Analytical applications of electrochemical sensors base don carbón nanostructures

GUSTAVO A.. RIVAS; NANCY FERREYRA; MARCELA RODRIGUEZ; DOLORES RUBIANES; LAURA PEDANO; FABIANA GUTIERREZ; PABLO DALMASSO; AURELIEN GASNIER; EMILIANO PRIMO; GUILLERMINA LUQUE; MARCOS EGUILAZ RUBIO

Buenos Aires

Congreso; 15th International Meeting on Chemical Sensors; 2014

IMCS

Carbon nanotubes (CNT) dispersed in different polymers were used to develop electrochemical (bio)sensors by drop-coating at glassy carbon electrodes (GCE). GCEs modified with CNT-polyhistidine were used for the sensitive and selective quantification of Cu(II). GCEs modified with CNT-dsDNA were used in two directions, as a platform for detecting promethazine through the intercalation of the drug, and as a platform to build supramolecular architectures for glucose biosensing. The simultaneous dispersion of copper microparticles and CNT in polyethylenimine made possible the development of stable and robust electrochemical sensors for the quantification of aminoacids, albumin and glucose through the complex formation. Graphene composite electrodes were successfully used for the quantification of NADH and for the construction of enzymatic electrodes for phenols and ethanol.