One-step functionalization of graphene with cyclopentadienyl-capped macromolecules via Diels–Alder “click” chemistry
作者： Jinchun Yuan , Guohua Chen , Wengui Weng , Yuanze Xu
DOI: 10.1039/C2JM16433G
关键词: Ethylene glycol 、 Graphene 、 Polymer chemistry 、 Raman spectroscopy 、 Thermogravimetric analysis 、 Catalysis 、 Macromolecule 、 Click chemistry 、 Materials science 、 Cyclopentadienyl complex
摘要: Under mild conditions at ambient temperature, as well 80 °C, graphene chemically converted from oxide was functionalized with cyclopentadienyl (Cp)-capped poly(ethylene glycol) monomethyl ether through a one-step Diels–Alder [4 + 2] (DA) “click” reaction without any catalyst. The resulting material showed improved dispersion properties in various solvents. Spectroscopic tools (Raman, FTIR, XPS, XRD) and nanoscopic scale observations (AFM, SEM, HRTEM) all confirmed the success of DA reaction. In addition, thermogravimetric analysis (TGA) revealed that grafting ratios temperature °C were 16.7% 21.8%, respectively.
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