In the present study, a novel electrochemical sensor for acetaminophen (AMP) which included quantum graphitic carbon nitride dots, g-C3N4QDs, was designed and conducted with molecular imprinted polymer (MIP). First, bulk g-C3N4 was generated with direct thermal polycondensation of melamine. After the treatment of the acidic solution containing H2SO4: HNO3 (1:1, v:v), the heating treatment at 200 °C on the dispersion provided g-C3N4QDs. In this respect, for nanomaterial characterization, some spectroscopic approaches were performed including Fourier-transform infrared spectroscopy (FTIR), and X-ray photoelectron spectroscopy (XPS) as well as electroanalytical methods such as electrochemical impedance (EIS) and cyclic voltammetry (CV). In accordance with the aims of the study, AMP imprinted electrode was formed after high electrocatalytic performance and linear range of 1.0 × 10– 11–2.0 × 10– 8 M and the LODs of 2.0 × 10– 12 was achieved. Eventually, an AMP-printed sensor was also used for AMP identification in pharmaceutical samples.

    Abstract
    1 Introduction
    2 Experimental
        2.1 Materials
        2.2 Preparation of bulk g-C3N4 and g-C3N4QDs
        2.3 Preparation of electrode
        2.4 Preparation of AMP imprinted electrodes
        2.5 Sample preparation
    3 Results and discussion
        3.1 Characterization results
        3.2 CV and EIS results
        3.3 Formation of AMP imprinted polymer on g-C3N4QDsGCE
        3.4 Optimization
        3.5 Linearity range
        3.6 Recovery
        3.7 Selectivity, stability, repeatability, reproducibility, and reusability
    4 Conclusion
    References

• Hilal Medetalibeyoğlu(Faculty of Science and Letters, Department of Chemistry, Kafkas University)