Riboflavin‐Catalyzed Photoinduced Atom Transfer Radical Polymerization DOI Creative Commons

Halil Ibrahim Coskun,

Thomas Votruba‐Drzal,

Hanshu Wu

et al.

Macromolecular Chemistry and Physics, Journal Year: 2024, Volume and Issue: unknown

Published: Oct. 20, 2024

Abstract The photoATRP of methyl acrylate (MA) is investigated using riboflavin (RF) and CuBr 2 /Me 6 TREN as a dual catalyst system under green LED irradiation (λ ≈ 525 nm). Both RF enhanced oxygen tolerance, enabling effective ATRP in the presence residual oxygen. High molar mass polymers (up to M n 129 000 g·mol −1 ) with low dispersity ( Đ ≤ 1.16) are prepared, chain‐end fidelity confirmed through successful chain extension. molecular masses obtained polymer increased linearly conversion showed high initiation efficiency. Mechanistic studies by laser flash photolysis reveal that predominant activator generation mechanism reductive quenching Me (83%, [CuBr ]/[Me TREN] = 1/3 condition), supported polymerization kinetics thermodynamic calculations.

Language: Английский

Oxygen, Light, and Mechanical Force Mediated Radical Polymerization Toward Precision Polymer Synthesis DOI
Zhujun Huang, Jin Dong, Kaiwen Liu

et al.

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

Published: Jan. 1, 2025

This article highlights the advancements in controlled radical polymerization facilitated by three external regulations of oxygen, light, and mechanical force, outlines future directions polymerization.

Language: Английский

Citations

3
Oxygen-Driven Atom Transfer Radical Polymerization DOI

Yuxuan Du,

Zhe Chen,

Zhikang Xie

et al.

Journal of the American Chemical Society, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 16, 2025

In traditional atom transfer radical polymerization (ATRP), oxygen must be meticulously eliminated due to its propensity quench species and halt the process. Additionally, oxidizes lower-valent Cu catalyst, compromising ability activate alkyl halides propagate polymerization. this study, we present an oxygen-driven ATRP utilizing alkylborane compounds, a method that not only circumvents need for stringent removal but also exploits as essential cofactor promote This approach exhibits broad compatibility in organic or aqueous media, yielding well-defined polymers with low dispersity (Đ 1.11) molecular weights closely aligned theoretical values. Triethylborane (Et3B) air-stable triethylborane-amine complex (Et3B-DMAP) facilitate controlled under open-to-air conditions, demonstrating efficiency across wide range of monomers. Moreover, technique enables successful synthesis protein–polymer conjugates supports surface modifications nanoparticles silicon wafers aerobic conditions. represents robust versatile platform precision far-reaching implications materials science, biomedicine, advanced engineering.

Language: Английский

Citations

3
Entropy spontaneous ratiometric electrochemical aptasensor based on polymerization and AuNPs signal amplification for Acetamiprid residue analysis DOI Creative Commons
Wei‐Ming Li,

Yuzhen Jia,

Kunyilan Chen

et al.

Research Square (Research Square), Journal Year: 2025, Volume and Issue: unknown

Published: March 26, 2025

Abstract Acetamiprid (ACE), a next-generation chlorinated neonicotinoid insecticide, has been extensively employed for pest control. However, its excessive residues in food and the environment have raised significant concerns regarding human health. To address need simple, accurate, efficient ACE detection method, this study developed ratiometric electrochemical aptasensor utilizing dual signal amplification strategy involving atom transfer radical polymerization (ATRP) gold nanoparticles (AuNPs). Methylene blue (MB) served as internal reference signal, which was attached to aptamer-DNA1 (dsDNA) through electrostatic adsorption intercalation. Ferrocenyl methyl methacrylate (FMMA) polymerized into long chains via ATRP, generating significantly amplified electrical compared that of monomeric FMMA. AuNPs, known their bioconjugability, were linked DNA2 (AuNPs-DNA2), enhancing loading capacity expanding ATRP reaction sites. In presence ACE, MB decreased while FMMA polymer increased, achieving with limit (LOD) 19.26 pg/mL. This not only enhances selectivity but also mitigates influence background currents, offering novel effective approach real-world sample analysis.

Language: Английский

Citations

0
Visible-light-driven rhodamine 6G mediated in situ poly-ferrocene strategy for highly sensitive quantification of esophageal cancer biomarkers DOI

Shuaibing Yu,

Qinyuan Xu,

Fenghong Zhang

et al.

Talanta, Journal Year: 2025, Volume and Issue: 295, P. 128291 - 128291

Published: May 8, 2025

Language: Английский

Citations

0
Riboflavin‐Catalyzed Photoinduced Atom Transfer Radical Polymerization DOI Creative Commons

Halil Ibrahim Coskun,

Thomas Votruba‐Drzal,

Hanshu Wu

et al.

Macromolecular Chemistry and Physics, Journal Year: 2024, Volume and Issue: unknown

Published: Oct. 20, 2024

Abstract The photoATRP of methyl acrylate (MA) is investigated using riboflavin (RF) and CuBr 2 /Me 6 TREN as a dual catalyst system under green LED irradiation (λ ≈ 525 nm). Both RF enhanced oxygen tolerance, enabling effective ATRP in the presence residual oxygen. High molar mass polymers (up to M n 129 000 g·mol −1 ) with low dispersity ( Đ ≤ 1.16) are prepared, chain‐end fidelity confirmed through successful chain extension. molecular masses obtained polymer increased linearly conversion showed high initiation efficiency. Mechanistic studies by laser flash photolysis reveal that predominant activator generation mechanism reductive quenching Me (83%, [CuBr ]/[Me TREN] = 1/3 condition), supported polymerization kinetics thermodynamic calculations.

Language: Английский

Citations

2