Results 31 to 40 of about 57,191 (159)

Intramolecular Interactions in Derivatives of Uracil Tautomers

open access: yesMolecules, 2022
The influence of solvents on intramolecular interactions in 5- or 6-substituted nitro and amino derivatives of six tautomeric forms of uracil was investigated.
Paweł A. Wieczorkiewicz   +2 more
doaj   +1 more source

Rotational Barrier and Bond Dissociation Energy and Enthalpy: Computational Study of the Substituent Effects in Para-Substituted Anilines and Phenols

open access: yesIndonesian Journal of Chemistry, 2022
This report presents the N–H and O–H bond dissociation energies (BDEs) and enthalpies (BDEts) of 27 para-substituted anilines and phenols using Density Functional Theory (DFT) with functional wB97X-D and basis set 6-31G**. The computed BDEs/ BDEts show a
Ali Hussain Yateem
doaj   +1 more source

Effect of Substituents in Mussel‐inspired Surface Primers on their Oxidation and Priming Efficiency

open access: yesChemistryOpen, 2021
Marine mussels contain an abundant catechol moiety, 3,4‐dihydroxyphenylalanine (DOPA), in their interfacial foot proteins. DOPA contributes to both surface adhesion and bridging between the surface and overhead proteins (surface priming) by taking ...
Dr. Karuppasamy Ganesh   +4 more
doaj   +1 more source

Synthesis, structure and solvatochromic properties of 3-cyano-4,6-diphenyl-5-(3- and 4-substituted phenylazo)-2-pyridones [PDF]

open access: yesJournal of the Serbian Chemical Society, 2010
A series of some new pyridone arylazo dyes was synthesized from the corresponding diazonium salts and 3-cyano-4,6-diphenyl-2-pyridone using the classical reaction for the synthesis of the azo compounds.
NINA TODOROVIĆ   +5 more
doaj  

A ring‐controlled fluorescent platform for visualizing polymer degradation

open access: yesAggregate, 2023
The creation of a new photoluminescent platform to study their photo physics and further applications is important in the fields of chemistry, material, physics, etc.
Tianhong Wu   +5 more
doaj   +1 more source

Substituent effects on the solvent power of the haloolefin HCFO-1233 yd.(Z)

open access: yesResults in Chemistry
The solvent power of the hydrochlorofluoroolefin HCFO-1233 yd.(Z) is investigated using electron-withdrawing and electron-donating substituents on the “parent” (Z)-1-X-2,3,3-trifluoropropene, where X = NH2, OH, CH3O, CH3, F, H, Cl, COOH, CF3, CN, and NO2.
A. Fan   +3 more
doaj   +1 more source

Radiation Effects on Polyacetylenes Having Substituents [PDF]

open access: yesPolymer Journal, 1985
Effects of γ-ray irradiation on high molecular weight polyacetylenes with various substituents were studied in air and in vacuum. The molecular weights of polymers from aliphatic disubstituted acetylenes (2-octyne and 2-decyne) remarkably reduced with irradiation in air.
Higashimura, T.   +4 more
openaire   +1 more source

Fluorescence of 4-Cyanophenylhydrazones: From Molecular Design to Electrospun Polymer Fibers

open access: yesMolecules
The rational design of advanced functional materials with tailored fluorescence hinges on a profound understanding of the complex interplay between a molecule’s intrinsic structure and its local solid-state environment.
Paulina Sobczak-Tyluś   +4 more
doaj   +1 more source

Structural Analysis of 3,5-Bistrifluoromethylhydrocinnamic Acid

open access: yesCrystals
The crystal structure of 3,5-bistrifluoromethylhydrocinnamic acid [systematic name: 3-[3,5-bis(trifluoromethyl)phenyl]propanoic acid], C11H8F6O2, has been determined and described.
Piotr F. J. Lipiński, Krzysztof Łyczko
doaj   +1 more source

Substituent Effects in Ugi–Smiles Reactions

open access: yesThe Journal of Physical Chemistry A, 2013
In a recent communication, we described the mechanism of the well-known Ugi-type reactions with a model system (J. Org. Chem. 2012, 77, 1361-1366). Herein, focusing on the Ugi-Smiles coupling, we study the effects of each of the four reactants on the energy profile to further explain the experimental results.
Chéron, Nicolas   +4 more
openaire   +3 more sources

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