Covalent crosslinking of single-walled carbon nanotubes with poly(allylamine) to produce mechanically robust composites

Satti, Amro; Perret, Amandine; McCarthy, Joseph E.; Gun’ko, Yurii K.

doi:10.1039/c0jm01515f

Cited by 24 publications

(14 citation statements)

References 30 publications

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“…6 To this end, SWCNTs have been trapped within other gel-forming systems such as polymers, [7][8][9] DNA, 10 surfactants, 11 silica 12 and resorcinolformaldehyde. 13 To avoid the contaminating, oen insulating, secondary gel-former, SWCNTs have been cross-linked using a range of strategies, including cycloaddition reactions, 14 Sonogashira coupling, 15 linking of pre-introduced carboxyl 16 or hydroxyl 17 functionalities with bi-(or tri)-functional reagents, and even dry via electron beam irradiation. 18 However, existing methods tend to degrade the SWCNTs aspect ratio, damage the carbon framework and debundle inefficiently.…”

mentioning

confidence: 99%

Cross-linked single-walled carbon nanotube aerogel electrodes via reductive coupling chemistry

et al. 2016

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mentioning

confidence: 99%

Cross-linked single-walled carbon nanotube aerogel electrodes via reductive coupling chemistry

et al. 2016

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“…Chemical functionalization of carbon nanomaterials by covalent36, 45, 53–58 or noncovalent methods59–63 can significantly affect the conductivity and mechanical properties of the composite film. The effect of chemical functionalisation on carbon nanomaterials is the subject of many reviews 25, 53, 64–66.…”

Section: Carbon‐based Nanomaterials To Replace Transparent Electrodesmentioning

confidence: 99%

Carbon Nanomaterials for Dye‐Sensitized Solar Cell Applications: A Bright Future

Brennan

Byrne

Bari

et al. 2011

Advanced Energy Materials

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There is an urgent need for alternative energy resources due to the rapid rise in the price of fossil fuels and the great danger of the increasing greenhouse effect caused by carbon dioxide emission. Sunlight provides by far the largest of all carbon-neutral energy sources. Therefore, the current solar-or photovoltaic-cell-based technologies, which can utilize solar energy, are of extreme importance. Dye-sensitized solar cells (DSSCs) are of particular interest because they can offer a number of advantages when compared to existing photovoltaic technologies. In this review, recent advances in carbonrelated nanomaterials and their application as materials for DSSCs are discussed. Carbon nanomaterials such as carbon nanotubes and graphene display remarkable electrical, thermal, and mechanical properties that enable several exciting applications in DSSCs. The progress on the utilisation of carbon nanotubes, graphene, and their nanocomposites is reviewed as highly prospective materials to replace transparent conductive oxide (TCO) layers and counter electrodes in DSSCs. Moreover, carbon nanomaterials enable improvement of the performance of absorbing layers in working photoanodes by enhancing the light absorption and electron transport across the semiconducting nanostructured fi lm. The application of carbon nanotubes, graphite particles, and graphene as additives towards the improved effi ciency of the electrolyte in these solar cells is also discussed. Finally, a brief outlook is provided on the future development of carbon nanomaterial composites as prospective materials for DSSCs, particularly as components for printable solar cells, which are expected to play an important role in the future solarcell market.

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“…Thin sheets made from an aggregate of carbon nanotubes, known as buckypaper, have been mechanically reinforced by covalent cross-linking with polymers. 18 In the present study, both ends of individual CNTs were functionalized with carboxyl and hydroxyl groups and then thermally cross-linked together with polyvinylpyrrolidone (PVP). To the knowledge of the author, no one has reported this process to cross-link carbon nanotubes.…”

Section: Introductionmentioning

confidence: 99%

High-Temperature Cross-Linking of Carbon Nanotube Multi-Yarn Using Polyvinylpyrrolidone as a Binding Agent

Misak¹,

Asmatulu²,

Whitman³

et al. 2015

j nanosci nanotechnol

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Carbon nanotube (CNT) multi-yarn was cross-linked together at elevated temperatures using a poly- mer, with the intent of improving their strength and electrical conductivity. They were functionalized using an acid treatment and immersed in a bath of different concentrations (0.5%, 0.1%, and 0.2%) of polyvinylpyrrolidone (PVP). Then they were placed in an oven at various temperatures (180 °C, 200 °C, and 220 °C) in order to cause cross-linking among the carbon nanotube yarns. The phys- ical, chemical, electrical, and mechanical properties of the cross-linked yarns were investigated. The yarns cross-linked at higher temperatures and greater concentrations of PVP had a greater increase in linear mass density, indicating that the cross-linking process had worked as expected. Yarns that were cross-linked at lower temperatures had greater tensile strength and better spe- cific electrical conductivity. Those that were treated with a greater concentration of polymer had a greater ultimate tensile strength. All these results are encouraging first step, but still need further development if CNT yarn is to replace copper wire.

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Covalent crosslinking of single-walled carbon nanotubes with poly(allylamine) to produce mechanically robust composites

Cited by 24 publications

References 30 publications

Cross-linked single-walled carbon nanotube aerogel electrodes via reductive coupling chemistry

Cross-linked single-walled carbon nanotube aerogel electrodes via reductive coupling chemistry

Carbon Nanomaterials for Dye‐Sensitized Solar Cell Applications: A Bright Future

High-Temperature Cross-Linking of Carbon Nanotube Multi-Yarn Using Polyvinylpyrrolidone as a Binding Agent

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