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Showing 1 to 20 of 22 for “"Diphenylamine"”.
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A study of the binary systems salicylic acid-biphenyl and salicylic acid-diphenylamine
… for the biphenyl. 2. The system salicylic acid-diphenylamine was studied and no compound formation was found to be present. The system and no compound formation was found to be present. The system is not as ideal as the salicylic acid-biphenyl system, but follows the ideal solution curve fairly …
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A Comparison of the Absorption Spectra of Diphenylamine and Carbazole and Several of their Derivatives
University of Minnesota Masters thesis. May 1921. Major: Chemistry. Advisor: Dr. Hunter, Dr. Tate. 1 computer file (PDF); 41 pages.
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Chromatographic and mass spectrometric characterization of a landfill leachate and an industrial wastewater
… of 2,4-dinitrotoluene, 2,4,6-trinitrotoluene, diphenylamine, and dibutyl phthalate. GC/MS analysis also confirmed the presence of 4-nitro-2-aminotoluene. Tentative identification of methylnitrobenzene, dinitrobenzene, aminonitrobenzaldehyde, and a dinitrotoluene isomer was made by GC/MS while …
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Correlation and prediction of solubility of low vapor pressure solids in supercritical fluids
… in both ethylene and carbon dioxide, and diphenylamine in carbon dioxide. The binary attraction parameter (or"unlike pair energy parameter") of the Peng-Robinson equation was correlated with the heat of vaporization of the solid. The binary interaction parameter of Plocker, Knapp and …
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Design, Synthesis and Evaluation of Diphenylamines as MEK5 Inhibitors
… A novel series of compounds utilizing the diphenylamine scaffold was designed and synthesized based on a homology model of MEK5 using the X-ray crystal structure of MEK1 (PDB ID: 3EQC) as a template. The compounds were tested for their MEK12, and MEK5 inhibition in a cell based assay.
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Design and Synthesis of CDK-5 and MEK-5 Inhibitors and Synthesis towards Tubulysin Analogs
… from the following classes--benzimidazole, diphenylamine, flavones, and ortho-carboxyamide were examined for their capacity to be developed into potent and selective MEK-5 inhibitors. </p><p>Tubulysin is a natural product that disrupts microtubule dynamics, blocks mitosis, and induces cell …
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Physiology and control of apple scald
… treated postharvest with an aqueous solution of diphenylamine (DPA) + 1,2, dihydro -6- ethoxy -2,2,4-trimethylquinoline (ethoxyquin) and stored in CA exhibited lower soft scald incidence and higher firmness than comparable fruits stored at O°C in air storage. Fruit firmness and titratable acids …
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A study of the function of carotenoid pigments of a red psychrophilic micrococcus from Antarctica
… which had carotenogenesis suppressed by diphenylamine indicated maxima only in the ultraviolet range (390 nm and below). Comparative sensitivities of red and white cells to ultraviolet radiation were determined with cultures which had been harvested in both log and stationary phases. In …
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LASER-RAMAN ΦΑΣΜΑΤΑ ΟΥΣΙΩΝ ΕΝ ΠΡΟΣΡΟΦΗΣΕΙ
… OF ITS DERIVATIVES), TRIPHENYLAMINE, ANTHRACENE, DIPHENYLAMINE AND THE BINARY MIXTURES: C6H6-CLL4 AND C6H6-CHCL3. RAMAN SHIFTS OF THE ADSORBED MOLECULES WERE OBSERVED AND COMPARED WITH THE PURE SUBSTANCES. CHANGES OF THE RELATIVE INTENSITES AND APPEARENCE OF NEW BANDS WERE ALSO OBSERVED IN …
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Applications of supercritical fluids to the extraction and analysis of oligomers and polymer additives
… (NC). The primary stabilizer additive (diphenylamine) and its nitrated derivatives were extracted from the propellant. The SF extracted stabilizer profile was characterized using liquid chromatography (LC), gas chromatography (GC) and SFC. SFC was shown to provide separations of …
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Design, Synthesis, & Biological Evaluation of Novel Het-Aromatic/Aromatic Analogs for the Treatment of HIV, Cancer, & Cognitive Dysfunctions
