文献类型：期刊文献

英文题名：Growing poly(N-vinylcarbazole) from the surface of graphene oxide via RAFT polymerization

作者：Zhang, Bin[1]; Chen, Yu[1]; Xu, Liqun[2]; Zeng, Longjia[1]; He, Ying[3]; Kang, En-Tang[2]; Zhang, Jinjuan[1]

机构：[1] Key Lab for Advanced Materials, Institute of Applied Chemistry, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, China; [2] Department of Chemical and Biomolecular Engineering, National University of Singapore, 10 Kent Ridge, Singapore 119260, Singapore; [3] Material Research and Analysis Center, School of Materials Science and Engineering, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, China

年份：2011

卷号：49

期号：9

起止页码：2043

外文期刊名：Journal of Polymer Science, Part A: Polymer Chemistry

收录：EI(收录号：20111313876702)

语种：英文

外文关键词：Nonvolatile storage - Free radical polymerization - Living polymerization - Grafting (chemical) - Chains

摘要：A new approach on usage of S-1-dodecyl-Sa€2-(α, αa€2-dimethyl-αa€3-acetic acid) trithiocarbonate (DDAT)-covalently functionalized graphene oxide (GO) as reversible addition fragmentation chain transfer (RAFT) agent for growing of poly(N-vinylcarbazole) (PVK) directly from the surface of GO was described. The PVK polymer covalently grafted onto GO has Mn of 8.05 ? - 103, and a polydispersity of 1.43. The resulting material PVK-GO shows a good solubility in organic solvents when compared to GO, and a significant energy bandgap of a?/2.49 eV. Bistable electrical switching and nonvolatile rewritable memory effect, with a turn-on voltage of about -1.7 V and an ON/OFF state current ratio in excess of 103, are demonstrated in the Al/PVK-GO/ITO structure. ? 2011 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem, 2011 A new "grafting from" method to grow poly(N-vinylcarbazole) from the surface of graphene oxide via RAFT polymerization is described. This material was successfully used to fabricate a nonvolatile memory device, which exhibited a typical bistable electrical switching and rewritable memory effect. Copyright ? 2011 Wiley Periodicals, Inc.