Surface-Induced ARGET ATRP for Silicon Nanoparticles with Fluorescent Polymer Brushes
Surface-Induced ARGET ATRP for Silicon Nanoparticles with Fluorescent Polymer Brushes
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使用荧光聚合物刷对硅纳米颗粒进行表面诱导 ARGET ATRP
DOI：
10.3390/polym11071228
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发表时间：
2019-07
期刊：
影响因子：
5
通讯作者：
Guang Li
中科院分区：
文献类型：
--
作者：
Chunna Yan;Lin Xu;Qing-Di Liu;Wei Zhang;Rui Jia;Cheng-Zhi Liu;Shuang-Shuang Wang;Li-Ping Wang;Guang Li
明确定义的聚合物刷连接到纳米粒子提供了一个优雅的机会，表面改性，因为它们具有优异的机械稳定性，功能的多功能性，高接枝密度以及可控的表面性能。本研究旨在制备在不同溶剂中具有良好分散性的杂化材料，并赋予其一定的荧光特性。通过电子转移原子转移自由基聚合（SI-ARGET ATRP）再生表面引发剂，合成了结构明确的聚苯乙烯-聚甲基丙烯酸羟乙酯-聚甲基丙烯酸羟乙酯-罗丹明B接枝二氧化硅纳米粒子（SNPs-g-PS-b B-PHEMA-co-PHEMA-Rh B）杂化材料。首先用3-氨丙基三乙氧基硅烷（KH-550）对SNPs进行表面修饰，然后通过酰溴和胺基的酯化反应将引发剂2-溴异丁酰溴（BIBB）连接到SNPs表面。合成的引发剂（SNPs-Br）进一步用于苯乙烯（St）、甲基丙烯酸羟乙酯（HEMA）和甲基丙烯酸羟乙酯-罗丹明B（HEMA-Rh B）的SI-ARGET ATRP。结果表明，SI-ARGET ATRP引发剂已固定在SNPs表面，Br原子位于聚合物主链末端，聚合过程具有可控/“活性”聚合特征。SNPs-g-PS-b-PHEMA-co-PHEMA-RhB杂化材料显示出良好的荧光性能，在水和乙醇中具有良好的分散性，但在四氢呋喃中聚集。本研究表明，SI-ARGET ATRP提供了一种独特的方法来调整二氧化硅纳米粒子表面的聚合物刷结构，并进一步拓宽了SI-ARGET ATRP的应用。
Well-defined polymer brushes attached to nanoparticles offer an elegant opportunity for surface modification because of their excellent mechanical stability, functional versatility, high graft density as well as controllability of surface properties. This study aimed to prepare hybrid materials with good dispersion in different solvents, and to endow this material with certain fluorescence characteristics. Well-defined diblock copolymers poly (styrene)-b-poly (hydroxyethyl methyl acrylate)–co-poly (hydroxyethyl methyl acrylate- rhodamine B) grafted silica nanoparticles (SNPs-g-PS-b-PHEMA-co-PHEMA-RhB) hybrid materials were synthesized via surface-initiated activators regenerated by electron transfer atom transfer radical polymerization (SI-ARGET ATRP). The SNPs surfaces were modified by 3-aminopropyltriethoxysilane (KH-550) firstly, then the initiators 2-Bromoisobutyryl bromide (BIBB) was attached to SNPs surfaces through the esterification of acyl bromide groups and amidogen groups. The synthetic initiators (SNPs-Br) were further used for the SI-ARGET ATRP of styrene (St), hydroxyethyl methyl acrylate (HEMA) and hydroxyethyl methyl acrylate-rhodamine B (HEMA-RhB). The results indicated that the SI-ARGET ATRP initiator had been immobilized onto SNPs surfaces, the Br atom have located at the end of the main polymer chains, and the polymerization process possessed the characteristic of controlled/“living” polymerization. The SNPs-g-PS-b-PHEMA-co-PHEMA-RhB hybrid materials show good fluorescence performance and good dispersion in water and EtOH but aggregated in THF. This study demonstrates that the SI-ARGET ATRP provided a unique way to tune the polymer brushes structure on silica nanoparticles surface and further broaden the application of SI-ARGET ATRP.
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影响因子：
9.5
作者：
Shuwen Zhao;Ying Tao;Yunxiang Chen;Yijie Zhou;Rong Li;L. Xie;Aibin Huang;P. Jin;Shidong Ji-Shidon
通讯作者：
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影响因子：
6.9
作者：
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通讯作者：
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影响因子：
5.2
作者：
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通讯作者：
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影响因子：
4.6
作者：
Jamshidi, Ali;Maleki, Behrooz;Tayebee, Reza
通讯作者：
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影响因子：
6
作者：
Hanène Salmi-Mani;Gabriel Terreros;Nadine Barroca-Aubry;C. Aymes-Chodur;C. Regeard;P. Roger
通讯作者：
Hanène Salmi-Mani;Gabriel Terreros;Nadine Barroca-Aubry;C. Aymes-Chodur;C. Regeard;P. Roger