… approaches, it was utilized for the design of diphenylamine and 2-amino-3-carboxythiophene derivatives as selective MEK5 inhibitors. During the development of 2-amino-3-carboxythiophene derivatives as MEK5 inhibitors, Ullmann couplings reactions were optimized for the installation of aryl ring …
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The Detection and Identification of Explosives by Canines and Chemical Instrumentation
… study were nitroglycerin, 2,4- dinitrotoluene, diphenylamine, ethyl centralite, and di-n-butyl phthalate. Concentration changes between pre- and post-blast smokeless powder particles were determined as well as microscopic differences between pre- and post-blast debris for both smokeless powders …
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Light-emitting diodes from polyfluorenes: characterisation and stability of performance
… of poly(9,9’-dioctylfluorene-co-N-(4-butylphenyl)diphenylamine) (TFB) and poly(9,9’-dioctylfluorene-co-benzothiadiazole) (F8BT), using pulsed electroluminescence. A strongly morphology-dependent spike-transient is observed in the electroluminescence at turn-on, and this is investigated by …
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Relationship of free radical scavenging enzymes to fruit growth, development, ripening, and senescence in 'Red Delicious' apples
… to determine the effect of scald inhibitors diphenylamine (DPA) and CaCl$\sb2$ on activities of these enzymes during fruit ripening and scald development. There were significant relationships among DPA treatment, enzymes activities, fruit maturity, and scald development. DPA treatment and …
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Supercritical fluid chromatography of nitrogen-containing compounds on packed columns
… The separation of model mixtures of nitrated diphenylamine and nitrated anilines via SFC employing cyanopropyl packed and capillary columns is described. Peak identification and peak purity were performed by on-line Fourier transform infrared spectrometric detection. Supercritical CO₂ is …
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Synthesis, Molecular Structure and Reactivity of Di(1-cyclohepta-2,4,6-trienyl) thioether, S(C7H7)2 and Tri(1-cyclohepta-2,4,6-trienyl) amine, N(C7H7)3
… (28), and (1-cyclohepta-2,4,6-trienyl)diphenylamine, N(Ph)2(C7H7) (29) were prepared using aniline or diphenylamine. The reaction of N(C7H7)3 (24) with [C7H7]BF4 (1:1) leads to the N-tropylidene-N-(1-cyclohepta-2,4,6-trienyl)immonium tetrafluoroborate salt, [(C7H6)N(H)(C7H7)]BF4 (30). …
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The use of serface fuintionalised silica nano-particlate powders for the identification of gunshot residues from fingerprints
… compounds in GSR. These compounds include diphenylamine, methylcentralite, ethylcentralite, nitroglycerine, 2-nitrodiphenylamine and 4-nitrodiphenylamine. It has been clearly demonstrated using standard materials and appropriate calibration curves that gas chromatograph and mass …
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THE RELEASE OF CONTAMINANTS BY LEACHING FROM BOIL-IN BAG LAMINATES
… bis-phenyl amine, dimethylaminobenzaldehyde, diphenylamine, dimethylacridine and benzylidene aniline. Other migrants identified included diphenylether, benzylbenzoate and guaiol. A number of the identified migrants are present as impurities in the films, whereas some are postulated to be the …
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The design of a commercial plant for the production of ethylene glycol
… diameter and 11.7 inches long, surrounded by a diphenylamine constant temperature bath. The tube was filled to a depth of 10 inches with the metallic silver catalyst. Rates of flow of the air and ethylene streams were controlled by means of needle valves and indicated by water filled manometers. …
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Synthesis, characterisation and application of low molecular weight and polymeric 1,3-di-2-thienylbenzo[c]thiophenes
… the introduction of different substituents into diphenylamine allows manipulation of HOMO level in DTITNPDs. Thus, the combination of DTITN and triarylamines leads to DTITNPD, where the values of both energy levels can be varied. Novel DTITNPDs exhibit smaller band gap compared to DTITNs. The …
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