期刊
JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY
卷 50, 期 21, 页码 4451-4458出版社
WILEY
DOI: 10.1002/pola.26259
关键词
graphene oxide; nanocomposites; PNIPAM; single electron transfer-living radical polymerization (SET-LRP); synthesis
资金
- National Natural Science Foundation of China [20904065, 21174158, 51073042, 51103026]
- Shanghai Rising Star Program [11QH1402800]
- Shanghai Scientific and Technological Innovation Project [10431903000]
- Shanghai Natural Science Funds [11ZR1403100]
- State Key Laboratory of Molecular Engineering of Polymers of Fudan University
In this study, we report a mild and efficient strategy for growing thermosensitive polymers directly from the surface of exfoliated graphene oxide (GO). Exfoliated GO sheets were sequentially subject to the epoxide ring-opening reaction with tris(hydroxymethyl) aminomethane (TRIS) to increase the amount of reactive sites, the esterification with 2-bromo-2-methylpropionyl bromide to introduce the Br-containing initiating groups, and the surface-initiated single electron transferliving radical polymerization of N-isopropylacrylamide (NIPAM) to tune the molecular weights of grafted polymers. All these reactions were performed at ambient temperature without losing any other oxygen-containing functionality on GO. The resulting TRIS-GO-PNIPAM nanocomposites still maintain the separated single layers in dispersion, and the dispersibilities in organic solvents are significantly improved. Meanwhile, the aqueous dispersion of TRIS-GO-PNIPAM shows reversible temperature switching self-assembly and disassembly behavior at about 40 degrees C. Such smart graphene-based hybrid materials are promising for applications in nanoelectronics, sensors, and microfluidic switches. (c) 2012 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem, 2012
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据