Results 41 to 50 of about 197,331 (314)

Magnetic amine-functionalized graphene oxide as a novel and recyclable bifunctional nanocatalyst for solvent-free synthesis of pyrano[3,2-c]pyridine derivatives [PDF]

Nanochemistry Research, 2017
The new magnetic amine-functionalized graphene oxide (Fe3O4-GO-NH2) nanocatalyst was prepared through the reaction of 3-aminopropyltriethoxysilane (APTES) with magnetic graphene oxide (Fe3O4-GO).
Shahnaz Rostamizadeh, Asieh Hemmasi, Negar Zekri   +2 more
doaj   +1 more source

Reaction of Pyridine Bases with Carboxylic Acids in Benzene [PDF]

Bulletin of the Chemical Society of Japan, 1977
Abstract The reaction of pyridine bases with aliphatic monocarboxylic acids has been studied by means of the partition method. Partition was carried out at 25 °C between benzene and 0.10 mol dm−3 (Na, H) ClO4 aqueous solution, the total concentration of pyridine base and that of carboxylic acid being less than 2×10−2 mol dm−3 and 1.0 mol
Katsumi Hirose, Motoharu Tanaka
openaire   +1 more source

Quaterpyridine Ligands for Panchromatic Ru(II) Dye Sensitizers [PDF]

, 2012
A new general synthetic access to carboxylated quaterpyridines (qpy), of interest as ligands for panchromatic dyesensitized solar cell organometallic sensitizers, is presented.
Abbotto, Alessandro, Coluccini, Carmine, De Angelis, Filippo, Lobello, Maria Grazia, Manfredi, Norberto, Ruffo, Riccardo, Salamone, Matteo M   +6 more
core   +1 more source

Unravelling the surface chemistry of metal oxide nanocrystals, the role of acids and bases [PDF]

, 2014
We synthesized HfO2 nanocrystals from HfCl4 using a surfactant-free solvothermal process in benzyl alcohol and found that the resulting nanocrystals could be transferred to nonpolar media using a mixture of carboxylic acids and amines.
De Keukeleere, Katrien, De Roo, Jonathan, Hens, Zeger, Martins, José, Van den Broeck, Freya, Van Driessche, Isabel   +5 more
core   +1 more source

Biosynthesis of thiocarboxylic acid-containing natural products. [PDF]

, 2018
Thiocarboxylic acid-containing natural products are rare and their biosynthesis and biological significance remain unknown. Thioplatensimycin (thioPTM) and thioplatencin (thioPTN), thiocarboxylic acid congeners of the antibacterial natural products ...
Deng, Youchao, Dong, Liao-Bin, Duan, Yanwen, He, Cyndi Qixin, Houk, KN, Huang, Yong, Kang, Dingding, Rudolf, Jeffrey D, Shen, Ben, Wang, Nan   +9 more
core   +1 more source

Polyferrocene‐Based Cubosomes: Conversion to Magnetic Mesoporous Microparticles, Supramolecular Modification, and Oxidation Response

Advanced Functional Materials, EarlyView.
Polyferrocene block copolymers are synthesized and assembled into micron‐sized polymer cubosomes with double diamond lattice and pore diameter of ≈30 nm. The ferrocene functionality is retained within the polymer cubosome wall as demonstrated on supramolecular modification, and oxidative disassembly.
Chin Ken Wong, Suna Azhdari, Marvin Foith, Chen Chen, André H. Gröschel   +4 more
wiley   +1 more source

Sustainable Catalyst‐Free PLG Networks: Recyclability, Biodegradability, and Functional Performance

Advanced Functional Materials, EarlyView.
A catalyst‐additive free covalent adaptable network is developed from star‐shaped poly(lactide‐co‐glycolide) cross‐linked with pyromellitic dianhydride, enabling internal carboxylic acid‐driven transesterification. The resulting biodegradable network exhibits mechanical robustness (Young's modulus ≈1.6 GPa), complete recyclability, rapid biodegradation
Lars Schwarzer, Emilia Fulajtar, Seema Agarwal   +2 more
wiley   +1 more source

Thermal and mesomorphic behavior of hydrogen-bonded liquid crystals of new pyridine derivatives

Discover Applied Sciences
The fascinating supramolecular structures formed through intermolecular hydrogen bonding (HB) interactions have gained importance in materials and biological science research.
Suma Ramachandra Gopady, V. N. Vijayakumar, Raviraj Shetty, Mallikarjun Bhavanari, Srinivasulu Maddasani   +4 more
doaj   +1 more source

Borane-Pyridine: An Efficient Catalyst for Direct Amidation

Molecules
Borane-pyridine acts as an efficient (5 mol%) liquid catalyst, providing improved solubility for the direct amidation of a wide range of aromatic and aliphatic carboxylic acids and amines to form secondary and tertiary carboxamides.
P. Veeraraghavan Ramachandran, Aman Singh, Harry Walker, Henry J. Hamann   +3 more
doaj   +1 more source

Exo-Functionalized Metallacages as Host-Guest Systems for the Anticancer Drug Cisplatin

Frontiers in Chemistry, 2019
Within the framework of designing new self-assembled metallosupramolecular architectures for drug delivery, seven [Pd2L4]4+ metallacages (L = 2,6-bis(pyridine-3-ylethynyl)pyridine) featuring different groups in exo-position, selected to enhance the cage ...
Ben Woods, Margot N. Wenzel, Thomas Williams, Sophie R. Thomas, Robert L. Jenkins, Angela Casini   +5 more
doaj   +1 more source