Solvent Structure, Dynamics, and Ion Mobility in Aqueous Solutions at 25 °C

1998 ◽  
Vol 102 (21) ◽  
pp. 4193-4204 ◽  
Author(s):  
S. Koneshan ◽  
Jayendran C. Rasaiah ◽  
R. M. Lynden-Bell ◽  
S. H. Lee
Keyword(s):  
Aqueous Solutions ◽  
Ion Mobility ◽  
Solvent Structure ◽  
Structure Dynamics

Voronoi polyhedra and solvent structure for aqueous solutions (III)

1982 ◽  
Vol 77 (12) ◽  
pp. 6251-6254 ◽  
Author(s):  
Elaine Eisler David ◽  
Carl W. David
Keyword(s):  
Aqueous Solutions ◽  
Solvent Structure ◽  
Voronoi Polyhedra

scholarly journals Multiphoton Ionization of Nitrobenzene in Non-Aqueous Solutions: Characterization of the Cation and Ion-Molecule Chemistry

1991 ◽  
Vol 11 (2) ◽  
pp. 83-93 ◽  
Author(s):  
G. Siuzdak ◽  
J. J. Belbruno
Keyword(s):  
Aqueous Solutions ◽  
Absorption Spectroscopy ◽  
Ion Mobility ◽  
Transient Absorption ◽  
Multiphoton Ionization ◽  
Transient Absorption Spectroscopy ◽  
Quantum Yields ◽  
Nanosecond Pulses ◽  
Solvent Molecules

The phenoxy cation has been generated in polar and nonpolar solutions by multiphoton ionization of nitrobenzene using nanosecond pulses of 266 nm and 355 nm light. The ions have been characterized by pulsed conductivity (ion mobility) measurements and transient absorption spectroscopy. The involvement of the phenoxy ion in ion-molecule chemistry with either neutral solute or solvent molecules has also been observed and the photochemical products and quantum yields of the ion-molecule products are presented and compared with the neutral photochemistry results.

scholarly journals Ion mobility and clustering of sodium hydroxybenzoates in aqueous solutions: a molecular dynamics simulation study

2014 ◽  
Vol 16 (36) ◽  
pp. 19314-19326 ◽  
Author(s):  
Jure Gujt ◽  
Črtomir Podlipnik ◽  
Marija Bešter-Rogač ◽  
Eckhard Spohr
Keyword(s):  
Molecular Dynamics ◽  
Molecular Dynamics Simulation ◽  
Aqueous Solutions ◽  
Simulation Study ◽  
Ion Mobility ◽  
Cluster Formation ◽  
Dynamics Simulation ◽  
High Concentrations

At sufficiently high concentrations hydroxybenzoate anions in aqueous solutions form clusters of various sizes and shapes. Different degrees of cluster formation for each isomer lead to differences in their mobility.

Ultrathin frozen sections of yeast without aldehyde prefixation

1978 ◽  
Vol 36 (2) ◽  
pp. 58-59
Author(s):  
K. J. Böhm ◽  
a. E. Unger
Keyword(s):  
Aqueous Solutions ◽  
Biological Material ◽  
Yeast Cells ◽  
Frozen Sections ◽  
Good Preservation ◽  
Ultrathin Frozen Sections

During the last years it was shown that also by means of cryo-ultra-microtomy a good preservation of substructural details of biological material was possible. However the specimen generally was prefixed in these cases with aldehydes.Preparing ultrathin frozen sections of chemically non-prefixed material commonly was linked up to considerable technical and manual expense and the results were not always satisfying. Furthermore, it seems to be impossible to carry out cytochemical investigations by means of treating sections of unfixed biological material with aqueous solutions.We therefore tried to overcome these difficulties by preparing yeast cells (S. cerevisiae) in the following manner:

Imaging polymers, proteins and dna in aqueous solutions with the atomic force microscope

1989 ◽  
Vol 47 ◽  
pp. 32-33
Author(s):  
S.A.C. Gould ◽  
B. Drake ◽  
C.B. Prater ◽  
A.L. Weisenhorn ◽  
S.M. Lindsay ◽  
...  
Keyword(s):  
Amino Acids ◽  
Dna Sequencing ◽  
Aqueous Solutions ◽  
Atomic Force Microscope ◽  
Piezoelectric Crystal ◽  
Atomic Force ◽  
Structure Of Molecules ◽  
Optical Lever

The atomic force microscope (AFM) is an instrument that can be used to image many samples of interest in biology and medicine. Images of polymerized amino acids, polyalanine and polyphenylalanine demonstrate the potential of the AFM for revealing the structure of molecules. Images of the protein fibrinogen which agree with TEM images demonstrate that the AFM can provide topographical data on larger molecules. Finally, images of DNA suggest the AFM may soon provide an easier and faster technique for DNA sequencing.The AFM consists of a microfabricated SiO2 triangular shaped cantilever with a diamond tip affixed at the elbow to act as a probe. The sample is mounted on a electronically driven piezoelectric crystal. It is then placed in contact with the tip and scanned. The topography of the surface causes minute deflections in the 100 μm long cantilever which are detected using an optical lever.

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