Electrochemical polymerization of fluoro‐ and chloro‐substituted anilines and copolymers with aniline

Abstract

Poly(2-fluroaniline) and poly(2-chloroaniline) were synthesized by an electrochemical method in an acetonitrile solution containing tetrabutylammonium perchlorate and perchloric acid. Also, the electrochemical copolymerization of aniline with 2-fluroaniline and 2-chloroaniline was carried out in the same medium. Cyclic voltammograms of the deposited films were recorded in neutral, acidic, and basic solutions. The electrochemical behavior of the films showed the same characteristic results as conventional polyaniline. The observed decrease in the dry electrical conductivity of the copolymers with respect to polyaniline was attributed to the incorporation of the fluoro-and chloro-substituted anilines into the polyaniline chain. Further characterization of the polymer and copolymer products was performed through dry electrical conductivity measurements, ultraviolet-visible spectroscopy, and Fourier transform infrared spectroscopy. The relative solubility of the films was determined in various common organic solvents.

Electrochemical copolymerization of o-toluidine and o-phenylenediamine

“…Pekmez-Ö zcicek et al [11] reported that incorporation of aniline units within polythiophene chains led to copolymers having an increased range of electrochemical stability. on the conductivities of poly(aniline-co-2-flouroaniline) and poly(aniline-co-2-chloroaniline) [12]. Monomers bearing sulfonate, alkylsulfonate and carboxylate groups were copolymerized with aniline, yielding self-doped copolymers [13].…”

In situ UV–vis spectroelectrochemistry of poly(o-phenylenediamine-co-m-toluidine)

“…The primary advantage of copolymerization is that the properties of the resulting material (copolymer) can be regulated by adjusting the ratio of the monomer concentrations [30]. Several reports are available on aniline or substituted aniline-based copolymers [31][32][33][34][35][36][37]. In many cases the copolymers exhibit better properties than the homopolymers [38][39][40][41][42][43][44][45].…”

Adsorption of methyl orange using self-assembled porous microspheres of poly(o-chloroaniline)

“…The detailed FTIR interpretation is presented elsewhere [39]. The XRD pattern of POC hollow microspheres shows that the product is amorphous and only one broad peak centered at 2θ =25 o may be ascribed to the periodicity parallel to the polymer chain [42,43]. The XRD pattern of the POC hollow microsphere was presented in our previous studies [39].…”