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<p>The paper presents a divergent synthesis of oligohydroxyethylaminoethyl carbonate via block co-oligocondensation of dimethyl carbonate and triethanolamine. Optimization of synthetic conditions (catalyst, reagent ratio, temperature) ensured high yields of the intermediate product (G0.5) and the final dendrimer (G1) – 99.5% and 98.91%, respectively; the Cu(II) complex was also obtained in 73% yield. The structure and properties of the compounds were confirmed by comprehensive physicochemical analysis (<sup>1</sup>H and <sup>13</sup>C NMR, IR, UV–VIS, TGA, X-ray diffraction). The morphology and particle size of the dendrimer agglomerates and its Cu(II) complex were studied by SEM, CLSM, NTA and DLS; The high stability of the dendrimer both in solution and in dry form was established, while the Cu(II) complex demonstrates a tendency to increase the size of the agglomerates after removal of the solvent, which opens up prospects for its application in optoelectronics and catalysis. Dendrimer improves the tanning of hare skins, increasing the strength and quality of the leather without reducing its technological properties.</p>

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Synthesis, structural characterization, complexation, and tanning properties of oligohydroxyethylaminoethyl carbonate dendrimer

  • 期刊论文

  • 发表日期：

    2025年11月7日

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  • Aleksei Maksimov,
  • Ksenia Maksimova,
  • Ilfat Latfullin,
  • Alla Ostrovskaya,
  • Gennadii Kutyrev

摘要

The paper presents a divergent synthesis of oligohydroxyethylaminoethyl carbonate via block co-oligocondensation of dimethyl carbonate and triethanolamine. Optimization of synthetic conditions (catalyst, reagent ratio, temperature) ensured high yields of the intermediate product (G0.5) and the final dendrimer (G1) – 99.5% and 98.91%, respectively; the Cu(II) complex was also obtained in 73% yield. The structure and properties of the compounds were confirmed by comprehensive physicochemical analysis (1H and 13C NMR, IR, UV–VIS, TGA, X-ray diffraction). The morphology and particle size of the dendrimer agglomerates and its Cu(II) complex were studied by SEM, CLSM, NTA and DLS; The high stability of the dendrimer both in solution and in dry form was established, while the Cu(II) complex demonstrates a tendency to increase the size of the agglomerates after removal of the solvent, which opens up prospects for its application in optoelectronics and catalysis. Dendrimer improves the tanning of hare skins, increasing the strength and quality of the leather without reducing its technological properties.