Selective detection of dopamine with an all PEDOT:PSS Organic Electrochemical Transistor.

ABSTRACT: An all PEDOT:PSS Organic Electrochemical Transistor (OECT) has been developed and used for the selective detection of dopamine (DA) in the presence of interfering compounds (ascorbic acid, AA and uric acid, UA). The selective response has been implemented using a potentiodynamic approach, by varying the operating gate voltage and the scan rate. The trans-conductance curves allow to obtain a linear calibration plot for AA, UA and DA and to separate the redox waves associated to each compound; for this purpose, the scan rate is an important parameter to achieve a good resolution. The sensitivities and limits of detection obtained with the OECT have been compared with those obtained by potential step amperometric techniques (cyclic voltammetry and differential pulse voltammetry), employing a

SUBMITTER: Gualandi I 

PROVIDER: S-EPMC5064404 | biostudies-literature | 2016 Oct

REPOSITORIES: biostudies-literature