Atom transfer radical polymerization

Nature Reviews Methods Primers, Journal Year: 2025, Volume and Issue: 5(1)

Published: Jan. 9, 2025

Language: Английский

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Highly efficient dual photoredox/copper catalyzed atom transfer radical polymerization achieved through mechanism-driven photocatalyst design

Nature Communications, Journal Year: 2024, Volume and Issue: 15(1)

Published: June 17, 2024

Abstract Atom transfer radical polymerization (ATRP) with dual photoredox/copper catalysis combines the advantages of photo-ATRP and photoredox-mediated ATRP, utilizing visible light ensuring broad monomer scope solvent compatibility while minimizing side reactions. Despite its popularity, challenges include high photocatalyst (PC) loadings (10 to 1000 ppm), requiring additional purification increasing costs. In this study, we discover a PC that functions at sub-ppm level for ATRP through mechanism-driven design. Through studying mechanisms, find efficient polymerizations are driven by PCs whose ground state oxidation potential—responsible regeneration—play more important role than their excited reducing power, responsible initiation. This is verified screening varying redox potentials triplet generation capabilities. Based on these findings, identify highly PC, 4DCDP-IPN, featuring moderate power maximized potential. Employing 50 ppb, synthesize poly(methyl methacrylate) conversion, narrow molecular weight distribution, chain-end fidelity. system exhibits oxygen tolerance supports large-scale reactions under ambient conditions. Our systematic design, offer meaningful insights controlled metallaphotoredox-mediated syntheses beyond ATRP.

Language: Английский

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Molecularly imprinted polymer-based electrochemical sensors for monitoring the persistent organic pollutants chlorophenols

RSC Advances, Journal Year: 2024, Volume and Issue: 14(28), P. 20163 - 20181

Published: Jan. 1, 2024

Because of the serious risks they pose to environment and public health, chlorophenols (CPs), a typical class most persistent organic pollutants, have drawn increasing attention. Monitoring CPs effectively has become pressing difficult problem. The rapidly need for onsite real-time CP detection led consideration electrochemical sensing as workable solution. Molecularly imprinted polymer (MIP)-based emerged promising area environmental monitoring in response this analytical MIPs, conjunction with miniature transducers, provide opportunity detect target analytes situ. These devices advantages great chemical physical stability, cheap production costs, good selectivity, quick times. Most studies suggest that these sensors use nanoparticles improve their properties, especially sensitivity. Furthermore, successfully used real water samples without time-consuming pretreatment procedures. This article provides an overview MIP-based reported samples. To obtain highest sensitivity, special is given fabrication sensors, which includes various functional monomers, platforms, materials. Several other parameters are also discussed, including linear concentration range, limit detection, types were examined.

Language: Английский

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GOX mediated oxygen tolerance ATRP for detection of esophageal cancer biomarker miRNA-144

Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: 495, P. 153543 - 153543

Published: June 27, 2024

Language: Английский

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Photo-crosslinked Diels–Alder and thiol–ene polymer networks

RSC Advances, Journal Year: 2025, Volume and Issue: 15(1), P. 312 - 322

Published: Jan. 1, 2025

Dual UV-crosslinking was done with furan and norbornene-functional polymers, synthesized by ICAR ATRP, via Diels–Alder thiol–ene click chemistries.

Language: Английский

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N-substituted 1,8-naphtalene imide-based (macro)initiator for investigation of photochemically induced ATRP process

European Polymer Journal, Journal Year: 2025, Volume and Issue: unknown, P. 113789 - 113789

Published: Feb. 1, 2025

Language: Английский

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High efficient mechanically induced atom transfer radical polymerization in aqueous media facilitated by piezoelectric heterostructures

European Polymer Journal, Journal Year: 2025, Volume and Issue: unknown, P. 113837 - 113837

Published: Feb. 1, 2025

Language: Английский

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Polystyrene–Br End-Group Modification via Electrolysis: Adjusting Hydrogenation vs Coupling Selectivity

ACS Macro Letters, Journal Year: 2025, Volume and Issue: unknown

Published: March 7, 2025

Atom transfer radical polymerization (ATRP) enables the precise synthesis of polymers with well-defined architectures, controlled molecular weights, and low dispersity. However, halogen end-groups inherent to ATRP can pose challenges due their chemical reactivity thermal instability. To address these issues, various strategies, including photochemical methods, have been developed for chain-end modification. This study introduces an electrochemical approach selectively reduce in polymers. Using glassy carbon (GC) silver electrodes, reductive cleavage C-Br bromine-capped polystyrene was investigated. Cyclic voltammetry revealed that polystyrene-bromide undergoes electron accompanied by concerted removal functionality. The Ag electrode facilitated electrocatalysis enhanced activity. Controlled-potential electrolysis demonstrated reaction conditions, particularly choice proton donors, significantly influence product distribution, enabling selective hydrogenation or dimerization chain ends. work advances understanding strategies tailoring polymer end-group

Language: Английский

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Tailoring polymer architectures to drive molecular sieving in protein-polymer hybrids

Sustainable Chemistry and Pharmacy, Journal Year: 2025, Volume and Issue: 45, P. 101988 - 101988

Published: March 14, 2025

Language: Английский

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The future of polymer brushes

European Polymer Journal, Journal Year: 2025, Volume and Issue: unknown, P. 113927 - 113927

Published: April 1, 2025

Language: Английский

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