Three-Step Synthesis of a Less-Aggregated Water-Soluble Poly(p-phenylene ethynylene) with Meta Side Chains via Palladium/Norbornene Cooperative Catalysis,Macromolecules

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Three-Step Synthesis of a Less-Aggregated Water-Soluble Poly(p-phenylene ethynylene) with Meta Side Chains via Palladium/Norbornene Cooperative Catalysis
Macromolecules ( IF 5.1 ) Pub Date : 2019-02-08 00:00:00 , DOI: 10.1021/acs.macromol.8b02645
Ki-Young Yoon ₁ , Yazhen Xue _{1,

2} , Guangbin Dong ₁

Affiliation

A three-step preparation of a highly water-soluble poly(p-phenylene ethynylene) (PPE) from commercially available starting materials is disclosed. The palladium/norbornene-catalyzed AB–C-type polymerization has been developed, which enables installation of two piperazine meta side chains concurrently with the construction of the PPE backbone. The capability for double protonation of the piperazine moiety improves water solubility of this material. Compared to the PPE containing para side chains, the meta side chains reduce interchain aggregation and significantly enhance solubility and fluorescent quantum yields of the polymer.

中文翻译：

三步一个较少聚集的水溶性聚合成（p亚苯基亚乙炔基）与元经由钯/降冰片烯协同催化侧链

公开了一种由市售起始原料制备高度水溶性的聚（对亚苯基亚乙炔基）（PPE）的三步法。已经开发了钯/降冰片烯催化的AB–C型聚合反应，该反应使得在安装PPE主链的同时可以安装两个哌嗪间位侧链。哌嗪部分的双质子化能力改善了该材料的水溶性。与包含对位侧链的PPE相比，间位侧链减少了链间聚集并显着提高了聚合物的溶解度和荧光量子产率。

更新日期：2019-02-08

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