scholarly journals Lithium cation enhances anion binding in a tripodal phosphine oxide-based ditopic receptor

2011 ◽  
Vol 47 (27) ◽  
pp. 7653 ◽  
Author(s):  
Jesse V. Gavette ◽  
Juven Lara ◽  
Orion B. Berryman ◽  
Lev N. Zakharov ◽  
Michael M. Haley ◽  
...  
Keyword(s):  
Phosphine Oxide ◽  
Anion Binding ◽  
Lithium Cation ◽  
Ditopic Receptor

A Novel Ditopic Receptor and Reversal of Anion Binding Selectivity in the Presence and Absence of Bound Cation

2003 ◽  
Vol 5 (26) ◽  
pp. 4971-4974 ◽  
Author(s):  
Gamolwan Tumcharern ◽  
Thawatchai Tuntulani ◽  
Simon J. Coles ◽  
Michael B. Hursthouse ◽  
Jeremy D. Kilburn
Keyword(s):  
Anion Binding ◽  
Binding Selectivity ◽  
Ditopic Receptor ◽  
Presence And Absence

Ion pair complexes and anion binding in the solution of a ditopic receptor

2016 ◽  
Vol 45 (15) ◽  
pp. 6481-6490 ◽  
Author(s):  
T. Mäkelä ◽  
K. Rissanen
Keyword(s):  
Solid State ◽  
Alkali Halides ◽  
Ion Pair ◽  
Anion Binding ◽  
Solution Study ◽  
Ditopic Receptor

A comprehensive solid-state and solution study of a ditopic benzo-15-crown-5 bis-urea receptor L toward alkali halides has been presented.

The Ability of Thrombin Inhibitors to Reduce the Thrombin Activity Generated in Plasma on Extrinsic and Intrinsic Activation

1997 ◽  
Vol 77 (03) ◽  
pp. 498-503 ◽  
Author(s):  
D Prasa ◽  
L Svendsen ◽  
J Stürzebecher
Keyword(s):  
Active Site ◽  
Thrombin Generation ◽  
Anion Binding ◽  
Thrombin Inhibitors ◽  
Coagulation System ◽  
Thrombin Activity ◽  
Continuous Registration ◽  
High Concentrations ◽  
20 Nm ◽  
Generation Test

SummaryIn a thrombin generation test with continuous registration of thrombin activity in plasma we studied the ability of a variety of thrombin inhibitors of different type and mechanism of action to influence the activity of thrombin after activation of the coagulation system. Depending on the inhibitor, the peak of thrombin activity is delayed and/or reduced.By blocking the active site of generated thrombin inhibitors cause a concentration dependent reduction of the thrombin peak and inhibit feed-back reactions of thrombin resulting in a delay of thrombin generation. Highly potent synthetic active-site directed inhibitors (Ki ≤ 20 nM) reduce the thrombin activity formed in plasma after extrinsic or intrinsic activation with the same efficiency (IC50 0.1 - 0.6 μM) as hirudin. The delay and reduction of thrombin generation by inhibitors of the anion-binding exosite 1 of thrombin is only attributed to an inhibition of feed-back reactions of thrombin. For a 50% reduction of thrombin activity in plasma by this type of inhibitors relatively high concentrations were determined.

Cambiarenes: Single-Step Synthesis and Anion Binding of a Clip- Shaped Macrocycle with a Redox-Active Core

2019 ◽  
Author(s):  
Riley J. Petersen ◽  
Brett J. Rozeboom ◽  
Shalisa Oburn ◽  
Nolan Blythe ◽  
Tanner Rathje ◽  
...  
Keyword(s):  
Electron Density ◽  
Single Step ◽  
Anion Binding ◽  
Host Molecule ◽  
Selective Binding ◽  
The Core ◽  
Redox Active ◽  
Active Core ◽  
Guest Binding

<div>We report the synthesis of a novel macrocyclic host molecule that forms in a single step from commercially available starting materials. The core of the macrocycle backbone possesses two quinone rings and, thus, is redox-active. Host-guest binding involving the clip-shaped cavity indicates selective binding of pyridine <i>N</i>-oxides based of the electron density of and steric bulk of the anionic oxygen.</div>

Characterization of New Ionically Conducting Peo-Based Networks by Diffusion, Elasticity Modulus and Ionic Conductivity Measurements

1992 ◽  
Vol 293 ◽  
Author(s):  
Herve Cheradame ◽  
F. Desbat ◽  
P. Mercier-Niddam ◽  
S. Boileau
Keyword(s):  
Diffusion Coefficient ◽  
Ionic Conductivity ◽  
Elasticity Modulus ◽  
Sol Gel ◽  
Cation Transport ◽  
Lithium Cation ◽  
Conductivity Measurements ◽  
Conducting Materials ◽  
Diffusion Studies

AbstractIonically conducting materials containing PEO were prepared from telechelic di(methyl-diethoxy-silane) PEO, synthesized by the hydrosilylation of telechelic diallyl-PEO with methyldiethoxysilane. The network is obtained by the usual sol-gel chemistry. Then, it is filled with LiClO4 by diffusion of the salt and further drying. A comparison is made with the same kind of materials crosslinked using urethane chemistry. Diffusion studies show that the diffusion coefficient of solvent is similar for both types of materials, whilst the ionic conductivity is higher for the networks crosslinked with siloxane bonds. An experiment of diffusion of LiClO4 without solvent showed that this salt has a diffusion coefficient of the order of 2.10-8 cm2.sec-1 at 34°C. The conductivity calculated from this determination is compatible with the mechanism of lithium cation transport by the diffusion of salt molecules. Elasticity modulus measurements show that the salt aggregates are essentially located within the crosslinks at low concentration, but also in the PEO chains for salt concentrations higher than 1 mol/l.

scholarly journals Effects of anion binding on the deprotonation reactions of halorhodopsin.

1986 ◽  
Vol 261 (6) ◽  
pp. 2690-2696 ◽  
Author(s):  
B Schobert ◽  
J K Lanyi ◽  
D Oesterhelt
Keyword(s):  
Anion Binding

Pyrrole-bridged quinones: π-electronic systems that modulate electronic structures by tautomerism and deprotonation

2021 ◽  
Author(s):  
Shinya Sugiura ◽  
Hiromitsu Maeda
Keyword(s):  
Infrared Absorption ◽  
Electronic Structures ◽  
Near Infrared ◽  
Ion Pairing ◽  
Anion Binding ◽  
Electronic Systems

A new series of π-extended quinone derivatives containing a pyrrole bridge exhibited NH/OH-type tautomerization and anion binding along with deprotonation that induced near-infrared absorption and ion-pairing assemblies.

scholarly journals Anion binding in metal-organic frameworks

2021 ◽  
pp. 213708
Author(s):  
Xin Wu ◽  
Lauren K. Macreadie ◽  
Philip A. Gale
Keyword(s):  
Metal Organic Frameworks ◽  
Anion Binding ◽  
Metal Organic
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