Elemental Selenium-Derived Poly(sulfide selenide)s: A Platform of Photodegradable and Electrochemical Responsive Polymers,Macromolecules

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Elemental Selenium-Derived Poly(sulfide selenide)s: A Platform of Photodegradable and Electrochemical Responsive Polymers
Macromolecules ( IF 5.1 ) Pub Date : 2024-02-02 , DOI: 10.1021/acs.macromol.3c01628
Tian-Jun Yue ₁ , Xiang-Yu Fu ₁ , Ji Zhang ₁ , Yong-Gui Zhou ₂ , Wei-Min Ren ₁ , Xiao-Bing Lu ₁

Affiliation

Selenium-containing polymers have numerous attractive properties, such as light response behaviors, biocompatibilities, and heavy-metal-ion adhesive ability. However, the lack of efficient strategies for constructing selenium-containing polymers limits their development. Herein, a facile but efficient strategy is proposed for synthesizing poly(sulfide selenide)s directly from elemental selenium and episulfides in the presence of an organocatalyst system. This strategy affords diverse poly(sulfide selenide)s with high sulfide–selenide linkage selectivity (>99%). The mechanism exploration reveals that the sulfide–selenide linkage selectivity is affected by the nucleophilicity of the organic bases: the organic base with high nucleophilicity leads to the high sulfide–selenide linkage selectivity. Notably, the poly(sulfide selenide)s exhibit excellent photodegradable nature. Furthermore, the excellent electrochemical properties of these poly(sulfide selenide)s enable their application in electrochemical CO₂ capture. The high monomer compatibility of this method leads to a series of poly(sulfide selenide)s with diverse structures and thus various thermal and optical performances.

中文翻译：

元素硒衍生的聚（硫化物硒化物）：光降解和电化学响应聚合物的平台

含硒聚合物具有许多吸引人的特性，例如光响应行为、生物相容性和重金属离子粘附能力。然而，缺乏构建含硒聚合物的有效策略限制了它们的发展。在此，提出了一种简便但有效的策略，用于在有机催化剂体系存在下直接从元素硒和环硫化物合成聚（硫化物硒化物）。该策略提供了具有高硫化物-硒化物键选择性（> 99％）的多种聚（硫化物硒化物）。机理探索表明，硫化物-硒化物键合选择性受有机碱的亲核性影响：亲核性高的有机碱导致硫化物-硒化物键合选择性高。值得注意的是，聚（硫化物硒化物）表现出优异的光降解性质。此外，这些聚（硫化物硒化物）优异的电化学性能使其能够在电化学CO ₂捕获中得到应用。该方法的高单体相容性导致一系列具有不同结构的聚（硫化物硒化物），从而具有不同的热和光学性能。

更新日期：2024-02-02

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