Single-Chain Janus Nanoparticle by Metallic Complexation,Macromolecules

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Single-Chain Janus Nanoparticle by Metallic Complexation
Macromolecules ( IF 5.1 ) Pub Date : 2020-01-21 , DOI: 10.1021/acs.macromol.9b02388
Dao Xiang _{1,

2} , Bingyin Jiang ₃ , Fuxin Liang ₃ , Litang Yan ₃ , Zhenzhong Yang _{1,

3}

Affiliation

Single-chain Janus nanoparticle of the example polymer polystyrene-block-poly(2-vinylpyridine)-block-polyethylene oxide (PS-b-P2VP-b-PEO) was achieved by intramolecular crosslinking via complexation of P2VP with cobalt octacarbonyl, while the metallic complex was incorporated within the crosslinked core. It is crucial to introduce electrostatic interaction along the chain by pretreatment and thus ensure the intramolecular crosslinking in concentrated solutions, for example, 30 mg/mL. After thermolysis in the dispersion, the complex is decomposed achieving cobalt within the P2VP core. A magnetic responsive single-chain Janus composite nanoparticle was derived with the P2VP/Co core conjugated with PS and PEO single chains onto the opposite sides. The Janus composite nanoparticle displays highly catalytic activity and magnetic responsive performance from the metallic cobalt and interfacial activity from the PS and PEO single chains. A highly efficient catalytic reduction of nitroaromatic compounds at emulsion interfaces was demonstrated thereby, which was easily recycled with a magnet.

中文翻译：

金属络合单链Janus纳米粒子

的示例聚合物聚苯乙烯的单链的Janus纳米粒子块- -聚（2-乙烯基吡啶）嵌段-聚环氧乙烷（PS- b -P2VP- b-PEO）是通过P2VP与八羰基钴的络合通过分子内交联而实现的，而金属络合物则被掺入了交联的核中。至关重要的是通过预处理沿链引入静电相互作用，从而确保在浓溶液中（例如30 mg / mL）进行分子内交联。在分散体中热解后，复合物被分解，从而在P2VP内核中形成钴。磁性响应单链Janus复合纳米颗粒的P2VP / Co核心与PS和PEO单链共轭到相对侧。Janus复合纳米颗粒显示出金属钴的高催化活性和磁响应性能，以及PS和PEO单链的界面活性。

更新日期：2020-01-22

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