Temperature dependence of the pair interaction between hydrophobic and hydrophilic solutes: A calorimetric study

Solvation of n-butyllithium with some ethers and amines was investigated by employing thermometric titration at the initial temperature 303 K. The highest enthalpy changes appear in the reaction of n-butyllithium with dimethoxyethane and N,N,N',N'-tetramethylethylenediamine (ΔH = -48.0 and -51.3 kJ/mol respectively), the lowest are observed in the reaction with diethyl ether and anisole (ΔH = -10.2 and -4.3 kJ/mol respectively). Anomalies in the temperature dependence of these reactions were observed for tetrahydrofuran and dimethoxyethane. The respective entropy changes were calculated for some electrondonors. The replacement of one electrondonor in the complex by another was examined thermometrically.

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TEMPERATURE DEPENDENCE OF BILAYER PROPERTIES IN LIPOSOMES AND THE USE OF FLUORESCENT PROBES AS A TOOL TO ELUCIDATE THE PERMEATION MECHANISM OF HYDROPHILIC SOLUTES

Journal of the Chilean Chemical Society ◽

10.4067/s0717-97072016000300009 ◽

2016 ◽

Vol 61 (3) ◽

pp. 3052-3054 ◽

Cited By ~ 2

Author(s):

M AHUMADA ◽

C CALDERÓN ◽

A LISSIE

Keyword(s):

Temperature Dependence ◽

Fluorescent Probes ◽

Hydrophilic Solutes

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Calorimetric Study on the Temperature Dependence of the Formation of Mixed Ionic/Nonionic Micelles

Langmuir ◽

10.1021/la036321g ◽

2004 ◽

Vol 20 (22) ◽

pp. 9506-9512 ◽

Cited By ~ 8

Author(s):

Tatiana P. Golub ◽

Arie de Keizer

Keyword(s):

Temperature Dependence ◽

Calorimetric Study

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Temperature dependence of the interaction between two hydrophobic solutes: a calorimetric study

Thermochimica Acta ◽

10.1016/j.tca.2004.08.012 ◽

2005 ◽

Vol 427 (1-2) ◽

pp. 43-50 ◽

Cited By ~ 16

Author(s):

Valeriy P. Korolev ◽

Nataliya L. Smirnova ◽

Andrey V. Kustov

Keyword(s):

Temperature Dependence ◽

Calorimetric Study ◽

Hydrophobic Solutes

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Temperature Dependence of the Critical Electron Dose for Fatty Acid Monolayers

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100053188 ◽

1982 ◽

Vol 40 ◽

pp. 78-79

Author(s):

Kenneth H. Downing ◽

Robert M. Glaeser

Keyword(s):

Electron Beam ◽

Fatty Acid ◽

Inelastic Scattering ◽

Temperature Dependence ◽

Structural Damage ◽

Direct Result ◽

Second Step ◽

Strong Temperature Dependence ◽

Electron Dose ◽

Covalent Bonds

The structural damage of molecules irradiated by electrons is generally considered to occur in two steps. The direct result of inelastic scattering events is the disruption of covalent bonds. Following changes in bond structure, movement of the constituent atoms produces permanent distortions of the molecules. Since at least the second step should show a strong temperature dependence, it was to be expected that cooling a specimen should extend its lifetime in the electron beam. This result has been found in a large number of experiments, but the degree to which cooling the specimen enhances its resistance to radiation damage has been found to vary widely with specimen types.

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Temperature Dependence of Magnetic Domains and Wall Structures

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s042482010009573x ◽

1972 ◽

Vol 30 ◽

pp. 496-497

Author(s):

Sonoko Tsukahara ◽

Tadami Taoka ◽

Hisao Nishizawa

Keyword(s):

Temperature Dependence ◽

Domain Walls ◽

Magnetic Domain ◽

Iron Film ◽

Objective Lens ◽

Lorentz Microscopy ◽

Domain Structures ◽

Wall Structures ◽

Crystal Films ◽

Metallurgical Structure

The high voltage Lorentz microscopy was successfully used to observe changes with temperature; of domain structures and metallurgical structures in an iron film set on the hot stage combined with a goniometer. The microscope used was the JEM-1000 EM which was operated with the objective lens current cut off to eliminate the magnetic field in the specimen position. Single crystal films with an (001) plane were prepared by the epitaxial growth of evaporated iron on a cleaved (001) plane of a rocksalt substrate. They had a uniform thickness from 1000 to 7000 Å.The figure shows the temperature dependence of magnetic domain structure with its corresponding deflection pattern and metallurgical structure observed in a 4500 Å iron film. In general, with increase of temperature, the straight domain walls decrease in their width (at 400°C), curve in an iregular shape (600°C) and then vanish (790°C). The ripple structures with cross-tie walls are observed below the Curie temperature.

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