![]() ![]() ![]() Electropolymerization of Py-RedII and electroco-polymerization of Py-RedII and pyrrole were studied using conventional three electrodes system, Ag/AgCl reference electrode, platinum counter electrode and GC disk working electrode. Poly (2- phenyl] amino] ethyl-N-pyrrolyl propionate) (PPy-RedII) was characterized by UV, IR,, spectroscopies. Chemical polymerization of Py-RedII and copolymerization of Py-RedII with pyrrole carried out using. RedII was reacted with the potassium salt of pyrrole then 2- phenyl] amino] ethyl-N-pyrrolyl propionate (Py-RedII) was prepared. The 2-phenyl] amino] ethyl-3-chloropropionate (RedII) compound was synthesized via reaction of 4-nitro-4'- azobenzene (RedI) and 3-chloropropionic acid. This article describes the synthesis of a novel N-substituted pyrrole monomer containing an azobenzene group. In summary, our proposed sensor is promising for monitoring Ni(II) ions in the aquatic environment. When the proposed sensor was tested for tracking Ni(II) concentration in an actual river sample, our modified sensor showed similar results compared to the atomic absorption spectroscopy evaluation (p > 0.05, n = 3). The proposed sensor showed excellent performance when tested for tracking Ni(II) ions in the presence of interfering ions (Cd(II), Co(II), Cu(II), and Zn(II) ions) at a 1000-fold higher concentration. The analytical evaluation showed that the proposed sensor has a linear dynamic range (R2 = 0.999) for the Ni(II) concentration range of 0.01 to 1 μM and a limit of detection value of 0.00482 μM. The proposed sensor was thoroughly characterized by scanning electron microscopy, cyclic voltammetry, and differential pulse striping anodic voltammetry. The developed sensor applied aniline as a functional monomer and was used for tracking Ni(II) ions. This study describes a simple and facile technique for manufacturing a highly selective and sensitive electrode using an ion imprinting polymer on a bismuth-modified carbon paste electrode. Electrochemical sensors based on ion-imprinting polymers have emerged as an effective analytical tool for heavy metal tracking. ![]()
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