Temperature‐Selective Dual Radical Generation from Alkyl Diiodide: Applications to Synthesis of Asymmetric CABC Multi‐Block Copolymers and Their Unique Assembly Structures,Angewandte Chemie International Edition

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Temperature‐Selective Dual Radical Generation from Alkyl Diiodide: Applications to Synthesis of Asymmetric CABC Multi‐Block Copolymers and Their Unique Assembly Structures
Angewandte Chemie International Edition ( IF 16.1 ) Pub Date : 2018-01-16 , DOI: 10.1002/anie.201710964
Jie Zheng ₁ , Chen-Gang Wang ₁ , Yu Yamaguchi ₂ , Michihiko Miyamoto ₂ , Atsushi Goto ₁

Affiliation

Temperature‐selective radical generation from a newly designed alkyl diiodide (I−R²−R¹−I) was studied. R¹−I and I−R² had different reactivities for generating alkyl radicals in the presence of a tetraoctylammonium iodide (ONI) catalyst. Taking advantage of the temperature selectivity, we used the alkyl diiodide as a dual initiator in ONI‐catalyzed living radical polymerization to uniquely synthesize CABC non‐symmetric multi‐block copolymers. Because of their non‐symmetric structure, CABC multi‐block copolymers form unique assemblies, that is, Janus‐type particles with hetero‐segment coronas and flower‐like particles with hetero‐segment petals.

中文翻译：

烷基二碘化物的温度选择性双自由基生成：在不对称CABC多嵌段共聚物及其独特组装结构合成中的应用

研究了从新设计的烷基二碘（IR ² -R ¹ -I）生成温度选择性自由基的方法。在碘化四辛基铵（ONI）催化剂的存在下，R ¹ -I和IR ²具有不同的反应活性以产生烷基。利用温度选择性，我们将烷基二碘化物用作ONI催化的活性自由基聚合中的双重引发剂，以独特的方式合成CABC非对称多嵌段共聚物。由于其不对称结构，CABC多嵌段共聚物形成独特的组装体，即具有杂段电晕的Janus型颗粒和具有杂段花瓣的花状颗粒。

更新日期：2018-01-16

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