2011.03.039

Abstract (EN): Thin films composed of oleylamine (OLA) and double-stranded deoxyribonucleic acid (dsDNA from Salmon testes) have been successfully constructed on polycrystalline Au surfaces using the electrostatic adsorption and self-assembly (SA) technique. The formation of the Au/OLA/dsDNA films was followed step-by-step by Quartz Crystal Microbalance with energy dissipation (QCM-D), Atomic Force Microscopy (AFM), and electrochemical techniques such as Cyclic Voltammetry (CV) and Electrochemical Impedance Spectroscopy (EIS). The use of these techniques allowed the characterization and the follow up of the successful construction of the OLA/dsDNA composite film. The main advantages of the proposed methodology are the simplicity of the modification procedure, the stability of the dsDNA self-assembled film, and the potential employment of the dsDNA modified gold electrodes to study the interactions of DNA with target molecules. Copyright

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 9