Routes to the synthesis of carbon nanotube–polyacetylene composites by Ziegler–Natta polymerization of acetylene inside carbon nanotubes

Steinmetz, Johannes; Lee, Hyunjung; Kwon, Soyoung; Lee, Dong-Su; Goze-Bac, Christophe; Abou-Hamad, Edy; Kim, Hwayong; Park, YungWoo

doi:10.1016/j.cap.2005.08.004

Cited by 28 publications

(14 citation statements)

References 9 publications

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“…Previous studies have shown that polymer encapsulation in carbon nanotube channels is feasible using a two-step process. [114][115][116] Firstly, supercritical carbon dioxide carries the monomer (initiator) components into the carbon nanotube cavities. Secondly, aer the removal of carbon dioxide, the monomers are polymerized at a certain temperature.…”

Section: Endohedral Llingmentioning

confidence: 99%

A review of the interfacial characteristics of polymer nanocomposites containing carbon nanotubes

et al. 2018

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Section: Endohedral Llingmentioning

confidence: 99%

A review of the interfacial characteristics of polymer nanocomposites containing carbon nanotubes

et al. 2018

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“…So far, many dopants such as iodine, boron, nitrogen, bromine, FeCl 3 , Cs, K, C 60 , poly͑N-vinyl carbazole͒, polypyrrole, and polyacetylene have been doped into multiwalled nanotube ͑MWNT͒ and single-walled carbon nanotube ͑SWNT͒. [2][3][4][5][6][7][8][9][10][11][12][13] Among the doped SWNT, iodine-doped SWNT ͑I@SWNT͒ are particularly interesting. The iodine is intercalated into the hollow space of SWNT, depending on the diameter of the SWNT, exists in the form of atomic chains or polymorphic structures inside the SWNT.…”

Section: Introductionmentioning

confidence: 99%

Magnetotransport in iodine-doped single-walled carbon nanotubes

et al. 2009

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Magnetoresistance ͑MR͒ and magnetothermoelectric power ͑MTEP͒ of iodine-doped single-walled carbon nanotubes ͑I@SWNT͒ under magnetic fields up to 14 T are investigated from room temperature ͑300 K͒ down to 1.6 K. Our results on resistivity and thermoelectricpower ͑TEP͒ in a zero magnetic field are similar to those reported by Grigorian et al. ͓Phys. Rev. Lett. 80, 5560 ͑1998͔͒ The positive sign of the TEP values indicates that the majority of the carriers in the I@SWNT are holes. The broad enhancement of TEP at temperatures of 30-200 K shows quasilinear temperature dependence and is consistent with sharply varying density of states near the Fermi level with additional contribution from the spin-orbit scattering in the normal metallic characteristics of the I@SWNT. For T Ͻ 7 K, MR is negative and it decreases with H 2 followed by the H 1/2 dependence at around H = 2 T which is characteristic for the weak localization. In the range 7 KϽ T Ͻ 70 K, MR is positive at low magnetic field and becomes negative at higher magnetic field. The negative MR in the high magnetic fields decreases linearly. At T Ն ϳ 100 K, MR is positive up to 14 T, which could be the result of spin-orbit scattering in the I@SWNT. The MTEP decreases under magnetic field at T Ͻ 90 K. The reduction in MTEP is originated from the delocalization of electron wave functions under the magnetic field. At T Ͼ 90 K, the thermal fluctuation dominates the effect of magnetic fields resulting the MTEP to be the same as the zero magnetic field TEP.

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“…[16][17][18][19] A polymer chain inside a very narrow CNT corresponds to c eff 5 0, because the confinement would constrain the polymer chain, severely restricting its displacements away from the CNT axis. McIntosh et al 20 calculated the equilibrium distance between a polyacetylene chain and a CNT wall to be 3.3 Å.…”

Section: Thermal Expansion Of a Bead Chain In C $mentioning

confidence: 99%

Engineering materials properties in codimension > 0

2011

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When thin nanomaterials spontaneously deform into nonflat geometries (e.g., nanorods into nanohelices, thin sheets into ruffled forms), their properties may change by orders of magnitude. We discuss this phenomenon in terms of a formal mathematical concept: codimension c 5 D À d, the difference between the dimensionality of space D, and that of the object d. We use several independent examples such as the edge stress of graphene nanoribbons, the elastic moduli of nanowires, and the thermal expansion of a modified bead-chain model to demonstrate how this framework can be used to generically understand some nanomaterial properties and how these properties can be engineered by using mechanical constraints to manipulate the codimension of the corresponding structure.

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Routes to the synthesis of carbon nanotube–polyacetylene composites by Ziegler–Natta polymerization of acetylene inside carbon nanotubes

Cited by 28 publications

References 9 publications

A review of the interfacial characteristics of polymer nanocomposites containing carbon nanotubes

A review of the interfacial characteristics of polymer nanocomposites containing carbon nanotubes

Magnetotransport in iodine-doped single-walled carbon nanotubes

Engineering materials properties in codimension > 0

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