Fate of the radiation-initiated charged species in liquid alkane-carbon tetrachloride-systems. Formation of ion pairs (CCl3+|Cl-)solv by geminate ion recombination

1983 ◽  
Vol 87 (17) ◽  
pp. 3267-3272 ◽  
Author(s):  
H. U. Gremlich ◽  
R. E. Buehler
Keyword(s):  
Carbon Tetrachloride ◽  
Ion Pairs ◽  
Charged Species ◽  
Ion Recombination

Dynamics of Ion Locking in Doubly Polymerized Ionic Liquids

2020 ◽  
Author(s):  
Swati Arora ◽  
Julisa Rozon ◽  
Jennifer Laaser
Keyword(s):  
Dielectric Constant ◽  
Ionic Liquid ◽  
Ionic Liquids ◽  
Ion Pairs ◽  
Polymer Chains ◽  
Ion Motion ◽  
Charged Species ◽  
Broadband Dielectric Spectroscopy ◽  
Covalently Linked ◽  
Insight Into

<div>In this work, we investigate the dynamics of ion motion in “doubly-polymerized” ionic liquids (DPILs) in which both charged species of an ionic liquid are covalently linked to the same polymer chains. Broadband dielectric spectroscopy is used to characterize these materials over a broad frequency and temperature range, and their behavior is compared to that of conventional “singly-polymerized” ionic liquids (SPILs) in which only one of the charged species is attached to the polymer chains. Polymerization of the DPIL decreases the bulk ionic conductivity by four orders of magnitude relative to both SPILs. The timescales for local ionic rearrangement are similarly found to be approximately four orders of magnitude slower in the DPILs than in the SPILs, and the DPILs also have a lower static dielectric constant. These results suggest that copolymerization of the ionic monomers affects ion motion on both the bulk and the local scales, with ion pairs serving to form strong physical crosslinks between the polymer chains. This study provides quantitative insight into the energetics and timescales of ion motion that drive the phenomenon of “ion locking” currently under investigation for new classes of organic electronics.</div>

Effect of Added Methanol on Contact Ion Pairs in Carbon Tetrachloride

1963 ◽  
Vol 38 (4) ◽  
pp. 1034-1035 ◽  
Author(s):  
M. J. Blandamer ◽  
T. E. Gough ◽  
T. R. Griffiths ◽  
M. C. R. Symons
Keyword(s):  
Carbon Tetrachloride ◽  
Ion Pairs ◽  
Contact Ion Pairs

Dimension-controlled ion-pairing assemblies based on π-electronic charged species

2017 ◽  
Vol 53 (20) ◽  
pp. 2894-2909 ◽  
Author(s):  
Yohei Haketa ◽  
Hiromitsu Maeda
Keyword(s):  
Recent Progress ◽  
Ion Pairs ◽  
Ion Pairing ◽  
Feature Article ◽  
Charged Species ◽  
Anion Complexes

This feature article summarizes the recent progress in the study of ion-pairing assemblies based on π-electronic ion pairs, including anion complexes of π-electronic molecules.

The X-radiolysis of water vapor containing methanol. Effects of some electron and hydrogen atom scavengers

1968 ◽  
Vol 46 (12) ◽  
pp. 1957-1964 ◽  
Author(s):  
R. S. Dixon ◽  
M. G. Bailey
Keyword(s):  
Nitrous Oxide ◽  
Water Vapor ◽  
Carbon Tetrachloride ◽  
Hydrogen Atom ◽  
Sulfur Hexafluoride ◽  
Hydrogen Yield ◽  
Hydrogen Atoms ◽  
A Value ◽  
Ion Recombination ◽  
Positive Ion

