Surface-Initiated Photoinduced ATRP: Mechanism, Oxygen Tolerance, and Temporal Control during the Synthesis of Polymer Brushes,Macromolecules

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Surface-Initiated Photoinduced ATRP: Mechanism, Oxygen Tolerance, and Temporal Control during the Synthesis of Polymer Brushes
Macromolecules ( IF 5.1 ) Pub Date : 2020-04-14 , DOI: 10.1021/acs.macromol.0c00333
Wenqing Yan ₁ , Sajjad Dadashi-Silab ₂ , Krzysztof Matyjaszewski ₂ , Nicholas D. Spencer ₁ , Edmondo M. Benetti _{1,

3}

Affiliation

Surface-initiated, photoinduced atom transfer radical polymerization (SI-photoATRP) enables the controlled and rapid synthesis of compositionally diverse polymer brushes over large areas by employing very small reaction volumes under ambient conditions and without the need for prior deoxygenation of monomer mixtures. The concentration of copper species and the type and content of amine-based ligands determine the mechanism of SI-photoATRP, regulate the kinetics of polymer-brush growth, and govern the tolerance of this polymer-grafting method toward oxygen. Despite mechanistic analogies with the corresponding solution processes, the intrinsic, highly confined nature of SI-photoATRP leads to significant differences from polymerizations within homogeneous systems. This is especially important to attain controlled/living polymerization and temporal control over polymer-brush growth by using UV light as a trigger.

中文翻译：

表面引发的光诱导ATRP：机理，耐氧性和聚合物刷合成过程中的时间控制。

表面引发的光诱导原子转移自由基聚合（SI-photoATRP）通过在环境条件下采用非常小的反应体积，并且无需事先进行单体混合物的脱氧反应，就可以在大面积上控制且快速地合成组成多样的聚合物刷。铜种类的浓度以及胺基配体的类型和含量决定了SI-photoATRP的机理，调节了聚合物刷生长的动力学，并控制了该聚合物接枝方法对氧气的耐受性。尽管与相应的溶液过程具有类似的机理，但SI-photoATRP固有的，高度局限的性质导致其与均相系统中的聚合反应存在显着差异。

更新日期：2020-04-14

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