Near-monodispersed polyaniline particles through template synthesis and simultaneous doping with diblock copolymers of PMA and PAAMPSA

Abstract

Well-defined block copolymers of poly(methyl acrylate) and poly(2-acrylamido-2-methyl-1-propanesulfonic acid), PMA/PAAMPSA, were successfully synthesized by atom transfer radical polymerization. These amphiphilic block copolymers spontaneously form micelles with a hydrophobic PMA core and a hydrophilic PAAMPSA corona in aqueous solutions. These micelles were used to template synthesize polyaniline. Because the polymerization of aniline is restricted to the PAAMPSA corona, which also serves as the dopant, the size of the conductive particles can be controlled by tuning the molecular characteristics of the block copolymer while maintaining a narrow size distribution. When cast as films, their conductivities are influenced by the weight fraction of polyaniline present, with higher polyaniline loading resulting in higher conductivities.

Large‐scale synthesis of polyaniline nanofibers based on renewable resource molecular template

“…To understand the mechanism of the amphiphilic dopant mediated synthesis, efforts were taken to utilize dynamic light scattering (DLS) and SEM techniques to characterize the micellar temlates 39–43. DLS histogram of the amphiphilic dopant (refer Fig.…”

Recent advances in conjugated polymer energy storage

“…[104][105][106] For example, poly(2-acrylamido-2-methyl-1-propanesulfonic acid) has been shown to both solubilize and stabilize PANI in complexes. 79,[107][108][109] …”

Incorporation of poly(2‐acrylamido‐2‐methyl‐N‐propanesulfonic acid) segments into block and brush copolymers by ATRP

“…Neutralizing the acid is the simplest way to prevent the latter side reaction. Previously, ATRP of AMPSA used the sodium salt of AMPSA to eliminate the presence of the acidic proton 50–55. In the present approach, we used TBA to function as the proton sponge to generate protonated TBA as the counterion.…”

“…The latter complex gives polymers with moderate polydispersities even at low temperatures (1.29 vs. 1.21), but achieves higher conversions in a similar timeframe (∼99% in 3 h). A similar method was used in the preparation of poly(methyl acrylate)‐ b ‐poly (AMPSA) block copolymers, with CuCl/Me 6 TREN as the catalyst and DMF/water as the solvent 55. Because of the low solubility of methyl acrylate in water, the amount of DMF in the cosolvent was increased.…”

“…Because of the low solubility of methyl acrylate in water, the amount of DMF in the cosolvent was increased. However, because water accelerates the rate of the polymerization,50, 56 this increase in the DMF content required extending the polymerization time significantly (∼7 days) 55…”