Effect of complexation of poly(acrylic acid) with Cu2+ ions on the size of copper nanoparticles prepared via reduction in aqueous solutions

Litmanovich, O. E.; Ostaeva, G. Yu.; Tatarinov, V. S.; Bogdanov, A. G.; Papisov, I. M.

doi:10.1134/s1560090410070043

Cited by 15 publications

(2 citation statements)

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“…TEM micrographs revealed aggregation of Gibbsite platelets (see ESI †), likely caused by a complexation reaction between the positively charged copper ions and negatively charged carboxylic acid groups of acrylic acid from the ATRP macroinitiator/stabilizer. 40,41 In order to find a catalyst concentration at which the colloidal stability of the platelets is not affected, the effect of [Cu 2+ ] on the D z of ATRP macroinitiator stabilized Gibbsite platelets was studied (Fig. 2).…”

Section: Preparation and Characterisation Of Polymer-gibbsite Latex P...mentioning

confidence: 99%

An ATRP-based approach towards water-borne anisotropic polymer–Gibbsite nanocomposites

et al. 2016

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Section: Preparation and Characterisation Of Polymer-gibbsite Latex P...mentioning

confidence: 99%

An ATRP-based approach towards water-borne anisotropic polymer–Gibbsite nanocomposites

et al. 2016

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“…Poly(acrylic acid) forms M(PAA) and M(PAA) 2 complex species, which show similar binding affinities. Based on the literature reports on the possible binding modes with similar ligands, we can suppose that “ two coordinations of the metal ion are satisfied by the two carboxyl anions, and the residual two coordinations are satisfied by the oxygen of two carboxyl groups in the polymer ” [ 47 , 48 , 49 ].…”

Section: Resultsmentioning

confidence: 99%

pH-Responsive Cobalt(II)-Coordinated Assembly Containing Quercetin for Antimicrobial Applications

Santonoceta

Sgarlata

2023

Molecules

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The development of novel drug delivery systems (DDSs) with promising antibacterial properties is essential for facing the emergency of increasing resistance to antimicrobial agents. The antibacterial features of quercetin and its metal complexes have been broadly investigated. However, several drawbacks affect their activity and effectiveness. In this work, we propose a DDS based on a pH-responsive cobalt(II)-coordinated assembly containing quercetin and polyacrylic acid. This system is suggested to trigger the release of the model drug in a pH-dependent mode by exploiting the localized acidic environment at the bacterial infection sites under anaerobic conditions. The delivery system has been designed by accurately examining the species and the multiple equilibria occurring in solution among the assembly components. The formation of cobalt(II) complexes with quercetin in the absence or presence of the pH-responsive polyacrylic acid was investigated in buffered aqueous solution at pH 7.4 using spectrophotometric (UV-Vis) and calorimetric (ITC) techniques. The determined binding affinities and thermodynamic parameters that resulted are essential for the development of a DDS with improved binding and release capabilities. Furthermore, the affinity of the polymer–cobalt(II) complex toward the model antimicrobial flavonoid was explored at the solid–liquid interface by quartz crystal microbalance (QCM-D) experiments, which provided marked evidence for drug loading and release under pH control.

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Generation of spatially ordered metal–polymer nanostructures in the irradiated dispersions of poly(acrylic acid)–poly(vinylimidazole)–Cu2+ complexes

et al. 2020

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Effect of complexation of poly(acrylic acid) with Cu2+ ions on the size of copper nanoparticles prepared via reduction in aqueous solutions

Cited by 15 publications

References 6 publications

An ATRP-based approach towards water-borne anisotropic polymer–Gibbsite nanocomposites

An ATRP-based approach towards water-borne anisotropic polymer–Gibbsite nanocomposites

pH-Responsive Cobalt(II)-Coordinated Assembly Containing Quercetin for Antimicrobial Applications

Generation of spatially ordered metal–polymer nanostructures in the irradiated dispersions of poly(acrylic acid)–poly(vinylimidazole)–Cu2+ complexes

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