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The influence of organic-inorganic ureasil-based polymers containing sulfur on the bioanalytical properties of electrochemical biosensors was studied. The ureasil-As2S3 (0.1 g of As2S3) and ureasil-chalcogenide (0.066 and 0.198 g of S) composites were selected for research. Network properties (free volume) of the samples are rather similar as revealed by positron annihilation lifetime spectroscopy (PALS) measurements. At the same time, the effect of sulfur on the operational parameters of laccase biosensors was observed. In particular, the obtained results showed the differences in the sample responses in chronoamperometric measurements which most probably do not originate from differences in the structure of the samples at the nanoscale level. The results of this work support the earlier proposed topological and chemical mechanisms for effective enzyme immobilization using holding polymer matrixes.

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Organic-Inorganic Ureasil-Based Composites with Sulfur for Biosensors

  • 会议论文

  • 发表日期：

    2025年

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  • Taras Kavetskyy,
  • Yuliia Kukhazh,
  • Olha Demkiv,
  • Liudmyla Pankiv,
  • Ondrej Šauša,
  • Julia Warowna,
  • Bozena Zgardzińska,
  • Marek Gorgol,
  • Plamen Petkov,
  • Kolyo Kolev,
  • Victor Boev,
  • Vania Ilcheva,
  • Tamara Petkova,
  • Arnold Kiv

摘要

The influence of organic-inorganic ureasil-based polymers containing sulfur on the bioanalytical properties of electrochemical biosensors was studied. The ureasil-As2S3 (0.1 g of As2S3) and ureasil-chalcogenide (0.066 and 0.198 g of S) composites were selected for research. Network properties (free volume) of the samples are rather similar as revealed by positron annihilation lifetime spectroscopy (PALS) measurements. At the same time, the effect of sulfur on the operational parameters of laccase biosensors was observed. In particular, the obtained results showed the differences in the sample responses in chronoamperometric measurements which most probably do not originate from differences in the structure of the samples at the nanoscale level. The results of this work support the earlier proposed topological and chemical mechanisms for effective enzyme immobilization using holding polymer matrixes.