Growth of N-substituted polypyrrole layers in ionic liquids: Synthesis and its electrochromic properties

Abstract

A new series of pyrrole family, N-substituted phenyl attached alkyl at the ortho, meta and para position were synthesized by a straight forward method and were exploited as an innovative monomer for electroactive polymers. Ionic liquids were employed as a medium for electro-polymerization of these monomers to obtain N-(methyl)phenyl polypyrroles. N-substituted polypyrroles show different morphologies and conductivity according to position of methyl group on the benzene ring and synthesis medium. The electrical conductivity value varies with the position of methyl group and was 410 À 5 S/cm, higher than the sample obtained from conventional media. The resulting polymer films were characterized by FT-IR and UV-Vis spectroscopy, contact angle measurements, cyclic voltammetry and scanning probe microscopic technique along with their electrochromic behavior.

Facile preparation and fluorescence properties of a soluble oligopyrrole derivative

“…Additionally, it is observed that the FTIR spectrum of OMDPP displays small changes compared with that of the monomer MDPP. The peak at 732 cm À1 , corresponding to the CÀ ÀH bonds from the pyrrole ring [14], seems slightly weaker. It indicates that the pyrrole ring of the monomer coupled partially.…”

Recent Advances in Electrochromic Smart Fenestration

“…), [24][25][26][27][28][29][30][31][32][33][34][35] Prussian blue, [36] conducting polymers (polyaniline (PANI), poly (3,4-ethylenedioxythiophene) (PEDOT), polypyrrole, etc. ), [37][38][39][40][41][42][43] and viologens [44][45][46][47][48] . Anodic electrochromic materials refer to the chromic materials whose color change from transparent state to dark or opaque state when oxidized during the anodic polarization process.…”

Poly(tris(4-carbazoyl-9-ylphenyl)amine)/Three Poly(3,4-ethylenedioxythiophene) Derivatives in Complementary High-Contrast Electrochromic Devices

“…π-conjugated polymers (CPs) and oligomers have attracted a great deal of interest due to their suitability for potential applications in supercapacitors [1,2], catalysts [3,4,5], actuators [6], polymer light-emitting diodes [7,8,9], electrochromic devices (ECDs) [10,11,12], polymer solar cells [13], and sensors [14,15,16]. The most commonly studied classes of CPs are poly(phenylene vinylene)s (PPV) [17], polycarbazoles (PCz) [18,19], polythiophenes (PT) [20], polypyrroles (PPy) [21], poly(3,4-ethylenedioxythiophene) (PEDOT) [22], and polyanilines (PANI) [23]. Cz-based polymers have been widely used as hole transporting and host materials in optoelectronic devices due to the nitrogen atom of Cz ring shows good hole transporting ability, high thermal stability, and ease of formation of radical cations and dications [24].…”