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Title: Rotational dynamics of confined C60 from near-infrared Raman studies under high pressure

Abstract

Peapods present a model system for studying the properties of dimensionally constrained crystal structures, whose dynamical properties are very important. We have recently studied the rotational dynamics of C60 molecules confined inside single walled carbon nanotube (SWNT) by analyzing the intermediate frequency mode lattice vibrations using near-infrared Raman spectroscopy. The rotation of C60 was tuned to a known state by applying high pressure, at which condition C60 first forms dimers at low pressure and then forms a single-chain, nonrotating, polymer structure at high pressure. In the latter state the molecules form chains with a 2-fold symmetry. We propose that the C60 molecules in SWNT exhibit an unusual type of ratcheted rotation due to the interaction between C60 and SWNT in the “hexagon orientation,” and the characteristic vibrations of ratcheted rotation becomes more obvious with decreasing temperature.

Authors:
 [1];  [1];  [1];  [1];  [1];  [1];  [1];  [1];  [1];  [1];  [1];  [1];  [2];  [2];  [3]
  1. Jilin Univ., Changchun (China). State Key Laboratory of Superhard Materials
  2. Umea Univ. (Sweden)
  3. Jilin Univ., Changchun (China). State Key Laboratory of Superhard Materials; Carnegie Inst. of Washington, Washington, DC (United States). Geophysical Lab.
Publication Date:
Research Org.:
Energy Frontier Research Centers (EFRC) (United States). Energy Frontier Research in Extreme Environments (EFree)
Sponsoring Org.:
USDOE
OSTI Identifier:
1065552
DOE Contract Number:  
SC0001057
Resource Type:
Journal Article
Journal Name:
Proceedings of the National Academy of Sciences of the United States of America
Additional Journal Information:
Journal Volume: 106; Journal Issue: 52; Related Information: EFree partners with Carnegie Institution of Washington (lead); California Institute of Technology; Colorado School of Mines; Cornell University; Lehigh University; Pennsylvania State University; Journal ID: ISSN 0027-8424
Publisher:
National Academy of Sciences, Washington, DC (United States)
Country of Publication:
United States
Language:
English
Subject:
catalysis (heterogeneous), solar (photovoltaic), phonons, thermoelectric, energy storage (including batteries and capacitors), hydrogen and fuel cells, superconductivity, charge transport, mesostructured materials, materials and chemistry by design, synthesis (novel materials)

Citation Formats

Zou, Y., Liu, B., Wang, L., Liu, D., Yu, S., Wang, P., Wang, T., Yao, M., Li, Q., Zou, B., Cui, T., Zou, G., Wagberg, T., Sundqvist, B., and Mao, H.-K. Rotational dynamics of confined C60 from near-infrared Raman studies under high pressure. United States: N. p., 2009. Web. doi:10.1073/pnas.0911963106.
Zou, Y., Liu, B., Wang, L., Liu, D., Yu, S., Wang, P., Wang, T., Yao, M., Li, Q., Zou, B., Cui, T., Zou, G., Wagberg, T., Sundqvist, B., & Mao, H.-K. Rotational dynamics of confined C60 from near-infrared Raman studies under high pressure. United States. https://doi.org/10.1073/pnas.0911963106
Zou, Y., Liu, B., Wang, L., Liu, D., Yu, S., Wang, P., Wang, T., Yao, M., Li, Q., Zou, B., Cui, T., Zou, G., Wagberg, T., Sundqvist, B., and Mao, H.-K. 2009. "Rotational dynamics of confined C60 from near-infrared Raman studies under high pressure". United States. https://doi.org/10.1073/pnas.0911963106.
@article{osti_1065552,
title = {Rotational dynamics of confined C60 from near-infrared Raman studies under high pressure},
author = {Zou, Y. and Liu, B. and Wang, L. and Liu, D. and Yu, S. and Wang, P. and Wang, T. and Yao, M. and Li, Q. and Zou, B. and Cui, T. and Zou, G. and Wagberg, T. and Sundqvist, B. and Mao, H.-K.},
abstractNote = {Peapods present a model system for studying the properties of dimensionally constrained crystal structures, whose dynamical properties are very important. We have recently studied the rotational dynamics of C60 molecules confined inside single walled carbon nanotube (SWNT) by analyzing the intermediate frequency mode lattice vibrations using near-infrared Raman spectroscopy. The rotation of C60 was tuned to a known state by applying high pressure, at which condition C60 first forms dimers at low pressure and then forms a single-chain, nonrotating, polymer structure at high pressure. In the latter state the molecules form chains with a 2-fold symmetry. We propose that the C60 molecules in SWNT exhibit an unusual type of ratcheted rotation due to the interaction between C60 and SWNT in the “hexagon orientation,” and the characteristic vibrations of ratcheted rotation becomes more obvious with decreasing temperature.},
doi = {10.1073/pnas.0911963106},
url = {https://www.osti.gov/biblio/1065552}, journal = {Proceedings of the National Academy of Sciences of the United States of America},
issn = {0027-8424},
number = 52,
volume = 106,
place = {United States},
year = {Tue Dec 29 00:00:00 EST 2009},
month = {Tue Dec 29 00:00:00 EST 2009}
}