A Hyperbranched Polyol Process for Designing and Manufacturing Nontoxic Cobalt Nanocomposite.
Anastasia BurmatovaArtur A KhannanovAlexander V GerasimovKlara IgnatevaElena KhaldeevaArina GorovaiaAirat G KiiamovVladimir EvtugynMarianna KutyrevaPublished in: Polymers (2023)
A method for the design and synthesis of a metallopolymer composite (CoNP) based on cobalt nanoparticles using the hyperbranched polyol process was developed. It was shown that hyperbranched polyester polyols in a melted state can be both a reducing agent and a stabilizer of metal nanoparticles at the same time. The mechanism of oxidation of hyperbranched polyol was studied using diffuse reflectance IR spectroscopy. The process of oxidation of OH groups in G4-OH started from 90 °C and finished with the oxidation of aldehyde groups. The composition and properties of nanomaterials were determined with FT-IR and UV-Vis spectroscopy, Nanoparticle Tracking Analysis (NTA), thermogravimetric analysis (TG), powder X-ray diffraction (XRD), NMR relaxation, and in vitro biological tests. The cobalt-containing nanocomposite (CoNP) had a high colloidal stability and contained spheroid polymer aggregates with a diameter of 35-50 nm with immobilized cobalt nanoparticles of 5-7 nm. The values of R 2 and R 1 according to the NMR relaxation method for CoNPs were 6.77 mM·ms -1 × 10 -5 and 4.14 mM·ms -1 × 10 -5 for, respectively. The ratio R 2 /R 1 = 0.61 defines the cobalt-containing nanocomposite as a T 1 contrast agent. The synthesized CoNPs were nonhemotoxic (HC 50 > 8 g/mL) multifunctional reagents and exhibited the properties of synthetic modulators of the enzymatic activity of chymosin aspartic proteinase and exhibited antimycotic activity against Aspergillus fumigatus . The results of the study show the unique prospects of the developed two-component method of the hyperbranched polyol process for the creation of colloidal multifunctional metal-polymer nanocomposites for theranostics.
Keyphrases
- reduced graphene oxide
- carbon nanotubes
- high resolution
- gold nanoparticles
- solid state
- magnetic resonance
- metal organic framework
- hydrogen peroxide
- single molecule
- visible light
- multiple sclerosis
- mass spectrometry
- drug delivery
- ms ms
- quantum dots
- photodynamic therapy
- cancer therapy
- small molecule
- computed tomography
- nitric oxide
- electron transfer
- optic nerve
- liquid chromatography
- electron microscopy