An inelastic neutron scattering, Raman, far-infrared, and molecular dynamics study of the intermolecular dynamics of two ionic liquids

2020 ◽  
Vol 22 (16) ◽  
pp. 9074-9085 ◽  
Author(s):  
Thamires A. Lima ◽  
Vitor H. Paschoal ◽  
Rafael S. Freitas ◽  
Luiz F. O. Faria ◽  
Zhixia Li ◽  
...  
Keyword(s):  
Molecular Dynamics ◽  
Ionic Liquids ◽  
Power Spectrum ◽  
Neutron Scattering ◽  
Inelastic Neutron Scattering ◽  
Far Infrared ◽  
Md Simulations ◽  
Inelastic Neutron ◽  
Tetraalkylammonium Cations

The THz dynamics of ionic liquids based on tetraalkylammonium cations were investigated by a combined usage of inelastic neutron scattering (INS), Raman, and far-infrared (FIR) spectroscopies and the power spectrum calculated by molecular dynamics (MD) simulations.

Low-frequency single-crystal Raman, far-infrared, and inelastic neutron scattering studies of acetanilide at low temperature

1991 ◽  
Vol 95 (13) ◽  
pp. 5281-5286 ◽  
Author(s):  
Clifford T. Johnston ◽  
Stephen F. Agnew ◽  
Juergen Eckert ◽  
Llewellyn H. Jones ◽  
Basil I. Swanson ◽  
...  
Keyword(s):  
Low Temperature ◽  
Neutron Scattering ◽  
Single Crystal ◽  
Inelastic Neutron Scattering ◽  
Low Frequency ◽  
Far Infrared ◽  
Inelastic Neutron

Molecular dynamics in gaseous and solid methane studied by the inelastic neutron scattering method

Physica ◽  
1969 ◽  
Vol 41 (3) ◽  
pp. 397-408 ◽  
Author(s):  
A. Bajorek ◽  
I. Natkaniec ◽  
K. Parliński ◽  
M. Sudnik-Hrynkiewicz ◽  
J.A. Janik ◽  
...  
Keyword(s):  
Molecular Dynamics ◽  
Neutron Scattering ◽  
Inelastic Neutron Scattering ◽  
Inelastic Neutron ◽  
Scattering Method ◽  
Solid Methane

scholarly journals Correlation of the dynamics of native human acetylcholinesterase and its inhibited huperzine A counterpart from sub-picoseconds to nanoseconds

2014 ◽  
Vol 11 (97) ◽  
pp. 20140372 ◽  
Author(s):  
M. Trapp ◽  
M. Tehei ◽  
M. Trovaslet ◽  
F. Nachon ◽  
N. Martinez ◽  
...  
Keyword(s):  
Molecular Dynamics ◽  
Neutron Scattering ◽  
Molecular Dynamics Simulations ◽  
Inelastic Neutron Scattering ◽  
Thermal Fluctuations ◽  
Inelastic Neutron ◽  
Huperzine A ◽  
Relaxation Dynamics ◽  
Elastic Neutron ◽  
Dynamics Simulations

It is a long debated question whether catalytic activities of enzymes, which lie on the millisecond timescale, are possibly already reflected in variations in atomic thermal fluctuations on the pico- to nanosecond timescale. To shed light on this puzzle, the enzyme human acetylcholinesterase in its wild-type form and complexed with the inhibitor huperzine A were investigated by various neutron scattering techniques and molecular dynamics simulations. Previous results on elastic neutron scattering at various timescales and simulations suggest that dynamical processes are not affected on average by the presence of the ligand within the considered time ranges between 10 ps and 1 ns. In the work presented here, the focus was laid on quasi-elastic (QENS) and inelastic neutron scattering (INS). These techniques give access to different kinds of individual diffusive motions and to the density of states of collective motions at the sub-picoseconds timescale. Hence, they permit going beyond the first approach of looking at mean square displacements. For both samples, the autocorrelation function was well described by a stretched-exponential function indicating a linkage between the timescales of fast and slow functional relaxation dynamics. The findings of the QENS and INS investigation are discussed in relation to the results of our earlier elastic incoherent neutron scattering and molecular dynamics simulations.

scholarly journals Solid wetting-layers in inorganic nano-reactors: the water in imogolite nanotube case

2020 ◽  
Vol 2 (5) ◽  
pp. 1869-1877 ◽  
Author(s):  
Geoffrey Monet ◽  
Erwan Paineau ◽  
Ziwei Chai ◽  
Mohamed S. Amara ◽  
Andrea Orecchini ◽  
...  
Keyword(s):  
Molecular Dynamics ◽  
Density Functional Theory ◽  
Neutron Scattering ◽  
Density Functional ◽  
Inelastic Neutron Scattering ◽  
Inelastic Neutron ◽  
Original Structure ◽  
Functional Theory ◽  
Inner Surface ◽  
Wetting Layers

The discovery of an original structure of the water at the inner surface of inorganic aluminogermanate nanotubes and its specific dynamics are reported, based on density functional theory molecular dynamics and inelastic neutron scattering.

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