Analytical applications of electrochemical sensors based on carbon nanostructures

G. A. RIVAS; N. F. FERREYRA; M. C. RODRIGUEZ; M. D. RUBIANES; M. L. PEDANO; F. GUTIERREZ; P. D. DALMASSO; A. GASNIER; E. PRIMO; G. LUQUE; M. EGUILAZ-RUBIO

Buenos Aires

Congreso; 15th International Meeting on Chemical Sensors (IMCS) 2014; 2014

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-dsDNAwere 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 ofNADHand for the construction of enzymatic electrodes for phenols and ethanol.