Biological properties of printable polyaniline and polyaniline–silver colloidal dispersions stabilized by gelatin

Synthesis of new nanocomposite based on nanoceramic and mono substituted polyoxometalate, PMo11Cd@MnFe2O4, with superior catalytic activity for oxidative desulfurization of real fuel

“…As noted previously, since the supported PMo 12 has strong interactions with the surface of MnFe 2 O 4 , the structure of POM remains unaltered after the reactions. After the creation of peroxometallic intermediates by electrophilic reactions with H 2 O 2, [36][37][38][39] therefore, they can oxidize adsorbed sulfur compounds in the same reaction as well. The resulted polar DBTO/DBTO 2 species could then abandon the oil phase and transfer to the water phase via extraction solvent (ACL).…”

Enzyme-Catalyzed Polymerization Process: A Novel Approach to the Preparation of Polyaniline Colloidal Dispersions with an Immunomodulatory Effect

“…The spectrum of PANI-CHIT colloids shows maxima at λ of ∼330 and 770 nm in water, and 300 and 780 nm in HCl. In the study, PANI colloids stabilized with chitosan prepared by standard chemical oxidation with APS showed a similar course of spectra, with slightly shifted distinct maxima at 390 and 800 nm. The abovementioned difference in the color between nonstabilized PANI-N (brown) and PANI-PVA and PANI-CHIT (green) is also evident from the spectra obtained on the PANI-N sample dispersed in water, which does not show a course typical of the green PANI salt.…”

Conducting composite films based on chitosan or sodium hyaluronate. Properties and cytocompatibility with human induced pluripotent stem cells

“…Recently, the antibacterial activity of PANI/chitosan composite was reported by Mohamadi et al (Mohammadi, Pirsa, & Alizadeh, J o u r n a l P r e -p r o o f 16 2019), who demonstrated the efficacy of the composite against E.coli and related this efficacy to the content of PANI in the film. Also, Bober et al (Bober et al, 2017) reported on the antibacterial activity of composite films of PANI with gelatin against S. aureus and E. coli. It is therefore plausible that the antibacterial effect of composites is mainly caused by neat PANI (in the form of salt).…”

“…They are prepared via aniline polymerization in the presence of a steric stabilizer, which produces a colloidal PANI in the form of an aqueous dispersion (Stejskal & Sapurina, 2005). Commonly, water-soluble synthetic polymers or surfactants can be used as stabilizers; nevertheless, only a few biomacromolecules, such as cellulose derivatives (Chattopadhyay, Banerjee, Chakravorty, & Mandal, 1998;Stejskal, Spirkova, et al, 1999) or gelatin (Bober et al, 2017), have been exploited for the synthesis of colloidal PANI. For materials coming into contact with cells and tissues, polysaccharides such as sodium hyaluronate and chitosan appear to be excellent candidates as stabilizers due to their good environmental, and especially, biological properties (Kasparkova et al, 2019).…”