Results 11 to 20 of about 64,444 (333)

Unprecedented and Readily Tunable Photoluminescence from Aliphatic Quaternary Ammonium Salts

open access: yesAngewandte Chemie, 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

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

Modified quaternary ammonium salts as potential antimalarial agents

open access: yesBioorganic and Medicinal Chemistry, 2015
A series of new quaternary ammonium salts containing a polyconjugated moiety has been synthesized and characterized; their biological activity as potential antimalarial agents was investigated, as well.
Nicoletta Basilico   +2 more
exaly   +2 more sources

The effectiveness of newly synthesized quaternary ammonium salts differing in chain length and type of counterion against priority human pathogens. [PDF]

open access: yesSci Rep, 2022
Quaternary ammonium salts (QAS) commonly occur as active substances in disinfectants. QAS have the important property of coating abiotic surfaces, which prevents adhesion of microorganisms, thus inhibiting biofilm formation.
Kula N   +4 more
europepmc   +2 more sources

Quaternary Ammonium Salts-Based Materials: A Review on Environmental Toxicity, Anti-Fouling Mechanisms and Applications in Marine and Water Treatment Industries. [PDF]

open access: yesBiomolecules
The adherence of pathogenic microorganisms to surfaces and their association to form antibiotic-resistant biofilms threatens public health and affects several industrial sectors with significant economic losses.
Marzullo P, Gruttadauria M, D'Anna F.
europepmc   +2 more sources

Study of Ground State Interactions of Enantiopure Chiral Quaternary Ammonium Salts and Amides, Nitroalkanes, Nitroalkenes, Esters, Heterocycles, Ketones and Fluoroamides. [PDF]

open access: yesChemistry, 2021
Chiral phase‐transfer catalysis provides high level of enantiocontrol, however no experimental data showed the interaction of catalysts and substrates. 1H NMR titration was carried out on Cinchona and Maruoka ammonium bromides vs.
Bencivenni G   +9 more
europepmc   +2 more sources

Efficacy of Novel Quaternary Ammonium and Phosphonium Salts Differing in Cation Type and Alkyl Chain Length against Antibiotic-Resistant Staphylococcus aureus

open access: yesInternational Journal of Molecular Sciences, 2023
Antibacterial resistance poses a critical public health threat, challenging the prevention and treatment of bacterial infections. The search for innovative antibacterial agents has spurred significant interest in quaternary heteronium salts (QHSs), such ...
Bárbara Nunes   +5 more
semanticscholar   +1 more source

Modern chemical disinfectants and antiseptics. Part II

open access: yesЖурнал органічної та фармацевтичної хімії, 2021
Aim. To generalize and systematize information on the properties of modern chemical disinfectants and antiseptic agents (DA and AA) – peroxide compounds, surfactants, salts of heavy metals and metals of variable valence in the highest oxidation state ...
Vasyl M. Britsun   +3 more
doaj   +1 more source

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

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   +1 more source

Recent advances in the application of quaternary ammonium compounds in biomedical materials

open access: yes口腔疾病防治, 2019
Microbial infections affect people worldwide. Quaternary ammonium salts serve antibacterial, antifungal,antiviral, anti⁃matrix metalloproteinase and polymerization functions. While the modification of biomaterials with quater⁃ nary ammonium salts cannot
JIAO Yang, CHEN Jihua
doaj   +1 more source

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