Functionalized Hyperbranched Aliphatic Polyester Polyols: Synthesis, Properties and Applications

Maksimov, A. F.; Kutyrev, Gennadii

doi:10.1007/s10118-022-2823-0

Cited by 5 publications

(8 citation statements)

References 105 publications

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“…In the FT-IR spectrum of complex (2), the band of C�S bond valent vibrations at 1241 cm −1 was shifted with a decrease in intensity to 1231 cm −1 , for complex (3) to 1236 cm −1 . 16 The disappearance of the S−H bond valence band in the region of 2630−2538 cm −1 was noted, which confirms the participation of both tautomeric forms of the ligand terminal groups in the coordination.…”

Section: ■ Results and Discussionmentioning

confidence: 71%

Hybrid Nanostructures of Hyperbranched Polyester Loaded with Gd(III) and Dy(III) Ions

Kutyreva,

Vagapova,

Maksimov

et al. 2024

ACS Appl. Polym. Mater.

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Hyperbranched polymers are successful nanoscale functional platforms for loading metal ions and creating promising nanomaterials for medicine. This work presents the synthesis of metal−polymer nanostructures based on a second generation hyperbranched polyester with eight terminal benzoylthiocarbamate (BTC) groups loaded with Gd(III) or Dy(III) ions. Their structure (Fourier transform infrared spectroscopy) and morphology (transmission electron microscopy), photophysical (ultraviolet−visible and luminescence spectroscopy), thermophysical, magnetic activity, relaxivity, and aggregation properties (nanoparticle tracking analysis) were studied. The formation of the metal−polymer complex is carried out by chelation of lanthanide ions −C�O and −C�S groups of the BTC fragment of polyester. Coordination units with composition Ln(III)-3BTC (Ln = Dy, Gd) were localized on the branched polymer platform. The load is three lanthanide ions per branched polyester polybenzoylthiocarbamate macromolecule. Logarithms of stability constants of complexes and composition of coordination polyhedron have been determined. The dysprosium complex is in a paramagnetic state with antiferromagnetic correlations, and the gadolinium complex is in a paramagnetic state. The relaxivity of the Dy(III) and Gd(III) complexes increased by 2.5 and 3 times, respectively, compared to their nitrates. An important achievement is the identification of rare-earth metal (REM)-controlled morphology and self-organization for Dy(III) and Gd(III) complexes with branched polyester polybenzoylthiocarbamate in solution and on the surface. Spherical nanostructures for the dysprosium complex and nanorods for the gadolinium complex were observed. Synthesized REM-loaded nanostructures with polyester polybenzoylthiocarbamates have low hemotoxicity and can be applied in biomedicine.

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Section: ■ Results and Discussionmentioning

confidence: 71%

Hybrid Nanostructures of Hyperbranched Polyester Loaded with Gd(III) and Dy(III) Ions

Kutyreva,

Vagapova,

Maksimov

et al. 2024

ACS Appl. Polym. Mater.

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“…4 The functional groups on the polyester backbone provide opportunities to further adjust the drug release kinetics and in vivo degradation behaviors as well as the conjugation of bioactive molecules, such as drugs, peptides, and proteins. [5][6][7][8][9][10] A variety of functional aliphatic polyesters containing different reactive groups have been successfully prepared, including halogen groups, [11][12][13][14] hydroxyl groups, 15,16 amino groups, 17 carboxylic groups, 18 and carbon-carbon double bonds. 19,20 Although it is possible to directly introduce functional groups into the backbone of commercial polyesters, such a post-modification strategy suffers from harsh conditions, possible chain scission and racemization.…”

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Chemoselective and controlled ring-opening copolymerization of biorenewable α-methylene-δ-valerolactone with ε-caprolactone toward functional copolyesters

et al. 2023

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“…One of the solutions is the search for new ligands for the chelation of lanthanide ions. The use of polymeric ligands for these purposes makes it possible to realize the effect of macromolecular stabilization and obtain more stable complexes [ 13 , 14 ]. The architecture of polymers and the nature of their functional groups are key factors in these developments.…”

Section: Introductionmentioning

confidence: 99%

“…These nanosized polyesters are industrially available, biodegradable, well-soluble in various polar solvents, and have low toxicity, and the reactive terminal hydroxyl groups can be easily modified to give them the desired set of properties. The introduction of coordinatively active functional groups made it possible to obtain polydentate ligands that form stable complexes with transition metal ions Co(II), Ni(II), and Cu(II) [ 13 ]. It has been shown that metal complexes of polyester polycarboxylates form tetrahedral and octahedral [ 15 , 16 ] coordination units and possess marked biological activity [ 15 , 17 ].…”

Section: Introductionmentioning

confidence: 99%

Hyperbranched Polyester Polyfumaratomaleate Doped with Gd(III) and Dy(III) Ions: Synthesis, Structure and Properties

et al. 2022

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For the first time, metal–polymer complexes have been synthesized using hyperbranched polyester polyfumaratomaleate as a matrix, the structure of which has been established by 1H NMR, IR, electron spectroscopy, and elemental analysis methods. The formation of complexes with Gd(III) and Dy(III) ions involving fumarate and maleate groups of the polyester was proved by IR and electron spectroscopy methods. It was established that the structure of the coordination units has the form of a square antiprism. The compositions and conditional logarithms of the stability constants of the complexes were determined. It was established that complexation with lanthanide ions promotes emission enhancement in the ligand.

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Functionalized Hyperbranched Aliphatic Polyester Polyols: Synthesis, Properties and Applications

Cited by 5 publications

References 105 publications

Hybrid Nanostructures of Hyperbranched Polyester Loaded with Gd(III) and Dy(III) Ions

Hybrid Nanostructures of Hyperbranched Polyester Loaded with Gd(III) and Dy(III) Ions

Chemoselective and controlled ring-opening copolymerization of biorenewable α-methylene-δ-valerolactone with ε-caprolactone toward functional copolyesters

Hyperbranched Polyester Polyfumaratomaleate Doped with Gd(III) and Dy(III) Ions: Synthesis, Structure and Properties

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