Tag: M.W=100-150

Bebon, Rick published the artcileElectrostatic pair-interaction of nearby metal or metal-coated colloids at fluid interfaces, Application of n-Octanol, the main research area is electrostatic pair potential colloid.

In this paper, we theor. study the electrostatic interaction between a pair of identical colloids with constant surface potentials sitting in close vicinity next to each other at the fluid interface. By employing a simplified yet reasonable model system, the problem is solved within the framework of classical d. functional theory and linearized as well as nonlinear Poisson-Boltzmann (PB) theory. Apart from providing a sound theor. framework generally applicable to any such problem, our novel findings, all of which contradict common beliefs, include the following: first, quant. and qual. differences between the interactions obtained within the linear and the nonlinear PB theories; second, the importance of the electrostatic interaction between the omnipresent three-phase contact lines in interfacial systems; and, third, the occurrence of an attractive electrostatic interaction between a pair of identical metal colloids. The unusual attraction we report largely stems from an attractive line interaction, which although scales linearly with the size of the particle can compete with the surface interactions and can be strong enough to alter the nature of the total electrostatic interaction. Our results should find applications in metal or metal-coated particle-stabilized emulsions where densely packed particle arrays are not only frequently observed but also sometimes required. (c) 2020 American Institute of Physics.

Journal of Chemical Physics published new progress about Colloids. 111-87-5 belongs to class alcohols-buliding-blocks, name is n-Octanol, and the molecular formula is C8H18O, Application of n-Octanol.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Sharapova, Angelica published the artcileSolubility and vapor pressure data of bioactive 6-(acetylamino)-N-(5-ethyl-1,3,4-thiadiazol-2-yl) hexanamide, Application of n-Octanol, the main research area is bioactive compound solubility elec conductivity.

This paper presents new exptl. data on some key physicochem. properties of original bioactive 6-(acetylamino)-N-(5-ethyl-1,3,4-thiadiazol-2-yl) hexanamide (AETH). Thermal anal. of the compound under study has been carried out using differential scanning calorimetry and thermogravimetric techniques. AETH solubility data in five pharmaceutically relevant solvents in the temperature range from 288.15 to 318.15 K have been obtained by the classic saturation shake-flask method. The bioactive compound has poor solubility in hexane and buffer solutions, while it is slightly soluble in selected alcs. The exptl. solubility results have been correlated by means of modified Apelblat and van’t Hoff equations. The selected thermodn. models produced acceptable results. The Hansen solubility parameters and their components for AETH and solvents have been evaluated by using the van Krevelen-Hoftyzer at. group contribution method. The ideal solubility and the solution activity coefficient at equilibrium in the selected solvents have been quantified based on exptl. values of melting enthalpy and temperature All the investigated solutions exhibit a pos. deviation from ideality with the maximal solubility in alcs. The equilibrium vapor pressure of the compound studied has been determined as a function of temperature in the range of 433.15-454.15 K by the transpiration method. The standard thermodn. parameters of AETH sublimation have been calculated

Journal of Chemical Thermodynamics published new progress about Crystals. 111-87-5 belongs to class alcohols-buliding-blocks, name is n-Octanol, and the molecular formula is C8H18O, Application of n-Octanol.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Perez, Hugo A. published the artcileEffect of cholesterol on the surface polarity and hydration of lipid interphases as measured by Laurdan fluorescence: New insights, Product Details of C8H18O, the main research area is cholesterol dipalmitoylphosphatidylcholine Laurdan fluorescence spectroscopy; Cholesterol; Laurdan fluorescence; Lipid membranes; Organic solvents.

Comparison of the behavior of Laurdan in gel and in the liquidcrystalline DPPC bilayers with that observedin chloroform and OctOH allow concluding that changes in the membrane lipid order cannot be ascribed to changes in viscosity of the local environment. Cholesterol acts as a spacer below the transition temperatureof DPPC, promoting a disorder state in the acyl chain region. No evidence of water entrance has been detected with Laurdan up to 30% Cholesterol in DPPC in this condition. In contrast, Chol displaces to longer values the wavelength of Laurdan in membranes in the liquidcrystallinestate. This decrease in polarity occurs above 5% Chol and is directly related to the water extrusion produced by Chol. This effect is similar to that occurring in liquid crystalline membranes subjected to hypertonic stress. The behavior is comparable to that of Laurdan in OctOH at different water ratios below 5% Chol/DPPC. At higher ratios, other changes are evident.

Colloids and Surfaces, B: Biointerfaces published new progress about Crystals. 111-87-5 belongs to class alcohols-buliding-blocks, name is n-Octanol, and the molecular formula is C8H18O, Product Details of C8H18O.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Kahr, Bart published the artcileTailor-Made Auxiliaries for Polar Growth from Melts, Computed Properties of 97-67-6, the main research area is review Tailor made auxiliary polar growth melt.

