Results 11 to 20 of about 9,719 (268)

Investigations of the reactivity of pyridine carboxylic acids with diazodiphenylmethane in protic and aprotic solvents. Part II. Pyridine mono-carboxylic acid N-oxides [PDF]

open access: yesJournal of the Serbian Chemical Society, 2006
The rate constants for the reaction of three isomeric pyridine mono-carbocylic acid N-oxides with diazodiphenylmethane were determined at 30 ºC in thirty two protic and aprotic solvents by the well known UV spectrophotometric method.
MILICA MISIC-VUKOVIC   +3 more
doaj   +3 more sources

Investigation of the Superoxide Anion-Triggered Chemiluminescence of Coelenterazine Analogs

open access: yesApplied Sciences, 2023
Reactive oxygen species (ROS), including superoxide anion, are involved in regulating various signaling pathways and are also responsible for oxidative stress. Sensing superoxide anion is of particular importance due to its biological significance.
El Hadi Erbiai   +3 more
doaj   +1 more source

Spectrophotometric determination of the acidity constants of calcon in water and mixed water-organic solvents [PDF]

open access: yesJournal of the Serbian Chemical Society, 2009
The acid-base properties of calcon (1-(2-hydroxy-1-naphthylazo)-2- -naphthol-4-sulfonic acid) in water and mixed water-organic solvents at 25 °C at an ionic strength of 0.10 M are studied by a multiwavelength spectrophotometric method.
Mazloum-Ardakani Mohammad   +4 more
doaj   +3 more sources

CO2 Electroreduction in Organic Aprotic Solvents: A Mini Review

open access: yesJournal of Chemistry, 2022
An annual increase of CO2 concentrations in the atmosphere causes global environmental problems, addressed by systematic research to develop effective technologies for capturing and utilizing carbon dioxide.
Оrest Kuntyi   +2 more
doaj   +1 more source

Post-modification of PLLA nanofiber nonwovens by various solvent treatments

open access: yesCurrent Directions in Biomedical Engineering, 2023
Degradable polymeric Biomaterials, such as polylactic acid, are widely used in medical field as bioresorbable implant coatings. More recently, stent covers, implantable tubes or wound dressings made from electrospun nanofibers have been developed.
Götz Andreas   +4 more
doaj   +1 more source

Investigations of the reactivity of pyridine carboxylic acids with diazodiphenylmethane in protic and aprotic solvents, Part I: Pyridine mono-carboxylic acids [PDF]

open access: yesJournal of the Serbian Chemical Society, 2005
Rate constants for the reaction of diazodiphenylmethane with isomeric pyridine carboxylic acids were determined in chosen protic and aprotic solvents at 30 °C, using the well known UV spectrophotometric method.
Marinković Aleksandar D.   +3 more
doaj   +1 more source

Metal complexes of bilirubin in aprotic solvents [PDF]

open access: yesBiochemical Journal, 1973
Bilirubin reacts with zinc acetate, cadmium acetate or cobaltous acetate in dry dipolar aprotic solvents to form highly coloured complexes. The complex formed in NN-dimethylformamide can be isolated as a solid with bilirubin:zinc:acetate:NN-dimethylformamide molar proportions of 1:3:2:2.
D W, Hutchinson, B, Johnson, A J, Knell
openaire   +2 more sources

Solvent effect on the absorption and emission spectra of carbon dots: evaluation of ground and excited state dipole moment

open access: yesBMC Chemistry, 2021
Background Carbon dots (C-dots) are photoluminescent nanoparticles with less than 10 nm in size. Today, many studies are performed to exploit the photoluminescence (PL) property of carbon dots, and our focus in this study is to estimate the dipole moment
Parisa Mohammad-Jafarieh   +4 more
doaj   +1 more source

Influence of New Aprotic Electrolytes on Negative Electrode Materials for Lithium-ion Batteries

open access: yesInternational Journal of Electrochemical Science, 2015
This paper briefly describes experiments which investigate mutual compatibility of aprotic solvents and negative electrode materials. The work follows the current trend of enhancing fire safety by using new kinds of aprotic solvents.
Josef Máca   +4 more
doaj   +1 more source

New Screening Protocol for Effective Green Solvents Selection of Benzamide, Salicylamide and Ethenzamide

open access: yesMolecules, 2022
New protocol for screening efficient and environmentally friendly solvents was proposed and experimentally verified. The guidance for solvent selection comes from computed solubility via COSMO-RS approach.
Maciej Przybyłek   +3 more
doaj   +1 more source

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