Dissolution of Single-Walled Carbon Nanotubes

Hamon, Mark A.; Chen, Jian; Hu, Hui; Chen, Yongsheng; Itkis, M. E.; Rao, Apparao M.; Eklund, P. C.; Haddon, Robert C.

doi:10.1002/(sici)1521-4095(199907)11:10<834::aid-adma834>3.0.co;2-r

Cited by 571 publications

(414 citation statements)

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“…This method, based on a treatment in concentrated HNO 3 or mixtures of H 2 SO 4 and HNO 3 , is generally used to attach functional groups to the defects on CNTs. 23,25,48 For example, acid functionalization of MWCNTs (i.e. COOH grafting) leads to improved MWCNT solubility in water allowing for homogeneous and stable dispersions.…”

Section: Resultsmentioning

confidence: 99%

Monitoring oxidation of multiwalled carbon nanotubes by Raman spectroscopy

Osswald

Havel

Gogotsi

2007

J Raman Spectroscopy

569

367

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Multiwalled carbon nanotubes (MWCNTs) were oxidized in air and acids while varying the treatment time and/or temperature. The goal of this approach was to create the highest density of carboxyl groups with moderate sample loss, which is necessary for nanocomposite applications. In situ Raman experiments allowed real-time observation of the structural changes in MWCNTs upon oxidation. The ratio of the Raman intensities of the D and G bands was used to estimate the concentration of defects. It was found that while an oxidation for 6 h in H 2 SO 4 /HNO 3 provided the strongest effect, a 'flash oxidation' in air (15 min at 550°C) also leads to an efficient functionalization in a cost-effective and environmentally friendly way. Transmission electron microscopy, Fourier-transform infrared (FTIR) spectroscopy, thermogravimetric analysis and electrophoretic mobility analysis were used to study the oxidized nanotubes.

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Section: Resultsmentioning

confidence: 99%

Monitoring oxidation of multiwalled carbon nanotubes by Raman spectroscopy

Osswald

Havel

Gogotsi

2007

J Raman Spectroscopy

569

367

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“…While the tetradecylaniline functionalization yielded s-s-SWNTs soluble in THF, CS 2 , and aromatic solvents, the aniline derivatives were appreciably soluble only in aniline. 83 It may thus be inferred that the long-chain hydrocarbon plays an important role in disrupting and compensating for the loss of the van der Waals attraction between the carbon nanotubes.…”

Section: Scheme 1 Reactions Of Ap-swntsmentioning

confidence: 99%

“…Similar effects may be observed by doping solutions of the nanotubes with halogens. 7,83 Under saturation doping, 7 bromine and iodine completely deplete the electrons from the valence band responsible for the S 11 transition in the semiconducting nanotubes, and both reagents also affect the S 22 transition ( Figure 5). Similar results were obtained under electrochemical cycling 63 and by controlled doping of thin films of carbon nanotubes.…”

Section: Ionic Chemistry (Doping)mentioning

confidence: 99%

Chemistry of Single-Walled Carbon Nanotubes

et al. 2002

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In this Account we highlight the experimental evidence in favor of our view that carbon nanotubes should be considered as a new macromolecular form of carbon with unique properties and with great potential for practical applications. We show that carbon nanotubes may take on properties that are normally associated with molecular species, such as solubility in organic solvents, solutionbased chemical transformations, chromatography, and spectroscopy. It is already clear that the nascent field of nanotube chemistry will rival that of the fullerenes.

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“…For that purpose, proper chemical treatments are required to attach functional groups to filler surface which can react with the matrix [65][66][67][68][69][70]. Figure 5a-c shows three types of surface functionalization of CNT with polymer chains, hydroxyl, and carboxyl groups, respectively.…”

Section: Covalent Interactionsmentioning

confidence: 99%

A review on the role of interface in mechanical, thermal, and electrical properties of polymer composites

Kashfipour

Mehra

Zhu

2018

Adv Compos Hybrid Mater

176

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Composite materials and especially polymer composites are widely used in daily life and different industries due to their vastly different properties and design flexibility. It is known that the properties of the composites are strongly related to the properties of its constituents. However, it has been reported in many studies, experimentally and by simulations, that the characteristics of the composites do not follow the rule of mixing. It means that in addition to properties of the constituents, there are other parameters affecting the final physicochemical properties of composites. The interfacial interactions between fillers and host is one of the factors which can strongly affect the properties of the composite. In this review, we summarized the type of interactions between the constituents, their improvement techniques, interaction measurement methods, and the effects of interfacial interactions on thermal, mechanical, and electrical properties of composites.

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Dissolution of Single-Walled Carbon Nanotubes

Abstract: We thank M. Thompson (Digital Instruments), for AFM measurements.

Cited by 571 publications

References 0 publications

Monitoring oxidation of multiwalled carbon nanotubes by Raman spectroscopy

Monitoring oxidation of multiwalled carbon nanotubes by Raman spectroscopy

Chemistry of Single-Walled Carbon Nanotubes

A review on the role of interface in mechanical, thermal, and electrical properties of polymer composites

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