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Diselenide-Linked Polymers under Sonication
ACS Macro Letters ( IF 5.1 ) Pub Date : 2020-10-19 , DOI: 10.1021/acsmacrolett.0c00585
Qin Wu 1 , Yuan Yuan 1 , Feiyi Chen 1 , Chenxing Sun 2 , Huaping Xu 2 , Yulan Chen 1
Affiliation  

A series of Se–Se-linked polystyrenes have been synthesized and subjected to pulse sonication. Comprehensive investigations based on GPC measurements, derivatization experiments, and EPR spectroscopy verify the sonication-induced bond scission and metathesis of these polymeric diselenides. The metathesis kinetics and energy conversion efficiency by different stimuli including heating, light, and sonication are compared, which demonstrate that sonication can offer an alternative way to break the Se–Se bond and realize selective metathesis reactions between diselenide-linked polymers and small molecules. This fundamental study on sonochemistry of diselenide-centered polymers expands our knowledge of diselenide chemistry and mechanochemistry of dynamic covalent mechanophores, which may greatly advance the applications of diselenide-containing polymers.

中文翻译:

超声处理下的二硒键聚合物

已经合成了一系列 Se-Se 连接的聚苯乙烯并进行了脉冲超声处理。基于 GPC 测量、衍生化实验和 EPR 光谱的综合研究证实了这些聚合物二硒化物的超声诱导键断裂和复分解。比较了不同刺激(包括加热、光和超声处理)的复分解动力学和能量转换效率,这表明超声处理可以提供一种替代方法来破坏 Se-Se 键并实现二硒化物连接的聚合物和小分子之间的选择性复分解反应。这项关于以二硒化物为中心的聚合物的声化学的基础研究扩展了我们对二硒化物化学和动态共价机械载体的机械化学的认识,
更新日期:2020-11-17
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