Tailor-made auxiliaries are generally less stereochem. discriminating of crystals grown from the melt than crystals grown from solution However, it is possible to make supramol. inferences using well-chosen additives in the manner taught to us by Lahav and Leiserowitz. Spherulites manifesting needle-like growth and small angle branching grow frequently from supercooled melts under high crystallization driving forces, along one principal crystallog. direction. If this direction is polar, it is important to establish its absolute sense as a basis for understanding growth at the interface between crystals and melt. This assignment, for polycrystalline ensembles, is beyond the capabilities of X-ray crystallog. Two examples of this discrimination are described with tailor-made additives, one for the β form of resorcinol and another for form I of L-malic acid. Assigning the absolute sense of a polar axis with mol. additives is a problem that resembles both the science and style of previous experiments from the Weizmann Institute.

Israel Journal of Chemistry published new progress about Crystals. 97-67-6 belongs to class alcohols-buliding-blocks, name is (S)-2-hydroxysuccinic acid, and the molecular formula is C4H6O5, Computed Properties of 97-67-6.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Doeller, Sonja C. published the artcileA case study on the influence of hydrophilicity on the signal enhancement by dynamic nuclear polarization, Product Details of C8H18O, the main research area is hydrophilicity dynamic nuclear polarization; DNP NMR; Dynamics; Low temperature NMR; Octanol; Solid state NMR; Surfactants.

In this work, the behavior of four different com. available polarizing agents is investigated employing the non-ionic model surfactant 1-octanol as analyte. A relative method for the comparison of the proportion of the direct and indirect polarization transfer pathways is established, allowing a direct comparison of the polarization efficacy for different radicals and different parts of the 1-octanol mol. despite differences in radical concentration or sample amount With this approach, it could be demonstrated that the hydrophilicity is a key factor in the way polarization is transferred from the polarizing agent to the analyte. These findings are confirmed by the determination of buildup times Tb, illustrating that the choice of polarizing agent plays an essential role in ensuring an optimal polarization transfer and therefore the maximum amount of enhancement possible for DNP enhanced NMR measurements.

Solid State Nuclear Magnetic Resonance published new progress about Dynamics. 111-87-5 belongs to class alcohols-buliding-blocks, name is n-Octanol, and the molecular formula is C8H18O, Product Details of C8H18O.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Sasaki, Norihiko published the artcileControl over the Aspect Ratio of Supramolecular Nanosheets by Molecular Design, Computed Properties of 111-87-5, the main research area is nanosheet supramol structure self assembly; molecular design; nanostructures; porphyrins; self-assembly; supramolecular polymers.

Recent developments in kinetically controlled supramol. polymerization permit control of the size (i.e., length and area) of self-assembled nanostructures. However, control of mol. self-assembly at a level comparable with organic synthetic chem. and the achievement of structural complexity at a hierarchy larger than the mol. level remain challenging. This study focuses on controlling the aspect ratio of supramol. nanosheets. A systematic understanding of the relationship between the monomer structure and the self-assembly energy landscape has derived a new monomer capable of forming supramol. nanosheets. With this monomer in hand, the aspect ratio of a supramol. nanosheet is demonstrated that it can be controlled by modulating intermol. interactions in two dimensions.

Chemistry – A European Journal published new progress about Enthalpy. 111-87-5 belongs to class alcohols-buliding-blocks, name is n-Octanol, and the molecular formula is C8H18O, Computed Properties of 111-87-5.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Belhachemi, Boucif published the artcileDetermination and Correlation of Solubilities of Benzoic Acid, Salicylic Acid, Resorcinol and Hydroquinone in Water and in 1-Octanol at Temperatures from 297.25 K to 334.45 K, Quality Control of 111-87-5, the main research area is benzoic salicylic acid resorcinol hydroquinone octanol solubility.

The solubilities of benzoic acid, salicylic acid, resorcinol and hydroquinone in water and in 1-octanol were measured by the dynamic method which is also called the synthetic method from 297.25 K to 334.45 K. Using differential scanning calorimetry (DSC Q2000 and SDT Q600), the melting temperature and the enthalpy of fusion of these solutes were determined The obtained results show that the solubility of benzoic acid in water is greater than that of salicylic acid, but in the case of the two isomers of dihydroxybenzene, the solubility of resorcinol is approx. 100 times that of hydroquinone. In 1-octanol, the decreasing order of the solubility of these compounds is as follows: resorcinol > benzoic acid > salicylic acid > hydroquinone. The exptl. solubilities were correlated using two regression equations. The correlation coefficient is greater than 0.9937 for one of these two equations for the binary studied systems where the solvent is either water or 1-octanol. New exptl. data are provided for the solubility of resorcinol in water and salicylic acid, resorcinol, hydroquinone in 1-octanol.

