Aqueous suspensions of single-wall carbon nanotubes: Degree of aggregation into bundles and optical properties

A. V. Venediktova; V. N. Bocharov; A. Yu Vlasov; I. M. Kislyakov; V. M. Kiselev; E. A. Kats; E. D. Obraztsova; A. S. Pozharov; S. A. Povarov

doi:10.1134/S0030400X14030230

Aqueous suspensions of single-wall carbon nanotubes: Degree of aggregation into bundles and optical properties

A. V. Venediktova, V. N. Bocharov, A. Yu Vlasov, I. M. Kislyakov, V. M. Kiselev, E. A. Kats, E. D. Obraztsova, A. S. Pozharov, S. A. Povarov

Department of Chemistry

Research output: Contribution to journal › Article › peer-review

9 Scopus citations

Abstract

Aqueous suspensions of nanotubes, as well as the structure and optical properties of their aggregates (bundles), are studied by spectroscopy and high-resolution electron microscopy. The structure of nanoparticles is controlled by varying the ultrasonication time during preparation of suspensions. It is found that the defectiveness of nanotubes increases with decreasing bundle size. A correlation is shown to take place between the suspension preparation regime, the structure of nanoparticles, and the relaxation of the photoexcitation energy of their electronic shells. It is found that the efficiency of photoexcitation energy conversion into heat increases with increasing degree of aggregation of nanotubes into bundles.

Original language	English
Pages (from-to)	418-423
Number of pages	6
Journal	Optics and Spectroscopy (English translation of Optika i Spektroskopiya)
Volume	116
Issue number	3
DOIs	https://doi.org/10.1134/S0030400X14030230
State	Published - 1 Jan 2014

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Atomic and Molecular Physics, and Optics

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Venediktova, A. V., Bocharov, V. N., Vlasov, A. Y., Kislyakov, I. M., Kiselev, V. M., Kats, E. A., Obraztsova, E. D., Pozharov, A. S., & Povarov, S. A. (2014). Aqueous suspensions of single-wall carbon nanotubes: Degree of aggregation into bundles and optical properties. Optics and Spectroscopy (English translation of Optika i Spektroskopiya), 116(3), 418-423. https://doi.org/10.1134/S0030400X14030230

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abstract = "Aqueous suspensions of nanotubes, as well as the structure and optical properties of their aggregates (bundles), are studied by spectroscopy and high-resolution electron microscopy. The structure of nanoparticles is controlled by varying the ultrasonication time during preparation of suspensions. It is found that the defectiveness of nanotubes increases with decreasing bundle size. A correlation is shown to take place between the suspension preparation regime, the structure of nanoparticles, and the relaxation of the photoexcitation energy of their electronic shells. It is found that the efficiency of photoexcitation energy conversion into heat increases with increasing degree of aggregation of nanotubes into bundles.",

author = "Venediktova, {A. V.} and Bocharov, {V. N.} and Vlasov, {A. Yu} and Kislyakov, {I. M.} and Kiselev, {V. M.} and Kats, {E. A.} and Obraztsova, {E. D.} and Pozharov, {A. S.} and Povarov, {S. A.}",

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Venediktova, AV, Bocharov, VN, Vlasov, AY, Kislyakov, IM, Kiselev, VM, Kats, EA, Obraztsova, ED, Pozharov, AS & Povarov, SA 2014, 'Aqueous suspensions of single-wall carbon nanotubes: Degree of aggregation into bundles and optical properties', Optics and Spectroscopy (English translation of Optika i Spektroskopiya), vol. 116, no. 3, pp. 418-423. https://doi.org/10.1134/S0030400X14030230

TY - JOUR

T1 - Aqueous suspensions of single-wall carbon nanotubes

T2 - Degree of aggregation into bundles and optical properties

AU - Venediktova, A. V.

AU - Bocharov, V. N.

AU - Vlasov, A. Yu

AU - Kislyakov, I. M.

AU - Kiselev, V. M.

AU - Kats, E. A.

AU - Obraztsova, E. D.

AU - Pozharov, A. S.

AU - Povarov, S. A.

PY - 2014/1/1

Y1 - 2014/1/1

N2 - Aqueous suspensions of nanotubes, as well as the structure and optical properties of their aggregates (bundles), are studied by spectroscopy and high-resolution electron microscopy. The structure of nanoparticles is controlled by varying the ultrasonication time during preparation of suspensions. It is found that the defectiveness of nanotubes increases with decreasing bundle size. A correlation is shown to take place between the suspension preparation regime, the structure of nanoparticles, and the relaxation of the photoexcitation energy of their electronic shells. It is found that the efficiency of photoexcitation energy conversion into heat increases with increasing degree of aggregation of nanotubes into bundles.

AB - Aqueous suspensions of nanotubes, as well as the structure and optical properties of their aggregates (bundles), are studied by spectroscopy and high-resolution electron microscopy. The structure of nanoparticles is controlled by varying the ultrasonication time during preparation of suspensions. It is found that the defectiveness of nanotubes increases with decreasing bundle size. A correlation is shown to take place between the suspension preparation regime, the structure of nanoparticles, and the relaxation of the photoexcitation energy of their electronic shells. It is found that the efficiency of photoexcitation energy conversion into heat increases with increasing degree of aggregation of nanotubes into bundles.

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DO - 10.1134/S0030400X14030230

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SP - 418

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JO - Optics and Spectroscopy (English translation of Optika i Spektroskopiya)

JF - Optics and Spectroscopy (English translation of Optika i Spektroskopiya)

IS - 3

ER -

Aqueous suspensions of single-wall carbon nanotubes: Degree of aggregation into bundles and optical properties

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