Marrying mussel inspired chemistry with SET-LRP: A novel strategy for surface functionalization of carbon nanotubes
Marrying mussel inspired chemistry with SET-LRP: A novel strategy for surface functionalization of carbon nanotubes
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将贻贝启发的化学与 SET-LRP 相结合：碳纳米管表面功能化的新策略
DOI：
10.1002/pola.27638
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发表时间：
2015
影响因子：
--
通讯作者：
Wei Yen
中科院分区：
文献类型：
--
作者：
Tian Jianwen;Xu Dazhuang;Liu Meiying;Deng Fengjie;Wan Qing;Li Zhen;Wang Ke;He Xiaohui;Zhang Xiaoyong;Wei Yen
通过贻贝启发的化学反应和表面引发的单电子转移活性自由基聚合（SET-LRP）的结合，实现了碳纳米管（CNT）与温敏聚合物的表面功能化。在此过程中，碳纳米管首先与聚多巴胺（PDA）通过自聚合在一个相当温和的条件下进行包覆。然后，PDA功能化的碳纳米管带有氨基和羟基基团进一步与溴异丁酰溴反应。最后，通过SET‐LRP在CNT上引入温度响应聚合物聚（N-异丙基丙烯酰胺）（PNIPAM）。通过一系列表征技术证明了CNT‐PDA‐PNIPAM的成功表面改性。所得CNT-PDA-PNIPAM在水性和有机溶剂中均显示出显著的增溶作用。更重要的是，这些CNT-聚合物纳米复合材料显示出明显的热响应行为，这是由于用PNIPAM表面包覆CNT。与以往的方法相比，该方法不需要碳纳米管的氧化引入功能基团来固定聚合引发剂。更重要的是，这种方法也可以用于制造许多其他聚合物纳米复合材料，因为PDA对各种材料的强大和通用的粘合剂。因此，通过将贻贝启发的化学与SET‐LRP结合的新策略应该是一种简单，通用和有效的表面功能化方法。© 2015威利期刊公司. J.波利姆科学，部分A：聚合物。Chem.2015，53，1872-1879
Surface functionalization of carbon nanotubes (CNTs) with a thermo responsive polymer was achieved via combination of mussel inspired chemistry and surface initiated single electron transfer living radical polymerization (SET‐LRP). In this procedure, CNTs were first coated with polydopamine (PDA) through self polymerization under a rather mild condition. And then PDA functionalized CNTs bearing with amino and hydroxyl groups were further reacted with bromo isobutyryl bromide. Finally, a thermo responsive polymer poly(N‐isopropylacrylamide) (PNIPAM) was introduced on the CNTs via SET‐LRP. The successful surface modification of CNT‐PDA‐PNIPAM was evidenced by a series of characterization techniques. The resulting CNT‐PDA‐PNIPAM showed significant enhancement of dispersibility in both aqueous and organic solvents. More importantly, these CNT‐polymer nanocomposites showed obvious thermo responsive behavior due to the surface coating CNTs with PNIPAM. As compared with previous methods, this method is not required oxidation of CNTs to introduce funcitonal groups for immobilization of the polymerization initiators. More importantly, this method could also be utilized for fabricating many other polymer nanocomposites because of the strong and universal adhesive of PDA to various materials. It is therefore, the novel strategy via marrying mussel inspired chemistry with SET‐LRP should be a simple, general and effective method for surface functionalization. © 2015 Wiley Periodicals, Inc. J. Polym. Sci., Part A: Polym. Chem.2015,53, 1872–1879