A new designed π conjugated molecule for stable single walled carbon nanotube dispersion in aqueous medium

Nogueira, S.; Sahoo, Sangram K.; Jarrosson, Thibaut; Serein-Spirau, Françoise; Lère‐Porte, Jean‐Pierre; Moujaes, Elie A.; Marletta, Alexandre; Santos, Adelina P.; Fantini, C.; Furtado, Clascídia Aparecida; Silva, R.A.

doi:10.1016/j.jcis.2015.11.016

Cited by 11 publications

(6 citation statements)

References 38 publications

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“…In a previous study, a phenylene ethynylene oligomer, bearing two hexyloxy chains substituted with two imidazolium chloride moieties, was prepared by a two-step method. 37…”

Section: Resultsmentioning

confidence: 99%

“…The spectral data agree with those reported in the literature. 45 1 H NMR (400 MHz, CD 3 OD- d 4 ) δ = 7.60 (dd, J = 3.7 Hz, J = 1.0 Hz, 2H), 7.47 (d, J = 2.1 Hz, 2H), 7.44 (d, J = 2.1 Hz, 2H), 7.42 (dd, J = 5.1 Hz, J = 1.0 Hz, 2H), 7.33 (s, 2H), 7.10 (dd, J = 5.1 Hz, J = 3.7 Hz, 2H), 4.16–4.28 (m, 8H), 3.60 (s, 6H), 2.35 (s, 6H), 1.71–1.46 (m, 8H), 1.38–1.22 (m, 4H), 1.15 (m, 4H) ppm. 13 C NMR (101 MHz, CD 3 OD- d 4 ), δ = 150.4 (C Ph ), 145.8 (C Im ), 140.1 (C Th ), 127.8 (C Th ), 127.0 (C Ar ), 126.4 (C Ar ), 124.2 (C Ar ), 123.6 (C Ar ), 122.1 (C Ar ), 113.6 (C Ph ), 70.5 (O–CH 2 ), 54.9 (N–CH 2 ), 35.4 (N–CH 3 ), 30.8 (CH 2 ), 30.3 (CH 2 ), 27.02 (CH 2 ), 27.00 (CH 2 ), 9.6 (CH 3 ) ppm.…”

Section: Materials and Instrumentationmentioning

confidence: 99%

“…In a previous study, a phenylene ethynylene oligomer, bearing two hexyloxy chains substituted with two imidazolium chloride moieties, was prepared by a two-step method. 37 To obtain the first family of oligoelectrolyte compounds, 1,4bis(thiophen-2-yl)-2,5-bis(6-chlorohexyloxy)benzene was reacted under basic conditions and microwave activation in which the organic base acted as a nucleophilic reagent. Precisely, 2,3dimethylimidazole, pyridine and triethylamine quasi-quantitatively led to the formation of (2.Cl), (3.Cl) and (4.Cl), respectively, after precipitation in diethylether (Scheme 1).…”

Section: Synthesismentioning

confidence: 99%

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Synthesis, solubility and optical properties of π-conjugated oligoelectrolytes derived from bis-thiophene-dialkoxyphenylene derivatives

et al. 2023

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“…In a previous study, a phenylene ethynylene oligomer, bearing two hexyloxy chains substituted with two imidazolium chloride moieties, was prepared by a two-step method. 37…”

Section: Resultsmentioning

confidence: 99%

Section: Materials and Instrumentationmentioning

confidence: 99%

Section: Synthesismentioning

confidence: 99%

See 1 more Smart Citation

Synthesis, solubility and optical properties of π-conjugated oligoelectrolytes derived from bis-thiophene-dialkoxyphenylene derivatives

et al. 2023

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“…TPO provides synergistic π-π stacking, charge transfer and cation-π interactions. The dispersions even prepared using very low concentration of TPO (0.5 mg/mL) or SWCNTs (0.02 mg/mL) show long-time stability for twelve months [64]. Blanch et al [51] systematically studied into the ability of some well-known surfactants and polymers to disperse SWCNTs.…”

Section: Non-ionic Surfactantmentioning

confidence: 99%

Mechanical Properties of Carbon Nanotubes-Polymer Composites

Dai¹,

Sun²

2016

Carbon Nanotubes - Current Progress of Their Polymer Composites

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Carbon nanotubes CNTs , as a one-dimensional material, have outstanding mechanical properties such as extreme tensile strength and Young s modulus. At present, to prepare pure CNTs materials is quite difficult and the mechanical properties of the materials are limited in a low level. Because of their extraordinary mechanical properties and high aspect ratio, CNTs are considered to be ideal candidates for polymer reinforcement. In addition, CNTs/polymer composite materials are much easier to prepare than pure CNTs materials, so they have been paid much attention by researchers recently. However, challenges must be faced to prepare the CNTs/polymer composite with ultimate mechanical properties. So in this chapter, the main concerns are how to disperse CNTs in polymer matrix to prepare homogenous composite dispersions, how to prepare homogenous CNTs/polymer composite using possible fabricating processes based on the homogenous dispersions, how to increase the fiber mechanical properties especially through the enhancing interaction between polymer and CNTs, controlling the amount of CNTs and enhancing their orientation in the matrix.

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“…The high surface area of nanoparticles can significantly affect stability of particles in aqueous media. There is considerable interest in this topic because the demand to obtain highly stable suspensions of colloid spans a wide range of technological applications including composites materials, catalysis, emulsion products, drug carriers, coating, and printing, among others . This work compares several methods for improving colloidal stability of carbon nanotube (CNT) in water.…”

Section: Introductionmentioning

confidence: 99%

Colloidal Stability in Water of Modified Carbon Nanotube: Comparison of Different Modification Techniques

Seneewong-Na-Ayutthaya

Pongprayoon

O’Rear

2016

Macro Chemistry & Physics

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The colloidal stability of carbon nanotube (CNT) in water is an important property for several applications. Three different functionalization approaches defined as nondestructive techniques have been carried out to modify the CNT surface and the product CNT compared. First, admicellar polymerization is used to form a water‐soluble polymer on CNT with two different polymers, polyacrylic acid and polyvinyl acetate (PVAc). Second, coatings of soluble biopolymers are applied using dextran and chitosan. Third, mild acid oxidation conditions from the literature are employed with hydrogen peroxide (H2O2) and with potassium permanganate (KMnO4) as oxidizing agents. The colloidal stability of modified CNT is examined by sedimentation and by turbidity measurements along with laser particle size analysis. Thermogravimetric Analysis, energy dispersive X‐ray analysis, scanning electron microscope, and transmission electron microscopy are used to confirm that modification of the CNT is successfully implemented with each technique. Lastly, FT‐Raman is used to assess damage to the CNT structure after modification. A focus of the turbidity measurements is quantitative analysis using numerical integration of variability to evaluate colloidal stability. All modified CNT samples clearly yield improved aqueous dispersions. For each of the three approaches, the better option is KMnO4 for mild acid oxidation, PVAc for admicellar polymerization, and chitosan for biopolymer deposition.

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A new designed π conjugated molecule for stable single walled carbon nanotube dispersion in aqueous medium

Cited by 11 publications

References 38 publications

Synthesis, solubility and optical properties of π-conjugated oligoelectrolytes derived from bis-thiophene-dialkoxyphenylene derivatives

Synthesis, solubility and optical properties of π-conjugated oligoelectrolytes derived from bis-thiophene-dialkoxyphenylene derivatives

Mechanical Properties of Carbon Nanotubes-Polymer Composites

Colloidal Stability in Water of Modified Carbon Nanotube: Comparison of Different Modification Techniques

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