Effect of Polymerization Components on Oxygen-Tolerant Photo-ATRP,ACS Macro Letters

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Effect of Polymerization Components on Oxygen-Tolerant Photo-ATRP
ACS Macro Letters ( IF 5.1 ) Pub Date : 2019-11-13 , DOI: 10.1021/acsmacrolett.9b00855
Manon Rolland ₁ , Richard Whitfield ₁ , Daniel Messmer ₁ , Kostas Parkatzidis ₁ , Nghia P Truong ₁ , Athina Anastasaki ₁

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Photo-ATRP has recently emerged as a powerful technique that allows for oxygen-tolerant polymerizations and the preparation of polymers with low dispersity and high end-group fidelity. However, the effect of various photo-ATRP components on oxygen consumption and polymerization remains elusive. Herein, we employ an in situ oxygen probe and UV–vis spectroscopy to elucidate the effects of ligand, initiator, monomer, and solvent on oxygen consumption. We found that the choice of photo-ATRP components significantly impacts the rate at which the oxygen is consumed and can subsequently affect both the polymerization time and the dispersity of the resulting polymer. Importantly, we discovered that using the inexpensive ligand TREN results in the fastest oxygen consumption and shortest polymerization time, even though no appreciable reduction of CuBr₂ is observed. This work provides insight into oxygen consumption in photo-ATRP and serves as a guideline to the judicious selection of photo-ATRP components for the preparation of well-defined polymers.

中文翻译：

聚合组分对耐氧光-ATRP的影响

Photo-ATRP 最近已成为一种强大的技术，可用于耐氧聚合和制备具有低分散性和高端基保真度的聚合物。然而，各种光-ATRP 组分对氧消耗和聚合的影响仍然难以捉摸。在此，我们采用原位氧探针和紫外-可见光谱来阐明配体、引发剂、单体和溶剂对耗氧量的影响。我们发现，光-ATRP 组分的选择会显着影响氧气消耗的速率，进而影响聚合时间和所得聚合物的分散性。重要的是，我们发现使用廉价的配体 TREN 会导致最快的氧气消耗和最短的聚合时间，即使 CuBr 没有明显减少观察到_{2 。}这项工作提供了对光-ATRP 耗氧量的深入了解，并为明智地选择光-ATRP 组分以制备定义明确的聚合物提供了指导。

更新日期：2019-11-14

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