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Polycondensation of Silicon and Titanium Dioxide Precursors on Natural and Synthetic Polymeric Matrices


In this report we examined the ability of some natural and synthetic polymers to serve as a catalyst and a template for the polycondensation of silicon and titanium dioxides from their water-soluble precursors – tetrakis (2-hydroxyethyl) orthosilicate (THEOS) and titanium bis(ammonium lactato) dihydroxide (TiBALDH). The catalytic potential of these polymers was estimated spectrophotometrically, and the size, shape and elemental composition of the resulting structures were determined by scanning electron microscopy (SEM) and energy dispersive X-ray spectroscopy (EDS). It was shown that albumin and polyethyleneimine can be used to obtain SiO2 and TiO2 particles, respectively. Such homopolymers as the poly-D- and poly-L-lysine efficiently catalyze the synthesis of both silicon and titanium nanocomposite materials.

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This work was supported by a grant from FEB RAS 18-3-045. The SEM was performed using the equipment of the Biotechnology and Genetic Engineering Center for Biological Diversity, Far Eastern Branch of the Russian Academy of Sciences.

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Correspondence to Y. N. Shkryl.

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The authors declare no conflict of interest.

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Abbreviations: BSA, bovine serum albumin; LPEI, linear polyethyleneimine; MB, horse myoglobin; PDL, poly-D-lysine; BPEI, branched polyethyleneimine; PLL, poly-L-lysine; HRP, horseradish peroxidase; TiBALDH, titanium bis(ammonium lactate) dihydroxide; THEOS, tetrakis(2-hydroxyethyl) orthosilicate.

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Shkryl, Y.N., Degtyarenko, A.I., Gorpenchenko, T.Y. et al. Polycondensation of Silicon and Titanium Dioxide Precursors on Natural and Synthetic Polymeric Matrices. Russ J Bioorg Chem 46, 866–868 (2020).

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  • silicon dioxide
  • titanium dioxide
  • nanocomposite
  • tetrakis (2-hydroxyethyl) orthosilicate
  • titanium bis (ammonium lactato) dihydroxide