Results 11 to 20 of about 4,323 (229)

Spectroscopic behavior of pyrrolanthrone and its derivative in aprotic and protic solvents [PDF]

open access: yesInternational Conference on Atomic and Molecular Pulsed Lasers XIII, 2018
Recently synthesized pyrrolanthrone, naphtho[1,2,3-cd]indole-6(2H)-one (PyAn), and its water-soluble derivative, 3(naphtho[1,2,3-cd]indole-6(2H)-one-2-yl) sodium propylsulfonate, are very promising for anticancer therapy due to both the fluorescent and cytotoxic properties.
Merezhko, A. G.   +4 more
openaire   +7 more sources

Effects of solvent and structure on the reactivity of 6-substituted nicotinic acids with diazodiphenylmethane in aprotic solvents [PDF]

open access: yesJournal of the Serbian Chemical Society, 2009
The rate constants for the reactions of diazodiphenylmethane (DDM) with 6-substituted nicotinic acids in aprotic solvents at 30°C were determined. The obtained second order rate constants in aprotic solvents, together with literature data for benzoic and
Drmanić Saša Ž.   +2 more
doaj   +5 more sources

Broadband fluorescence reveals mechanistic differences in excited-state proton transfer to protic and aprotic solvents. [PDF]

open access: yesChem Sci, 2020
Excited-state proton transfer (ESPT) to solvent is often explained according to the two-step Eigen-Weller model including a contact ion pair (CIP*) as an intermediate, but general applicability of the model has not been thoroughly examined.
Verma P   +4 more
europepmc   +2 more sources

Polar protic and aprotic solvents induced nonlinear optical and optical limiting properties of Xanthene dye: A DFT Study [PDF]

open access: yesChemical Physics Impact
Rose Bengal (RB), a xanthene dye, exhibits exceptional nonlinear optical (NLO) properties in both polar protic and aprotic solvents, including ethanol, methanol, 1-propanol, and acetone.
Natarajan Arumugam   +6 more
doaj   +2 more sources

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

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

Solvent effect on electronic absorption spectra of some 2-aminobenzimidazoles [PDF]

open access: yesActa Periodica Technologica, 2002
The effect of protic and aprotic solvents on electronic apsorption spectra of 1-(3-X-benzil)-2-aminobenzimidazoles (X=CH3;OCH3; Cl) was examined. UV-apsorption spectra (200-400 nm) were recorded in five protic and four aprotic solvents. Batochromic shift
Perušić-Janjić Nada U.   +2 more
doaj   +1 more source

The Role of Solvent on the Kinetics and Mechanism of the Hydrolysis of Salicylidene Benzoyl Hydrazone [PDF]

open access: yesمجلة جامعة النجاح للأبحاث العلوم الطبيعية, 1988
The effect of various solvents on the kinetics and mechanism of the hydrolysis of Salicylidene Benzoyl hydrazone (SBH) has been studied at five different temperatures (17-45 C) using U.V. and visible spectrophotometry. In both protic and aprotic solvents,
Maher Abu-Eid
doaj   +1 more source

Poly(Pyridinium Salt)s Containing 2,7-Diamino-9,9′-Dioctylfluorene Moieties with Various Organic Counterions Exhibiting Both Lyotropic Liquid-Crystalline and Light-Emitting Properties

open access: yesMolecules, 2021
A series of poly(pyridinium salt)s-fluorene main-chain ionic polymers with various organic counterions were synthesized by using ring-transmutation polymerization and metathesis reactions. Their chemical structures were characterized by Fourier Transform
Pradip K. Bhowmik   +8 more
doaj   +1 more source

Hydrothermal Reactions of Biomass-Derived Platform Molecules: Distinct Effect of Aprotic and Protic Solvents on Primary Decomposition of Glucose and Fructose in Hot-Compressed Solvent/Water Mixtures [PDF]

open access: yes, 2020
The study compares the effects of aprotic (i.e., gamma-valerolactone, acetone, and 1,4-dioxane) and protic (i.e., methanol and ethanol) solvents on the primary decomposition reactions of glucose and fructose, which are key biomass-derived platform ...
Zhiliang Wu (618345)   +7 more
core   +1 more source

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