Electron localization and delocalization in biselectrophores

Rautter, J.; Grupp, A.; Mehring, M.; Alexander, J.; Müllen, Kläus; Huber, Walter

doi:10.1080/00268979200101151

Cited by 3 publications

(1 citation statement)

References 12 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…We turn now to the discussion on spin−spin relaxation T 2 , which is sensitive to fluctuating local fields on a time scale of about the line width (3 kHz in our case at 4.7 T). Figure presents the 1/ T 2 relaxation rate from 300 K down to 5 K. A peak appears in 1/ T 2 around 25 K. In order to model the 1/ T 2 relaxation rate, we apply the following relation: , 1 T 2 = 1 40 Δ ω S 2 true( 3 2 τ 1 + ω 0 2 τ 2 + 4 2 τ 1 + Δ ω S 2 τ 2 true) where Δω S corresponds to CSA fluctuations caused by reorientational process. The slow motion regime is observed when Δω S τ ≫ 1 and the fast motional narrowing case for Δω S τ ≪ 1.…”

Section: Resultsmentioning

confidence: 99%

Molecular Dynamics and Phase Transition in One-Dimensional Crystal of C₆₀ Encapsulated Inside Single Wall Carbon Nanotubes

et al. 2009

View full text Add to dashboard Cite

One-dimensional crystals of 25% 13C-enriched C60 encapsulated inside highly magnetically purified SWNTs were investigated by following the temperature dependence of the 13C NMR line shapes and the relaxation rates from 300 K down to 5 K. High-resolution MAS techniques reveal that 32% of the encapsulated molecules, so-called the C60 α, are blocked at room temperature and 68%, labeled C60 β, are shown to reversly undergo molecular reorientational dynamics. Contrary to previous NMR studies, spin−lattice relaxation time reveals a phase transition at 100 K associated with the changes in the nature of the C60 β dynamics. Above the transition, the C60 β exhibits continuous rotational diffusion; below the transition, C60 β executes uniaxial hindered rotations most likely along the nanotubes axis and freeze out below 25 K. The associated activation energies of these two dynamical regimes are measured to be 6 times lower than in fcc-C60, suggesting a quiet smooth orientational dependence of the interaction between C60 β molecules and the inner surface of the nanotubes.

show abstract

Section: Resultsmentioning

confidence: 99%

Molecular Dynamics and Phase Transition in One-Dimensional Crystal of C₆₀ Encapsulated Inside Single Wall Carbon Nanotubes

et al. 2009

View full text Add to dashboard Cite

show abstract

Properties of Cs-intercalated single wall carbon nanotubes investigated by 133Cs Nuclear Magnetic resonance

Schmid

Mahfouz

Bouhrara

et al. 2012

Carbon

View full text Add to dashboard Cite

Rotational dynamics ofC604−and electronic excitation inRb
Zimmer
¹
,
Mehring
²
,
Goze
³

et al. 1995
Phys. Rev. B
35
1
22
0
View full text Add to dashboard Cite

Electron localization and delocalization in biselectrophores

Cited by 3 publications

References 12 publications

Molecular Dynamics and Phase Transition in One-Dimensional Crystal of C₆₀ Encapsulated Inside Single Wall Carbon Nanotubes

Molecular Dynamics and Phase Transition in One-Dimensional Crystal of C₆₀ Encapsulated Inside Single Wall Carbon Nanotubes

Properties of Cs-intercalated single wall carbon nanotubes investigated by 133Cs Nuclear Magnetic resonance

Rotational dynamics ofC604−and electronic excitation inRb
Zimmer
¹
,
Mehring
²
,
Goze
³

et al. 1995
Phys. Rev. B
35
1
22
0
View full text Add to dashboard Cite

Contact Info

Product

Resources

About

Electron localization and delocalization in biselectrophores

Cited by 3 publications

References 12 publications

Molecular Dynamics and Phase Transition in One-Dimensional Crystal of C60 Encapsulated Inside Single Wall Carbon Nanotubes

Molecular Dynamics and Phase Transition in One-Dimensional Crystal of C60 Encapsulated Inside Single Wall Carbon Nanotubes

Properties of Cs-intercalated single wall carbon nanotubes investigated by 133Cs Nuclear Magnetic resonance

Rotational dynamics ofC604−and electronic excitation inRbZimmer1, Mehring2, Goze3 et al. 1995Phys. Rev. B351220View full textAdd to dashboardCite

Contact Info

Product

Resources

About

Molecular Dynamics and Phase Transition in One-Dimensional Crystal of C₆₀ Encapsulated Inside Single Wall Carbon Nanotubes

Molecular Dynamics and Phase Transition in One-Dimensional Crystal of C₆₀ Encapsulated Inside Single Wall Carbon Nanotubes

Rotational dynamics ofC604−and electronic excitation inRb
Zimmer
¹
,
Mehring
²
,
Goze
³

et al. 1995
Phys. Rev. B
35
1
22
0
View full text Add to dashboard Cite