Synthesis and polymerization of 2-(1-methylbut-2-en-1-yl)aniline and its products modification

Abstract

This work is focused on modifying aniline monomers with various characteristics that allows one to study the effect of the substituent on the respective polymer. A series of new polyaniline (PANI) derivatives based on an ortho-substituted aniline derivative, 2-(1-methylbut-2-en-1-yl)aniline, were synthesized and characterized. The structures and composition of the polymers that we synthesized were confirmed by elemental analysis, proton nuclear magnetic resonance (1H NMR) spectroscopy, carbon nuclear magnetic resonance (13C NMR) spectroscopy, Fourier-transform infrared spectroscopy (FT-IR), and ultraviolet–visible spectroscopy (UV). Characterization by FT-IR and UV–visible spectroscopy techniques indicated that the polymers exist in protonated emeraldine forms. The polymers are soluble in common organic solvents, so they can be used to make films. It was shown the prospect of using thin polymer films in the design of chemical sensors. The impact of the substituent on the polymer characteristics is rationalized in terms of steric and electronic effects.

Keywords

• Polyaniline
• Poly(ortho-alkylaniline)
• Solubility
• Fluorescence
• Polymer films
• Sensors