Results 11 to 20 of about 476,117 (197)

Synthesis and Characterization of Polysulfone-based Graft Copolymer Possessing Quaternary Ammonium Salts via Photoiniferter Polymerization

open access: yesJournal of the Turkish Chemical Society, Section A: Chemistry, 2017
Well-defined polysulfone-based graft copolymers containing quaternary ammonium salts are successfully prepared by photoiniferter method under mild conditions.
Mehmet Atilla Taşdelen, Serhat Oran
doaj   +2 more sources

Polyisocyanide Quaternary Ammonium Salts with Exceptionally Star-Shaped Structure for Enhanced Antibacterial Properties. [PDF]

open access: yesPolymers (Basel), 2022
The development of non-polluting and non-hazardous polymeric antimicrobial agents has become a hot issue in current research and development. Among them, polymer quaternary ammonium salts are thought to be one of the most promising materials for ...
Zhang H, Liu L, Hou P, Pan H, Fu S.
europepmc   +2 more sources

Switchable quaternary ammonium transformation leading to salinity-tolerance-conferring plant biostimulants [PDF]

open access: yes, 2023
Since their discovery by Menshutkin in 1890, quaternary ammonium salts have been synthesized by alkylating tertiary amines, with the development of new synthetic methods having received limited attention.
Tomoko, Hirano   +3 more
core   +2 more sources

Unprecedented and Readily Tunable Photoluminescence from Aliphatic Quaternary Ammonium Salts [PDF]

open access: yes, 2021
Compounds bearing aliphatic amines could be emissive under proper conditions. Their ionized counterparts, quaternary ammonium salts (QASs), which are widely used as phase-transfer catalysts, ionic liquids, disinfectants and surfactants, however, are ...
Xiaohong, Chen   +5 more
core   +2 more sources

Sustainable triazine-derived quaternary ammonium salts as antimicrobial agents. [PDF]

open access: yesRSC Adv, 2021
The first examples of highly efficient antimicrobial triazine-derived bis imidazolium quaternary ammonium salts (TQAS) are reported. TQAS have been prepared with an easy, atom efficient, economically sustainable strategy and tested as antimicrobial ...
Morandini A   +6 more
europepmc   +2 more sources

Bis-quaternary ammonium salts as phase transfer catalysts [PDF]

open access: yes, 1989
Lissel M, Feldman D, Nir M, Rabinovitz M. Bis-quaternary ammonium salts as phase transfer catalysts. Tetrahedron Letters. 1989;30(13):1683-1686.Bis-quaternary ammonium salts are used for the extraction of polyanions and show better extractive abilities ...
Malka Nir   +7 more
core   +1 more source

Sustainable Triazine-Based Dehydro-Condensation Agents for Amide Synthesis

open access: yesMolecules, 2021
Conventional methods employed today for the synthesis of amides often lack of economic and environmental sustainability. Triazine-derived quaternary ammonium salts, e.g., 4-(4,6-dimethoxy-1,3,5-triazin-2-yl)-4-methylmorpholinium chloride (DMTMM(Cl ...
Roberto Sole   +5 more
doaj   +1 more source

Synthesis and Correlation of Aggregation and Antimicrobial Properties of Homochiral Quaternary Ammonium Bromides Derived from Camphoric Acid

open access: yesEuropean Pharmaceutical Journal, 2021
A group of homochiral quaternary ammonium salts bearing hydrophobic camphoric acid-derived moiety was synthesized and characterized. The aggregation properties of the prepared compounds were evaluated by surface tension measurements, and the critical ...
Mikláš R.   +2 more
doaj   +1 more source

Spectroscopic and Microestructural Evidence for T-2 Toxin Adsorption Mechanism by Natural Bentonite Modified with Organic Cations

open access: yesToxins, 2023
Aluminosilicates are adsorbents able to bind mycotoxins, and their chemical modification increases their affinity to adsorb low-polarity mycotoxins.
Fernando Abiram García-García   +5 more
doaj   +1 more source

Synthesis and structural studies of a new class of quaternary ammonium salts, which are derivatives of cage adamanzane type aminal 1, 3, 6, 8-tetraazatricyclo[4.3.1.13,8]undecane (TATU)

open access: yesChemistry Central Journal, 2011
Background Novel mono N-alkyl quaternary ammonium salts (3a-f) were prepared using the Menschutkin reaction from the cage adamanzane type aminal 1,3,6,8-tetraazatricyclo[4.3.1.13,8]undecane (TATU) and alkyl iodides, such as methyl, ethyl, propyl, butyl ...
Dušek Michal   +4 more
doaj   +1 more source

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