Results 51 to 60 of about 236,480 (311)

Carboxylic‐Acid Functionalized Multiwalled Carbon Nanotube‐Alkane‐Based Resistive Temperature Sensor for Cold Chain Applications

open access: yesAdvanced Engineering Materials, EarlyView.
This study presents a reversible temperature sensor with high switching ratio, ∼103. The device is fabricated using PET‐ITO and carbon nanotube dispersions in alkane. Considering its application in cold chain logistics, a proof‐of‐concept with LED is showcased. Thus, a temperature drop below the threshold temperature (crystallization temperature of the
Sunil Kumar Behera   +8 more
wiley   +1 more source

Substituent influence of 2-pyridinecarboxylic acid framework in olefin epoxidation with oxidorhenium(V) complexes

open access: yesResults in Chemistry
In this project, we report the synthesis, full characterization, and catalytic activity in cyclooctene epoxidation reactions of five new oxidorhenium(V) complexes 1 ([ReOCl2(PPh3)(L1)]),2 ([ReOCl2(PPh3)(L2)]), 3 ([ReOCl2(PPh3)(L3)]), 4 ([ReOCl2(PPh3)(L4)]
Jana Timotijević   +6 more
doaj   +1 more source

Valorization of Lignin by Partial Wet Oxidation Using Sustainable Heteropoly Acid Catalysts

open access: yesMolecules, 2017
The production of carboxylic acids by partial wet oxidation of alkali lignin at elevated temperatures and pressures was studied experimentally. Two different heteropoly acids, phosphotungstic acid (H3PW12O40) and phosphomolybdic acid (H3PMo12O40), were ...
Abayneh Getachew Demesa   +3 more
doaj   +1 more source

The Role of Homoaromaticity in the Tropylium-Catalyzed Carboxylic Acid O-H Insertion with Diazoesters

open access: yes, 2022
The tropylium catalyzed carboxylic acid O-H insertion with diazoesters providing α-hydroxy esters was reported recently through an activated carbene as the key intermediate.
Anakuthil, Anoop, Venkataraman, Ganesh
core   +1 more source

Zein‐Based Adhesives: Sustainable Extraction and Application in Bioadhesive Technologies

open access: yesAdvanced Engineering Materials, EarlyView.
Zein is extracted from corn gluten meal using a simple and scalable process with high yield (~90%). The resulting protein is applied in bioadhesives modified with Ca2+ and Fe3+ ions, exhibiting substrate‐dependent adhesion. The findings demonstrate competitive bonding performance and highlight the role of ionic interactions in tuning adhesion ...
Paula Bertolino Sanvezzo   +3 more
wiley   +1 more source

Crystal structure of zymonic acid and a redetermination of its precursor, pyruvic acid

open access: yesActa Crystallographica Section E: Crystallographic Communications, 2019
The structure of zymonic acid (systematic name: 4-hydroxy-2-methyl-5-oxo-2,5-dihydrofuran-2-carboxylic acid), C6H6O5, which had previously eluded crystallographic determination, is presented here for the first time.
Dominik Heger   +3 more
doaj   +1 more source

New Synthesis of 7-azabicyclo[2.2.1]heptane-1-carboxylic acid [PDF]

open access: yes, 2001
This report describes a new synthetic route to 7-azabicyclo[2.2.1]heptane-1-carboxylic acid (Ahc), a constrained proline analogue, in which the key step is the Diels-Alder reaction using methyl 2-benzamidoacrylate as dienophile.
Peregrina, J.M. [0000-0003-3778-7065]   +5 more
core   +1 more source

Direct Metal Deposition of Graphene–Ti28Nb35.4Zr Matrix Composites With Enhanced Mechanical, Corrosion, and Biocompatibility Properties for Bone Implants

open access: yesAdvanced Engineering Materials, EarlyView.
Graphene nanoplatelet (0.1 wt.%) reinforcement significantly enhances the performance of β Ti‐28Nb‐35.4Zr alloy. Grain refinement, reduced water contact angle, and improved surface characteristics promote osteoblast adhesion and complete surface coverage after 7 days.
Khurram Munir   +5 more
wiley   +1 more source

Carboxylic Acids

open access: yes, 2014
Citation: 'carboxylic acids' in the IUPAC Compendium of Chemical Terminology, 3rd ed.; International Union of Pure and Applied Chemistry; 2006. Online version 3.0.1, 2019. 10.1351/goldbook.C00852 • License: The IUPAC Gold Book is licensed under Creative Commons Attribution-ShareAlike CC BY-SA 4.0 International for individual terms.
Robert J. Ouellette, J. David Rawn
  +4 more sources

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

open access: yesActa 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   +3 more
doaj   +1 more source

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