The X-radiolysis of water vapor containing methanol at 125 °C and 1 atm pressure has been studied alone and in the presence of some electron and hydrogen atom scavengers. In water vapor containing methanol only, a plateau value G(H2) = 7.9 ± 0.3 is obtained at all methanol concentrations above 0.5 mole %. Addition of propylene drastically reduces this yield due to efficient scavenging of hydrogen atoms, and values for the total number of H atoms from all precursors g(H)t = 7,5 ± 0.2 and [Formula: see text] are deduced from the competition. An unscavengeable hydrogen yield g(H2) ~ 0.5 is also indicated in mixtures containing propylene. Nitrous oxide and sulfur hexafluoride are found to scavenge electrons efficiently in water vapor containing methanol and the number of hydrogen atoms arising from electron–positive ion recombination is estimated to have a value G = 2.2 ± 0.6. The number of hydrogen atoms arising from processes not involving electrons is g(H) = 5.2 ± 0.3. Carbon tetrachloride reacts efficiently with both electrons and hydrogen atoms, with k(H + CH3OH)/k(H + CCl4) = 0.085. Values of g(H) = 4.9 ± 0.5 and g(H2) = 0.8 ± 0.2 are deduced from mixtures containing carbon tetrachloride.

Dynamics of Ion Locking in Doubly Polymerized Ionic Liquids

2020 ◽  
Author(s):  
Swati Arora ◽  
Julisa Rozon ◽  
Jennifer Laaser
Keyword(s):  
Dielectric Constant ◽  
Ionic Liquid ◽  
Ionic Liquids ◽  
Ion Pairs ◽  
Polymer Chains ◽  
Ion Motion ◽  
Charged Species ◽  
Broadband Dielectric Spectroscopy ◽  
Covalently Linked ◽  
Insight Into

<div>In this work, we investigate the dynamics of ion motion in “doubly-polymerized” ionic liquids (DPILs) in which both charged species of an ionic liquid are covalently linked to the same polymer chains. Broadband dielectric spectroscopy is used to characterize these materials over a broad frequency and temperature range, and their behavior is compared to that of conventional “singly-polymerized” ionic liquids (SPILs) in which only one of the charged species is attached to the polymer chains. Polymerization of the DPIL decreases the bulk ionic conductivity by four orders of magnitude relative to both SPILs. The timescales for local ionic rearrangement are similarly found to be approximately four orders of magnitude slower in the DPILs than in the SPILs, and the DPILs also have a lower static dielectric constant. These results suggest that copolymerization of the ionic monomers affects ion motion on both the bulk and the local scales, with ion pairs serving to form strong physical crosslinks between the polymer chains. This study provides quantitative insight into the energetics and timescales of ion motion that drive the phenomenon of “ion locking” currently under investigation for new classes of organic electronics.</div>

THE EFFECT OF ADDED ELECTROLYTE ON HYDROGEN-BONDING EQUILIBRIUM IN DILUTE SOLUTIONS OF t-BUTYL ALCOHOL IN CARBON TETRACHLORIDE

1962 ◽  
Vol 40 (4) ◽  
pp. 692-700 ◽  
Author(s):  
J. B. Hyne ◽  
R. M. Levy
Keyword(s):  
Hydrogen Bonding ◽  
Carbon Tetrachloride ◽  
Spectral Range ◽  
Spectral Response ◽  
Ion Pairs ◽  
Specific Interaction ◽  
Butyl Alcohol ◽  
Ammonium Bromide ◽  
Polar Species ◽  
Infrared Spectral

The effect of added tetra-n-butyl ammonium bromide on the hydrogen-bonding equilibrium of t-butyl alcohol in 0.0 to 0.08 M solution in carbon tetrachloride has been studied by infrared investigation of the spectral range 2.5–3.5 μ. The observations have been interpreted in terms of specific interaction between the alcohol and the more polar species of the salt which are present in the complex electrolyte equilibria (for example, ions and ion pairs). It is suggested that these species function as nucleation centers for aggregates of alcohol molecules, the enhanced degree of hydrogen bonding permitted in these aggregates being reflected in the infrared spectral response.

Sign in / Sign up

Export Citation Format

Share Document