Chitosan/heparin blends in ionic liquid produce polyelectrolyte complexes that quickly adsorb citrate-capped silver nanoparticles, forming bactericidal composites was written by Souza, Paulo R.;Vilsinski, Bruno H.;de Oliveira, Ariel C.;Berton, Sharise B. R.;Nunes, Catia S.;Kipper, Matt J.;Schrekker, Henri S.;Martins, Alessandro F.;Muniz, Edvani C.. And the article was included in Journal of Molecular Liquids in 2021.Formula: C10H20N2O4S The following contents are mentioned in the article:
We present chitosan (CHT)/heparin (HP) polyelectrolyte complexes (PECs) that quickly adsorb citrate-capped silver nanoparticles (AgNPs). CHT/HP blends in ionic liquid ([HMIm][HSO4]) form durable PECs after precipitation in water. CHT/HP PECs have pos. Zeta potentials (higher than +20 mV). They adsorb citrate-capped AgNPs (Zeta potential of – 12.25 mV) synthesized from Turkevichs method. PEC/AgNPs composites are characterized by spectroscopic, thermal, and microscopy analyses. AgNPs on the PEC surfaces are confirmed by transmission electron microscopy. PECs adsorb AgNPs from aqueous suspensions, achieving 鈮?95% of removal (17.18渭g of AgNPs per mg of PEC) after only 10 min. The pseudo-second-order kinetic model adjusted well to the exptl. data. The PECs release approx. 11.80渭g/mg Ag+ (66%) compared to the initial adsorbed AgNPs content (17.18渭g/mg) after 7200 min at pH 2.0. The PECs present low swelling degrees (between 130 and 150%), supporting high stability in water. PEC/AgNPs composites promote significant bactericidal activity toward Staphylococcus aureus and Escherichia coli between 0.25 and 0.5 mg/mL. This study shows a new strategy to create hybrid polysaccharide/AgNPs composites. PECs can stabilize the AgNPs and release Ag+ ions, supporting antimicrobial materials. This study involved multiple reactions and reactants, such as 1-Hexyl-3-methyl-1H-imidazol-3-ium hydrogensulfate (cas: 478935-29-4Formula: C10H20N2O4S).
1-Hexyl-3-methyl-1H-imidazol-3-ium hydrogensulfate (cas: 478935-29-4) belongs to imidazole derivatives. Imidazole is a heterocyclic compound with a five-membered planar ring. It is amphoteric and highly polar. Imidazole is incorporated into many important biological compounds. The most pervasive is the amino acid histidine, which has an imidazole side-chain. Histidine is present in many proteins and enzymes, e.g. by binding metal cofactors, as seen in hemoglobin.Formula: C10H20N2O4S
Referemce:
Imidazole – Wikipedia,
Imidazole | C3H4N2 – PubChem