The role of steric interactions in dispersion of carbon nanotubes by poly(3-alkyl thiophenes) in organic solvents

Bar-Hen, Avraham; Bounioux, Céline; Yerushalmi‐Rozen, Rachel; Solveyra, Estefanía González; Szleifer, Igal

doi:10.1016/j.jcis.2015.04.038

Cited by 13 publications

(2 citation statements)

References 24 publications

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“…In most cases, ultrasonication was used for the surfactant (i.e., dispersant) system to facilitate the dispersion and stabilization of nanomaterials in the solvent. For the ultrasonication of MWCNTs dispersion solution, several examples in the literature use sonication times of 2 h and this literature standard was followed in the present work . A second step in the preparation of solutions of dispersed MWCNTs is to separate the dispersed phase from insoluble components.…”

Section: Resultsmentioning

confidence: 99%

A series of novel high‐temperature‐resistant multiwall carbon nanotubes dispersants: Polyphenylene sulfones with pyrene groups in main chain

Seery

Gao

et al. 2019

J of Applied Polymer Sci

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A series of polyphenylene sulfones were synthesized with pyrene groups in the main chain. Using a traditional Suzuki coupling reaction followed by a reduction, the pyrene-containing monomer was synthesized as the diphenol. A series of copolymers were synthesized using this new monomer, a biphenyldiphenol, and 4,4 0 -difluorodiphenylsulfone. These polymers were characterized using 1 HNMR and FTIR spectroscopy. The introduction of rigid pyrene groups provided these new polymers with good thermal stability and mechanical strength. In this work, these polymers are shown to functionalize and disperse multiwall carbon nanotubes (MWCNTs). The associations of our copolymers to the MWCNTs appear to operate through pi stacking interactions between the pyrene group and the sidewalls of the MWCNTs, referred to in this article as f-MWCNTs. The dispersibility of f-MWCNTs in solvents and polymer matrixes was systematically studied by preparation of f-MWCNTs/polyphenylene sulfone (PPSU) composites with various f-MWCNTs content. Improvements in the dispersability of f-MWCNTs in PPSU resin result in enhancement of the mechanical and thermal properties of f-MWCNTs/PPSU composites.In this study, polymeric dispersing agents are preferred to small molecule dispersants for modifying the MWCNTs by the noncovalent associations. Polymeric dispersants can provide multiple associations Additional Supporting Information may be found in the online version of this article.

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Section: Resultsmentioning

confidence: 99%

A series of novel high‐temperature‐resistant multiwall carbon nanotubes dispersants: Polyphenylene sulfones with pyrene groups in main chain

Seery

Gao

et al. 2019

J of Applied Polymer Sci

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“…Ren et al [15], reported the use of P3HT/ s-SWCNT nanofilaments in the solar cells active layer, absorption and quenching of the PL indicated significant interactions among the components and good electrical properties, they demonstrated that P3HT/s-SWCNT heterojunction can generate photocurrent of absorbed photons in both P3HT and s-SWCNT and achieve 26% near-infrared internal quantum efficiency (IQE). Bar-Hen et al [16], reported the electrospinning of fibers composed of P3HT, fullerene derivative, phenyl-C61-butyric acid methyl ester (PCBM), and SWCNT. They found a high degree of ordering and alignment within the fibers, significant interactions among the components, and strong photoluminescence quenching that points out to the efficient charge transfer in these nanocomposites.…”

Section: Introductionmentioning

confidence: 99%

Elaboration and characterization of P3HT–PEO–SWCNT fibers by electrospinning technique

et al. 2020

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In the present work, we report the preparation by the electrospinning technique and the characterization of poly(3hexylthiophene)-polyethylene oxide-single wall carbon nanotubes (P3HT-PEO-SWCNT) fibers. The SWCNT concentration into the P3HT-PEO matrix is varied from 0.2 to 1%. Optical, electrical, thermal, and morphological properties of the P3HT-PEO-SWCNT fibers are determined. The incorporation of the SWCNT into the P3HT-PEO polymer matrix is determined by SEM, EDS analysis, TEM, FTIR, and Raman. The optical properties are analyzed by the determination of photoluminescence and photoresponse. The stability and degradation temperature of the fibers are determined by TGA. The morphology of the P3HT-PEO-SWCNT fibers depends on the SWCNT concentration, in all cases non-beaded fibers are obtained. It is found that the SWCNT incorporating into the P3HT-PEO fibers increases the conjugation length of P3HT chains. Charge transfer from P3HT to SWCNT is corroborated by photoluminescence and Raman. The P3HT-PEO-SWCNT fibers obtained in this work exhibit interesting optoelectronic properties that could be useful for device applications.

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Estimating the interphase properties of polypropylene/carbon quantum dot nanocomposite fibers by micromechanical modeling

2018

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The role of steric interactions in dispersion of carbon nanotubes by poly(3-alkyl thiophenes) in organic solvents

Cited by 13 publications

References 24 publications

A series of novel high‐temperature‐resistant multiwall carbon nanotubes dispersants: Polyphenylene sulfones with pyrene groups in main chain

A series of novel high‐temperature‐resistant multiwall carbon nanotubes dispersants: Polyphenylene sulfones with pyrene groups in main chain

Elaboration and characterization of P3HT–PEO–SWCNT fibers by electrospinning technique

Estimating the interphase properties of polypropylene/carbon quantum dot nanocomposite fibers by micromechanical modeling

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