Readily Degradable and Recyclable High Molecular Weight Thiosalicylic Acid-based Copolyesters

Chinese Journal of Polymer Science, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 25, 2025

Language: Английский

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Facile Synthesis of Recyclable Polythioimidocarbonates via Aromatization-driven Alternating Copolymerization of para-Quinone Methide and Isothiocyanates

Chemical Science, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 1, 2025

For the first time, aromatization-driven alternating copolymerization of p -QM with isothiocyanates is explored under mild conditions.

Language: Английский

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Cyclic thioanhydride/episulfide copolymerizations catalyzed by bipyridine-bisphenolate aluminum/onium pair: approach to structurally and functionally diverse poly(thioester)s

Polymer Chemistry, Journal Year: 2024, Volume and Issue: 15(24), P. 2502 - 2512

Published: Jan. 1, 2024

Structurally and functionally diverse poly(thioester)s were readily synthesized via ring-opening copolymerization of cyclic thioanhydrides episulfides catalyzed by a bipyridine-bisphenolate aluminum/onium pair.

Language: Английский

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ortho-Aromatic Polyamides by Ring-opening Polymerization of N-carboxyanhydrides

Published: Aug. 16, 2024

We report the ring-opening polymerization of N-alkylated aromatic six-membered ring N-carboxyanhydrides (6-NCA-R) catalyzed by transition metal Schiff base complexes in presence a base. This system allows facile synthesis ortho-aromatic polyamides with high molecular weights via chain-growth polymerization. A mechanism is proposed based on results polymerizations performed under various reaction conditions. Copolymerization 6-NCA-R heterocyclic monomers to prepare heteroatom (N, O, and S) containing copolymers. The thermal properties polymers different N-alkyl side chains were investigated thermogravimetric analysis, differential scanning calorimetry, powder X-ray diffraction.

Language: Английский

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Easy access to high-melting sulfurated copolymers and their self-assembling block polymers from phenylisothiocyanate and oxetane

Published: Feb. 1, 2024

Although sulfurated polymers promise unique properties, their controlled synthesis, particularly when it comes to complex and functional architectures, remains challenging. Here, we show that the copolymerization of oxetane phenyl isothiocyanates quantitatively forms polythioimidocarbonates with narrow molecular weight distributions (Mn = 5–80 kg/mol Đ ≤ 1.2; Mn,max 124 kg/mol). Studying thermal properties through a specially developed self-nucleation procedure, high melting points up 181 ºC are revealed for which π-stacking substituents kinetically linkage selectivity key factors. Tolerance macro-chain transfer agents propagation allows synthesis double crystalline amphiphilic block copolymers enables application in crystallization-driven self-assembly, an unventured territory copolymers.

Language: Английский

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Solubility-Equilibrium-Assisted Kinetic Resolution Polymerization toward Isotactic Polyesters Containing Axial Chirality

Journal of the American Chemical Society, Journal Year: 2024, Volume and Issue: unknown

Published: Dec. 16, 2024

High-level control over polymer stereochemistry leverages the fine-tuning of material properties, but it is still a formidable challenge in synthetic chemistry. Herein we prepared new class salph yttrium catalysts bearing axially chiral binaphthyl moieties for stereocontrolled polymerization

Language: Английский

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Highly Regioselective Ring-Opening Polymerization of an Asymmetric Diester

Macromolecules, Journal Year: 2024, Volume and Issue: unknown

Published: Dec. 9, 2024

Language: Английский

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