Anchoring conductive polymeric monomers on single-walled carbon nanotubes: towards covalently linked nanocomposites

Naidek, Naiane; Huang, Kai; Bepete, George; Rocco, Maria Luiza M.; Pénicaud, Alain; Zarbin, Aldo J. G.; Orth, Elisa S.

doi:10.1039/c9nj01817d

Cited by 6 publications

(1 citation statement)

References 60 publications

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“…Carbon nanotubes (CNTs) are the one dimensional fibrous allotropes of carbon, discovered by Iijima in the year 1991, [1][2][3] which have drawn the focus of researchers because of their unique set of properties arising from the strong sp 2 near planner hybridisation of C-C bond. 4,5 Versatile application paradigm of CNTs includes electronics, structural composites, medicines, automotive industries and energy storage media, 3,[6][7][8] due to their high aspect ratio 9,10 and outstanding properties, 11,12 like low density (1.3 g/cm 3 ), 13 high elastic modulus (around 1.8 TPa), 14 high tensile strength (up to 300 GPa), 8 high bending strength, 15 exceptional thermo-oxidative stability, 16 low co-efficient of thermal expansion (CTE ¼ 0) 17 and high electrical conductivity. 18 Presently many material scientists emphasise to use CNTs as reinforcements in aluminium matrix composites (AMCs), as the CNTs improve their hardness, strength, toughness, resistance to creep and wear remarkably.…”

Section: Introductionmentioning

confidence: 99%

Effective functionalisation of carbon nanotubes for reinforcement application in liquid state processed aluminium composites: A relatively greener approach

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Rath

et al. 2020

Journal of Composite Materials

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This paper outlines an innovative approach to functionalise multiwall carbon nanotubes at a reduced functionalisation time and energy consumption, preserving their structural integrity, with objective of potential application of the carbon nanotubes as reinforcement in aluminium matrix composites processed through liquid state method. Longstanding problems of aluminium carbide formation as reaction by-product in aluminium matrix composites is expected to be reduced by reinforcing the carbon nanotubes functionalised through the developed method. Carbon nanotube surfaces were oxidised following four different methods using solutions of different acids at different parametric combinations, and the best possible method was identified through dispersion stability test, Fourier-transform infrared spectroscopy, scanning electron microscopy, Raman spectroscopy and thermogravimetric analysis. Results revealed that primary oxidation by 6M HNO3, followed by subsequent oxidation by weak acid H2O2 generated functionalised carbon nanotubes with satisfactory dispersion stability, preserved graphitic structure, high degree of structural integrity, less structural distortion and less carbon nanotube fragmentation.

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Section: Introductionmentioning

confidence: 99%

Effective functionalisation of carbon nanotubes for reinforcement application in liquid state processed aluminium composites: A relatively greener approach

Sahoo

Das

Rath

et al. 2020

Journal of Composite Materials

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Mechanische Verzahnung von einwandigen Kohlenstoffnanoröhren durch dynamisch‐kovalente Bildung von konkaven Disulfidmakrozyklen

et al. 2020

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Die Bildung von diskreten Makrozyklen, die sich um einwandige Kohlenstoffnanorçhren (SWCNTs) bilden, hat sich kürzlichals eine vielversprechende Strategie zur Funktionalisierung dieser Kohlenstoffnanomaterialien und der Modifizierung ihrer Eigenschaften herausgestellt. Hier zeigen wir, dass der reversible Disulfidaustausch,der unter milden Bedingungen abläuft, ideal geeignet ist, um relativ große Mengen mechanisch verzahnter Disulfidmakrozyklen auf den eindimensionalen Nanorçhren zu platzieren. Vermutlicha ls Folge der Fehlerkorrektur und der Anwesenheit von relativ starren, gebogenen p-Systemen in unseren Schlüsselbausteinen, konnten wir Beweise fürdie grçßenselektive Funktionalisierung von SWCNTs mit unterschiedlichem Durchmesser beobachten. Eine Kombination aus UV/vis/NIR, Raman, Photolumineszenz-Anregung (PLE) und transienten Absorptionsspektroskopien zeigte,d ass die kleinen (6,4)-SWCNTs überwiegend von den kleinen Makrozyklen 1 2 umschlossen wurden, wohingegen die grçßeren (6,5)-SWCNTs ideal fürd ie grçßeren Makrozyklen 2 2 schienen. Die Beobachtung der Grçßenselektivität, die computerchemisch rationalisiert wurde, kçnnte sich fürd ie Reinigung von Nanorçhrengemischen als nützlich erweisen, da wir in der Lage waren, die Disulfidmakrozyklen quantitativ unter milden Reduktionsbedingungen zu entfernen.

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Dynamic Covalent Formation of Concave Disulfide Macrocycles Mechanically Interlocked with Single‐Walled Carbon Nanotubes

et al. 2020

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The formation of discrete macrocycles wrapped around single-walled carbon nanotubes (SWCNTs) has recently emerged as an appealing strategy to functionalize these carbon nanomaterials and modify their properties.H ere,w e demonstrate that the reversible disulfide exchange reaction, which proceeds under mild conditions,c an install relatively large amounts of mechanically interlocked disulfide macrocycles on the one-dimensional nanotubes.S ize-selective functionalization of am ixture of SWCNTs of different diameters were observed, presumably arising from error correction and the presence of relatively rigid, curved p-systems in the key building blocks.Acombination of UV/Vis/NIR, Raman, photoluminescence excitation, and transient absorption spectroscopyindicated that the small (6,4)-SWCNTs were predominantly functionalizedbythe small macrocycles 1 2 ,whereas the larger (6,5)-SWCNTs were an ideal matchf or the larger macrocycles 2 2 .T his sizes electivity,w hich was rationalized computationally,c ould prove useful for the purification of nanotube mixtures,s ince the disulfide macrocycles can be removed quantitatively under mild reductive conditions.

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Anchoring conductive polymeric monomers on single-walled carbon nanotubes: towards covalently linked nanocomposites

Abstract: Chemical functionalization with conductive polymeric monomers on carbon nanotubes carried out by a straightforward method.

Cited by 6 publications

References 60 publications

Effective functionalisation of carbon nanotubes for reinforcement application in liquid state processed aluminium composites: A relatively greener approach

Effective functionalisation of carbon nanotubes for reinforcement application in liquid state processed aluminium composites: A relatively greener approach

Mechanische Verzahnung von einwandigen Kohlenstoffnanoröhren durch dynamisch‐kovalente Bildung von konkaven Disulfidmakrozyklen

Dynamic Covalent Formation of Concave Disulfide Macrocycles Mechanically Interlocked with Single‐Walled Carbon Nanotubes

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