Uniform Polymer Microspheres by Photoinduced Metal-Free Atom Transfer Radical Precipitation Polymerization.

IF 4.2 3区 化学 Q2 POLYMER SCIENCE Macromolecular Rapid Communications Pub Date : 2024-11-05 DOI:10.1002/marc.202400502
Tugrul Cem Bicak, Huiyin Liu, Karsten Haupt, Carlo Gonzato, Jérôme Fresnais, Christine Ménager, Louis Fensterbank, Cyril Ollivier, Nébéwia Griffete
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Abstract

Herein, a photoinduced method is introduced for the synthesis of highly cross-linked and uniform polymer microspheres by atom transfer radical polymerization (ATRP) at room temperature and in the absence of stabilizers or surfactants. Uniform particles are obtained at monomer concentrations as high as 10% (by volume), with polymers being exempt from contamination by residual transition metal catalysts, thereby overcoming the two major longstanding problems associated with thermally initiated ATRP-mediated precipitation polymerization. Moreover, the obtained particles have also immobilized ATRP initiators on their surface, which directly enables the controlled growth of densely grafted polymer layers with adjustable thickness and a well-defined chemical composition. The method is then employed successfully for the synthesis of molecularly imprinted polymer microspheres.

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通过光诱导无金属原子转移自由基沉淀聚合技术制备均匀聚合物微球。
本文介绍了一种光诱导方法,用于在室温、无稳定剂或表面活性剂的条件下,通过原子转移自由基聚合(ATRP)合成高度交联和均匀的聚合物微球。在单体浓度高达 10%(体积比)的情况下就能获得均匀的颗粒,聚合物不会受到残留过渡金属催化剂的污染,从而克服了与热引发 ATRP 介导的沉淀聚合相关的两大长期存在的问题。此外,所获得的颗粒表面还固定了 ATRP 起始剂,这就直接实现了厚度可调、化学成分明确的高密度接枝聚合物层的可控生长。该方法随后被成功用于合成分子印迹聚合物微球。
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来源期刊
Macromolecular Rapid Communications
Macromolecular Rapid Communications 工程技术-高分子科学
CiteScore
7.70
自引率
6.50%
发文量
477
审稿时长
1.4 months
期刊介绍: Macromolecular Rapid Communications publishes original research in polymer science, ranging from chemistry and physics of polymers to polymers in materials science and life sciences.
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