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Abstract: A different molecularly imprinted composite film with the exploit of computational design is synthesized. The proposed composite is used for electrode modification to determine morphine. The ratio of monomer to template in optimum condition was obtained 4. The modification of the electrode was achieved by electropolymerizing L-lysine in the presence of morphine on the surface of sodium alginate and activated carbon (SA-AC) on glassy carbon electrode (GCE). The SA-AC composite with special surface area suits for making sensitive sensors. Morphine showed an anodic peak in buffer solution of phosphate (pH=6.0) on MIP/SA-AC/GCE. The optimization of the practical factors on the response and electrochemical behavior of template morphine on the modified electrode were precisely surveyed. The DPV outcomes exhibit high sensitivity for morphine detection within 0.1-1000.0 μM and limit of detection as 48 nM (S/N=3). The application of this disposable sensor in the case of urine samples was quite satisfactory
Template and target information: L-lysine
Author keywords: morphine, molecularly imprinted polymer, electropolymerization, computational design, l-Lysine