Electroactive polymer with oligoanilines in the main chain and azo chromophores in the side chain: synthesis, characterization and dielectric properties

He, Le; Chao, Danming; Jia, Xiaoteng; Liu, Hongtao; Yao, Lei; Liu, Xincai

doi:10.1039/c0jm02960b

Cited by 21 publications

(18 citation statements)

References 41 publications

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“…π‐Conjugated macromolecules, including oligoaniline (OANI)36–39 and polyaniline (PANI),30–32, 35 have previously been used as conductive fillers in polymers 29, 33, 34, 40, 41. Conducting PANI particles have been used as high dielectric constant fillers to prepare all‐organic dielectric composites 30, 31.…”

Section: Introductionmentioning

confidence: 99%

Oligoaniline‐Containing Supramolecular Block Copolymer Nanodielectric Materials

Hardy

Islam

Gonzalez-Delozier

et al. 2012

Macromol. Rapid Commun.

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We report a new generation of nanodielectric energy storage materials based on supramolecular block copolymers. In our approach, highly polarizable, conducting nanodomains are embedded within an insulating matrix through block copolymer microphase separation. An applied electric field leads to electronic polarization of the conducting domains. The high interfacial area of microphase-separated domains amplifies the polarization, leading to high dielectric permittivity. Specifically, reversible addition fragmentation transfer (RAFT) polymerization was used to prepare block copolymers with poly(methyl acrylate) (PMA) as the insulating segment and a strongly acidic dopant moiety, poly-(2-acrylamido-2-methyl-1-propanesulfonic acid) (PAMPSA), as the basis for the conducting segment. The PAMPSA block was complexed with an oligoaniline trimer to form a dopant-conjugated moiety complex that is electronically conductive after oxidation. For the undoped neat block copolymers, the increase of the PMA block length leads to a transition in dielectric properties from ionic conductor to dielectric capacitor with polarization resulting from migration of protons within the isolated PAMPSA domains. The oligoaniline-doped copolymers show remarkably different dielectric properties. At frequencies above 200 kHz, they exhibit characteristics of dielectric capacitors with much higher permittivity and lower dielectric loss than the corresponding undoped copolymers.

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Section: Introductionmentioning

confidence: 99%

Oligoaniline‐Containing Supramolecular Block Copolymer Nanodielectric Materials

Hardy

Islam

Gonzalez-Delozier

et al. 2012

Macromol. Rapid Commun.

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show abstract

“…New technologies to tailor-make Al 13 -PACl have been proposed and provide other direct verifications on the stability of Al 13 [5,[34][35][36][37]. The pure Al 13 solutions can be prepared at high concentration, 2 mol Al/L, which is similar concentration to the liquid industrial PACl products.…”

Section: Stability Of Keggin-al 13 In Paclmentioning

confidence: 99%

Speciation, stability, and coagulation mechanisms of hydroxyl aluminum clusters formed by PACl and alum: A critical review

Tang

Xiao

Wang

2015

Advances in Colloid and Interface Science

143

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The physicochemical property of coagulant species plays a significant role in the coagulation process. Recent progress on speciation, stability, and coagulation mechanisms of the hydroxyl aluminum clusters formed by PACl and alum has been critically reviewed. The complicated nature on species formation, stability, and transformation of various hydrolyzed aluminum clusters formed by PACl and Alum are discussed. Based on the aspects of spontaneous hydrolysis, forced hydrolysis, and dual-hydrolysis models, the special stability of aluminum clusters that results in various coagulation behaviors is compared with the traditional salts. The coagulation behavior of the hydroxyl aluminum clusters in terms of particle aggregation and restabilization, surface adsorption and coverage, microfloc formation and kinetics, modified DLVO simulation, and finally, the coagulation model is then analyzed in detail. It is indicative that the coagulation mechanism of inorganic coagulants can be understood better with the hydroxyl clusters being tailor-made.

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“…The electroactive copolymers not only have well‐defined conjugated segments but also provide a better understanding of the conducting mechanisms and structure–property relationships of the conjugated polymers. Electroactive polymers have both commercial and industrial applications in electronics, biology, and fluorescent sensing . These polymers are admirable platforms for the electrochemical sensing applications of ascorbic acid .…”

Section: Introductionmentioning

confidence: 99%

Aniline‐nonamer segmented polyurea: A facile electrocatalyst for detection of ascorbic acid

Arukula

Thota

Boga

et al. 2018

J of Applied Polymer Sci

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An unprecedented A‐B‐A type block copolymer electroactive polyurea (EPU) is designed and synthesized with tetraaniline dimer and 1,4‐phenylenediamine via an oxidative coupling, where aniline–nonamer and hexamethylene di‐urea constitute two segments. The EPU was characterized by spectral techniques such as Fourier transform infrared spectroscopy, nuclear magnetic resonance, and UV–vis spectra. The structural characterization of the prepared EPU was obtained by powder X‐ray diffraction and X‐ray photoelectron spectroscopy techniques. EPU reorganizes into core–shell microcapsules in presence of aqueous acetic acid/n‐octane interface. These microcapsules exhibited a wide range of pH responses in their absorption spectrum (UV–vis). The EPU is modified as carbon paste electrode which exhibits a remarkable electrocatalytic oxidation of ascorbic acid (AA, Vitamin C) in 0.2 M and pH 7.0 phosphate buffer solution. The carbon paste electrode is useful in sensing as low as 50 µM of ascorbic acid. This can open up new opportunities for fast, simple detection of AA providing a promising platform for sensor/biosensor designs for AA detection. © 2018 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2018, 135, 46630.

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Electroactive polymer with oligoanilines in the main chain and azo chromophores in the side chain: synthesis, characterization and dielectric properties

Cited by 21 publications

References 41 publications

Oligoaniline‐Containing Supramolecular Block Copolymer Nanodielectric Materials

Oligoaniline‐Containing Supramolecular Block Copolymer Nanodielectric Materials

Speciation, stability, and coagulation mechanisms of hydroxyl aluminum clusters formed by PACl and alum: A critical review

Aniline‐nonamer segmented polyurea: A facile electrocatalyst for detection of ascorbic acid

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