Glassy carbon electrodes modified with CNT dispersed in chitosan: Analytical applications for sensing DNA-methylene blue interaction

dc.creatorArias, Paulina
dc.creatorFerreyra, Nancy Fabiana
dc.creatorRivas, Gustavo Adolfo
dc.creatorBollo, Soledad
dc.date.accessioned2019-09-04T13:20:45Z
dc.date.accessioned2022-10-15T16:59:25Z
dc.date.available2019-09-04T13:20:45Z
dc.date.available2022-10-15T16:59:25Z
dc.date.created2019-09-04T13:20:45Z
dc.date.issued2009-09
dc.identifierArias, Paulina; Ferreyra, Nancy Fabiana; Rivas, Gustavo Adolfo; Bollo, Soledad; Glassy carbon electrodes modified with CNT dispersed in chitosan: Analytical applications for sensing DNA-methylene blue interaction; Elsevier Science Sa; Journal of Electroanalytical Chemistry; 634; 2; 9-2009; 123-126
dc.identifier1572-6657
dc.identifierhttp://hdl.handle.net/11336/82855
dc.identifierCONICET Digital
dc.identifierCONICET
dc.identifier.urihttps://repositorioslatinoamericanos.uchile.cl/handle/2250/4412434
dc.description.abstractIn this work we report the optimization of a chitosan (CHI) and carbon nanotubes (CNT) modified electrode, CNT-CHI, to study the dsDNA interaction with methylene blue (MB), a well-known DNA intercalator. The analytical signal was the reduction current of the MB associated with the dsDNA confined at CNT-CHI modified glassy carbon electrode. The selected CNT-CHI film stabilizing treatment was immersion for 2 s in a 0.20% GTA solution. The effect of ionic strength was also analyzed, concluding that high concentration of NaCl (90 mM) benefits the intercalative process. Below these conditions, a linear response between intensity current and MB concentration was obtained. In conclusion, modifying the initial conditions of the assembling GCE/CHI-CNT/dsDNA electrode the intercalative process was favored opening a fast and cheap possibility to evaluate the toxicity of new synthesized molecules.
dc.languageeng
dc.publisherElsevier Science Sa
dc.relationinfo:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0022072809002800
dc.relationinfo:eu-repo/semantics/altIdentifier/doi/https://doi.org/10.1016/j.jelechem.2009.07.022
dc.rightshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.rightsinfo:eu-repo/semantics/restrictedAccess
dc.subjectCARBON NANOTUBES
dc.subjectCHITOSAN
dc.subjectDNA DAMAGE
dc.subjectGLASSY CARBON ELECTRODE
dc.subjectMETHYLENE BLUE ELECTROCHEMISTRY
dc.subjectMETHYLENE BLUE SENSOR
dc.titleGlassy carbon electrodes modified with CNT dispersed in chitosan: Analytical applications for sensing DNA-methylene blue interaction
dc.typeinfo:eu-repo/semantics/article
dc.typeinfo:ar-repo/semantics/artículo
dc.typeinfo:eu-repo/semantics/publishedVersion


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