Results 201 to 210 of about 26,663 (244)
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Cobalt ion pair macroscopic recognition by orthogonal interaction
Sensors and Actuators B: Chemical, 2016Abstract A simple calix[4]arene dialkyne diester(C4DE) was designed and synthesized in high yield (80%). C4DE was clicked onto a microstructured Au surface, and showed selective macroscopic recognition of cobalt picrate by orthogonal interactions, detected via contact angle measurements.
Jian Cheng +4 more
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Homogeneous interaction of ion-pair states of ClF
Optics and Spectroscopy, 2003The energies, rotational constants, and isotope shifts of vibrational levels of the homogeneously perturbed ion-pair states E, f, β, and Gof the ClF molecule are calculated by the methods of diabatic and adiabatic potentials. The spectroscopic constants of initial diabatic potentials and the parameters of interaction for which the best agreement ...
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Theory of ion pairs coupled by exchange interaction
Journal of Physics and Chemistry of Solids, 1966Abstract The theory of the properties and magnetic behaviour of a system of two coupled spins is given. The coupling is of the most general linear exchange type, including asymmetric and anisotropic contributions. The system shows many properties of a weak ferromagnet when the interaction is predominantly antiferromagnetic.
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Spectroscopic studies of the ion-pair interactions of antimony(III)
Spectrochimica Acta Part A: Molecular Spectroscopy, 1981Abstract Various types of ion-pairs of different systems involving tetra-n-butylammonium iodide (D) with antimony trichloride (A) in dilute solutions in acetonitrile, methylene chloride and chloroform have been investigated spectrophotometrically in the region 550—25O mn.
Abdel-Ghany El-Kourashy +2 more
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Counterion Specificity of Polyelectrolyte Brushes: Role of Specific Ion‐Pairing Interactions
ChemPhysChem, 2018AbstractWe demonstrate here that the properties of poly (2‐(methacryloyloxy) ethyl trimethylammonium chloride) brushes can be tuned by counterion species. When the brushes are exposed to external chloride (Cl−) counterions, obvious dehydration and collapse are only observed at high salt concentrations.
Ran Kou +3 more
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Aqueous divalent metal–nitrate interactions: hydration versus ion pairing
Physical Chemistry Chemical Physics, 2008Nitrate aqueous solutions, Mg(NO(3))(2), Ca(NO(3))(2), Sr(NO(3))(2), and Pb(NO(3))(2), are investigated using Raman spectroscopy and free energy profiles from molecular dynamics (MD) simulations. Analysis of the in-plane deformation, symmetric stretch, and asymmetric stretch vibrational modes of the nitrate ions reveal perturbation caused by the metal ...
Man, Xu +4 more
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Energy Levels of Strongly Interacting Ion Pairs
1978The basic interactions for ion pairs are reviewed and summarized. The most important coupling mechanisms for two electron — two center and for N — electron two-center systems are treated first. In particular, a detailed study of the direct exchange will be used to define and discuss the general form of the exchange hamiltonian and to define the ...
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Exchange Interaction of Mn+2 Ion Pairs in CsCdCl3
1979The interaction in the pairs of Mn+2 ions in CsCdCl was investigated. Values of exchange constants for nearest and next to the nearest neighbours were found, the character of interaction was determined.Dipole-dipole constants and crystalline field parameters were found also.
G. A. Petrakovskii +3 more
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Superhydrophobic to Superhydrophilic Wetting Transition with Programmable Ion‐Pairing Interaction
Advanced Materials, 2008Intelligent surfaces with dynamically tunable wettability in response to various external stimuli have recently received special attention due to their potential applications, which range from self-cleaners to microfluidics and biosensors. Ion exchange is a reversible process in which ions are exchanged between cationic or anionic electrolytes and ...
Lim, HS +5 more
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Optical Expressions of Ion-Pair Interactions in Minerals
1985Clusters of transition element cations in neighboring sites frequently govern the optical properties of minerals. This is particularly true of Fe-bearing minerals which may exhibit several types of ion-pair transitions. In this thesis four different types of interactions were distinguished: intensified spin-forbidden transitions of Fe3+ clusters ...
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