Results 61 to 70 of about 5,170,686 (370)

3,7-Dichloroquinoline-8-carboxylic acid

Acta Crystallographica Section E, 2008
The title compound (trade name: quinclorac), C10H5Cl2NO2, was crystallized from a dimethyl sulfoxide solution. Quinclorac molecules are packed mainly via π–π stacking interactions between neighbouring heterocycles (interplanar distance: 3.
Xin-Hong Guo
doaj   +1 more source

Synthesis of 3-Bromo-4-phenylisothiazole-5-carboxylic Acid and 3-Bromoisothiazole-5-carboxylic Acid

Molbank, 2023
Reactions of 3-bromo-4-phenylisothiazole-5-carboxamide and 3-bromoisothiazole-5-carboxamide with NaNO2 (4 equiv.), in TFA, at ca. 0 °C gave the carboxylic acid products in 99% and 95% yields, respectively. The two compounds were fully characterized.
Andreas S. Kalogirou, Panayiotis A. Koutentis   +1 more
doaj   +1 more source

Development of a Novel Processing Route for Dispersoid/Precipitation‐Strengthened High Conductive Copper Alloys by Using Metalized Nanoceramics in Additive Manufacturing

Advanced Engineering Materials, EarlyView.
This study explores a process chain to produce dispersoid‐strengthened CuCr1Zr for applications requiring high strength and conductivity. Using gas‐atomized powder and copper‐plated alumina nanoparticles, additive manufacturing is performed via powder bed based additive manufacturing with green and red lasers, followed by heat treatment.
Heinrich von Lintel, Abdelrahman Elsayed, Lukas Mielewczyk, Katja Eichmann, Julia Grothe, Ulrich Krupp, Avinash Hariharan, Katrin Jahns   +7 more
wiley   +1 more source

Crystal structure of (E)-dodec-2-enoic acid

Acta Crystallographica Section E: Crystallographic Communications, 2015
The crystal structure of (E)-dodec-2-enoic acid, C12H22O2, an α,β-unsaturated carboxylic acid with a melting point (295 K) near room temperature, is characterized by carboxylic acid inversion dimers linked by pairs of O—H...O hydrogen bonds.
Marcel Sonneck, Tim Peppel, Anke Spannenberg, Sebastian Wohlrab   +3 more
doaj   +1 more source

The Factors Affecting on Association of Some Carboxylic Acids Effect of Solvent, Isomerism, Conjugation Process and Steric Effect [PDF]

مجلة التربية والعلم, 2008
The study is mainly concerned with the physical factors affecting on association of carboxylic acids such as type of solvent, isomers, conjugation and steric effect of acid.
A.S.P. Azzouz, M. M.H. Al-Niemi
doaj   +1 more source

Enhanced Mechanical Properties of Injectable Chitosan–Guar Gum Hydrogel Reinforced with Bacterial Cellulose Nanofibers for Tissue Engineering Applications

Advanced Engineering Materials, EarlyView.
This study presents the development and characterization of injectable nanocomposite hydrogels based on N‐succinyl chitosan, oxidized guar gum, and bacterial cellulose nanofibers. Emphasizing enhanced mechanical properties and biocompatibility, the hydrogels exhibit fast gelation, improved structural integrity, and reduced swelling. Their potential for
Raimundo Nonato Fernandes Moreira Filho, Pascale Chevallier, Silvia Rodriguez Fernandez, Maud Viallon, Matheus Xavier de Oliveira, Ana Lorena de Brito Soares, Diego Mantovani, Judith Pessoa de Andrade Feitosa, Rodrigo Silveira Vieira   +8 more
wiley   +1 more source

Heterogeneous and homogeneous catalysis for the hydrogenation of carboxylic acid derivatives: history, advances and future directions.

Chemical Society Reviews, 2015
The catalytic reduction of carboxylic acid derivatives has witnessed a rapid development in recent years. These reactions, involving molecular hydrogen as the reducing agent, can be promoted by heterogeneous and homogeneous catalysts.
James Pritchard, G. Filonenko, Robbert van Putten, E. Hensen, E. Pidko   +4 more
semanticscholar   +1 more source

Recent Progress on 2D‐Material‐Based Smart Textiles: Materials, Methods, and Multifunctionality

Advanced Engineering Materials, EarlyView.
Advancements in 2D‐material‐integrated smart textiles are reviewed, with a focus on materials, fabrication methods, and multifunctional applications, including energy harvesting, monitoring, EMI shielding, energy storage, and thermal management. The discussion addresses key challenges and provides insights into the future development of next‐generation
Yong Choi, Jiheon Kim, Jaemin Lee, Xinqi Chen, Byungseok Seo, Wonjoon Choi   +5 more
wiley   +1 more source

Trends in pKa Values for polyprotic carboxylic acids [PDF]

arXiv, 2020
In this work we have reported the pKa values for straight chain (without branches) oligomers of Acrylic acid using CBS-QB3 gas phase energies with solvation free energies from CPCM/HF 6-31G(d) and SMD/B3LYP (2df,p). We have found that the negative log of the first acid dissociation constant decreases with the chain length.
arxiv  

A study of aliphatic amino acids using simulated vibrational circular dichroism and Raman optical activity spectra [PDF]

, 2013
Vibrational optical activity (VOA) spectra, such as vibrational circular dichroism (VCD) and Raman optical activity (ROA) spectra, of aliphatic amino acids are simulated using density functional theory (DFT) methods in both gas phase (neutral form) and solution (zwitterionic form), together with their respective infrared (IR) and Raman spectra of the ...
arxiv   +1 more source