Synthesis, electrochemical properties and inhibition performance of water-soluble self-doped oligoaniline derivative

Self‐Doped Oligoaniline Electrochromic Devices: Fabrication and Effect of the Oligoaniline Molecular Architecture

“…The self‐doping redox process is depicted in Figure , it can be seen that inter‐hydrogen bonding locates the carboxyl hydrogen of one oligoaniline molecule around the secondary amine in another oligoaniline molecule, then the hydrogen combines with the imine nitrogen by the attraction of the lone pair electrons under oxidation, transforming the oligoanilines from LEB state to emeraldine salt (ES) state. Even in alkaline solution, the existence of the carboxyl groups helps the aniline units fulfill the process of receiving and losing electrons and protons . Therefore, the electrochemical results suggest that four carboxyl‐capped oligoaniline derivatives synthesized in this work possess promising self‐doping feature, which enables the electrochromic process to proceed even without the addition of external acid dopants.…”

“…Furthermore, self‐doped oligoanilines have stable redox activity, and show optical, electrical and chemical properties comparable to those of PAni, and it is easier to realize stringent controls in chemical structure and oxidation states than PAni . Wang and his co‐workers synthesized self‐doped oligoaniline derivatives or poly(amic acid) with pendent oligoanilines and found excellent electrochromic performance in a wide range of pH in solution . Yang et al.…”

Porous Carbons – Hyperbranched Polymers – Polymer Solvation

“…Hyperbranched poly(aryl ether amides) with fluorine or hydroxy end groups were synthesized by In and Kim [120] from AB 2 (Table 2, entry 3) or A 2 B (Table 2, entry 4) type monomers via a nucleophilic aromatic substitution (S N Ar) reaction. Monomer syntheses were facilitated by chemoselective amidation reactions, and even a direct synthesis of hb polymer was possible without isolation of the monomer.…”

“…Hence, the aromatic nucleophilic substitution reaction was used to replace the Ullmann reaction to synthesize hb-PPO free of the amine and copper salts for environmental safety. Aromatic nucleophilic substitution (S N Ar) is a very effective method among the various reactions that involve a leaving group activated with an electron-withdrawing group that produces an aromatic ether linkage [74,120]. The fluorine was chosen as a leaving group due to its good reactivity on account of its small size and high electronegativity.…”

“…Polymers with porphyrin units in the main chain and fullerene side groups are described as electroactive [113], as well as polymers with azo-groups in the main chain [114] and triarylamines in the side chain [115][116][117][118]. By proper functionalization and architecture, even poly(thiophene) [119] and oligoaniline [120][121][122] and derivatives [123] become soluble in different solvents. Also, electroactive polymers derived from 2,2,6,6-tetramethyl piperidinyloxyl (TEMPO) have drawn attention, especially with respect to energy storage applications [124][125][126][127].…”