International Journal of Thermophysics published new progress about Enthalpy. 111-87-5 belongs to class alcohols-buliding-blocks, name is n-Octanol, and the molecular formula is C8H18O, Quality Control of 111-87-5.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Marchant, Erik D. published the artcileLocalized Heat Therapy Improves Mitochondrial Respiratory Capacity but Not Fatty Acid Oxidation, Quality Control of 97-67-6, the main research area is skeletal muscle heat therapy mitochondrial respiration fatty acid oxidation; exercise; heat stress; high-intensity interval training; mitochondria; skeletal muscle.

Mild heat stress can improve mitochondrial respiratory capacity in skeletal muscle. However, long-term heat interventions are scarce, and the effects of heat therapy need to be understood in the context of the adaptations which follow the more complex combination of stimuli from exercise training. The purpose of this work was to compare the effects of 6 wk of localized heat therapy on human skeletal muscle mitochondria to single-leg interval training. Thirty-five subjects were assigned to receive sham therapy, short-wave diathermy heat therapy, or single-leg interval exercise training, localized to the quadriceps muscles of the right leg. All interventions took place 3 times per wk. Muscle biopsies were performed at baseline, and after 3 and 6 wk of intervention. Mitochondrial respiratory capacity was assessed on permeabilized muscle fibers via high-resolution respirometry. The primary finding of this work was that heat therapy and exercise training significantly improved mitochondrial respiratory capacity by 24.8 ± 6.2% and 27.9 ± 8.7%, resp. (p < 0.05). Fatty acid oxidation and citrate synthase activity were also increased following exercise training by 29.5 ± 6.8% and 19.0 ± 7.4%, resp. (p < 0.05). However, contrary to our hypothesis, heat therapy did not increase fatty acid oxidation or citrate synthase activity. Six weeks of muscle-localized heat therapy significantly improves mitochondrial respiratory capacity, comparable to exercise training. However, unlike exercise, heat does not improve fatty acid oxidation capacity. International Journal of Molecular Sciences published new progress about Exercise. 97-67-6 belongs to class alcohols-buliding-blocks, name is (S)-2-hydroxysuccinic acid, and the molecular formula is C4H6O5, Quality Control of 97-67-6.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Capolla, Nadia published the artcileMethylene blue sensitized gelatin used for the fabrication of holographic optical elements in the near-infrared, Recommanded Product: N2-(2-Hydroxyethyl)-N1,N1,N2-trimethyl-1,2-ethylenediamine, the main research area is methylene blue gelatin holog optical element.

In this paper a short review on interconnecting devices using holog. techniques was briefly presented and two particular applications of HOEs designed for the IR wavelength region were discussed. It was then explained why it could be worthwhile to use a recording material sensitive to red wavelengths instead of blue or green wavelengths. Therefore a methylene blue-sensitized gelatin/electron donor system was presented and it was demonstrated that it can record efficient transmission and reflection gratings with a relatively low exposure energy at 633 or 647 nm. An application also shown the qualities of this new recording material, which is believed to be very promising for the fabrication of near-IR holog. components.

Proceedings of SPIE-The International Society for Optical Engineering published new progress about Gelatins. 2212-32-0 belongs to class alcohols-buliding-blocks, name is N2-(2-Hydroxyethyl)-N1,N1,N2-trimethyl-1,2-ethylenediamine, and the molecular formula is C7H18N2O, Recommanded Product: N2-(2-Hydroxyethyl)-N1,N1,N2-trimethyl-1,2-ethylenediamine.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Ye, Wenjun published the artcileDesign, synthesis and biological evaluation of novel triazoloquinazolinone and imidazoquinazolinone derivatives as allosteric inhibitors of SHP2 phosphatase, Synthetic Route of 22483-09-6, the main research area is melanoma SHP2 phosphatase triazoloquinazolinone imidazoquinazolinone; SHP2; allosteric inhibitors; antitumor activity; synthesis.

A series of novel triazoloquinolinone and imidazoquinazolinone derivatives were designed and synthesized, and their biol. activities against SHP2 protein and melanoma A357 cell line were evaluated in vitro. The results show that some target compounds have moderate to excellent inhibitory activity on SHP2 protein and melanoma A357 cell line. Structure-activity relationships (SARs) showed that both imidazoquinazolinone and triazoloquinazolinone derivatives have good SHP2 protein kinase and melanoma cell line A357 inhibitory activity. The results of mol. docking also showed that the cores of imidazoquinazolinone and triazoloquinazolinone have a certain affinity for SHP2 protein at the same time. Compared with SHP244, the target compounds have quite good liver microsomal stability and has more drug potential. The most promising compound has a strong inhibitory effect on the melanoma cell line A357 at 100 μM (76.15% inhibition).

Journal of Enzyme Inhibition and Medicinal Chemistry published new progress about Melanoma. 22483-09-6 belongs to class alcohols-buliding-blocks, name is 2,2-Dimethoxyethanamine, and the molecular formula is C4H11NO2, Synthetic Route of 22483-09-6.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts