Benzonitrile as a Probe of Local Environment in Ionic Liquids

2013 ◽  
Vol 117 (9) ◽  
pp. 2764-2772 ◽  
Author(s):  
Shiguo Zhang ◽  
Yan Zhang ◽  
Xiangyuan Ma ◽  
Liujin Lu ◽  
Yude He ◽  
...  
Keyword(s):  
Ionic Liquids ◽  
Local Environment

Local environment structure and dynamics of CO2 in the 1-ethyl-3-methylimidazolium bis(trifluoromethanesulfonyl)imide and related ionic liquids

2017 ◽  
Vol 146 (10) ◽  
pp. 104502 ◽  
Author(s):  
Tuanan C. Lourenço ◽  
Santiago Aparicio ◽  
Gabriela C. Costa ◽  
Luciano T. Costa
Keyword(s):  
Ionic Liquids ◽  
Local Environment ◽  
Structure And Dynamics

Formation of “Quasi” Contact or Solvent-separated Ion Pairs in the Local Environment of Probe Molecules Dissolved in Ionic Liquids

ChemPhysChem ◽  
2014 ◽  
Vol 15 (2) ◽  
pp. 265-270 ◽  
Author(s):  
Matthias Strauch ◽  
Christian Roth ◽  
Falk Kubatzki ◽  
Ralf Ludwig
Keyword(s):  
Ionic Liquids ◽  
Ion Pairs ◽  
Local Environment ◽  
Probe Molecules

Probing the local environment of hybrid materials designed from ionic liquids and synthetic clay by Raman spectroscopy

2014 ◽  
Vol 122 ◽  
pp. 469-475 ◽  
Author(s):  
Leonardo J.A. Siqueira ◽  
Vera R.L. Constantino ◽  
Fernanda F. Camilo ◽  
Roberto M. Torresi ◽  
Marcia L.A. Temperini ◽  
...  
Keyword(s):  
Raman Spectroscopy ◽  
Ionic Liquids ◽  
Hybrid Materials ◽  
Local Environment ◽  
Synthetic Clay

Residual Gas Reaction in the Electron Microscope: II The Design of a Gas-Control Chamber for Quantitative Observations

1969 ◽  
Vol 27 ◽  
pp. 82-83
Author(s):  
Chester J. Calbick ◽  
Richard E. Hartman
Keyword(s):  
Electron Beam ◽  
Electron Microscope ◽  
Local Environment ◽  
Chamber Pressure ◽  
Objective Lens ◽  
Ion Pump ◽  
Quantitative Studies ◽  
Precise Knowledge ◽  
Differential Pumping ◽  
And Control

Quantitative studies of the phenomenon associated with reactions induced by the electron beam between specimens and gases present in the electron microscope require precise knowledge and control of the local environment experienced by the portion of the specimen in the electron beam. Because of outgassing phenomena, the environment at the irradiated portion of the specimen is very different from that in any place where gas pressures and compositions can be measured. We have found that differential pumping of the specimen chamber by a 4" Orb-Ion pump, following roughing by a zeolite sorption pump, can produce a specimen-chamber pressure 100- to 1000-fold less than that in the region below the objective lens.

An emerging technology: Nuclear magnetic resonance microscopy

1988 ◽  
Vol 46 ◽  
pp. 1000-1001
Author(s):  
M.J. Hennessy ◽  
E. Kwok
Keyword(s):  
Nuclear Magnetic Resonance ◽  
Magnetic Resonance ◽  
Relaxation Times ◽  
Basic Research ◽  
Local Environment ◽  
Magnetic Resonance Images ◽  
Nmr Microscopy ◽  
Mri Scans ◽  
Temperature Relaxation ◽  
Nuclear Magnetic

Much progress in nuclear magnetic resonance microscope has been made in the last few years as a result of improved instrumentation and techniques being made available through basic research in magnetic resonance imaging (MRI) technologies for medicine. Nuclear magnetic resonance (NMR) was first observed in the hydrogen nucleus in water by Bloch, Purcell and Pound over 40 years ago. Today, in medicine, virtually all commercial MRI scans are made of water bound in tissue. This is also true for NMR microscopy, which has focussed mainly on biological applications. The reason water is the favored molecule for NMR is because water is,the most abundant molecule in biology. It is also the most NMR sensitive having the largest nuclear magnetic moment and having reasonable room temperature relaxation times (from 10 ms to 3 sec). The contrast seen in magnetic resonance images is due mostly to distribution of water relaxation times in sample which are extremely sensitive to the local environment.

Electron energy-loss near-edge structure in silicate minerals

1992 ◽  
Vol 50 (2) ◽  
pp. 1258-1259
Author(s):  
D W McComb ◽  
R S Payne ◽  
P L Hansen ◽  
R Brydson
Keyword(s):  
Solid State ◽  
Energy Loss ◽  
Electron Energy ◽  
State Energy ◽  
Local Environment ◽  
Edge Structure ◽  
Silicate Minerals ◽  
Two Samples ◽  
Electron Energy Loss ◽  
Careful Processing

Electron energy-loss near-edge structure (ELNES) is an effective probe of the local geometrical and electronic environment around particular atomic species in the solid state. Energy-loss spectra from several silicate minerals were mostly acquired using a VG HB501 STEM fitted with a parallel detector. Typically a collection angle of ≈8mrad was used, and an energy resolution of ≈0.5eV was achieved.Other authors have indicated that the ELNES of the Si L2,3-edge in α-quartz is dominated by the local environment of the silicon atom i.e. the SiO4 tetrahedron. On this basis, and from results on other minerals, the concept of a coordination fingerprint for certain atoms in minerals has been proposed. The concept is useful in some cases, illustrated here using results from a study of the Al2SiO5 polymorphs (Fig.l). The Al L2,3-edge of kyanite, which contains only 6-coordinate Al, is easily distinguished from andalusite (5- & 6-coordinate Al) and sillimanite (4- & 6-coordinate Al). At the Al K-edge even the latter two samples exhibit differences; with careful processing, the fingerprint for 4-, 5- and 6-coordinate aluminium may be obtained.

Investigation of Various Ionic Liquids and Catalyst Materials for Lithium-Oxygen Batteries

2011 ◽  
pp. 110923034559006
Author(s):  
Arnd Garsuch ◽  
D. Michael Badine ◽  
Klaus Leitner ◽  
Luiz H. S. Gasparotto ◽  
Natalia Borisenko ◽  
...  
Keyword(s):  
Ionic Liquids ◽  
Lithium Oxygen Batteries
Sign in / Sign up

Export Citation Format

Share Document