tailieunhanh - Báo cáo hóa học: " Edge-Functionalization of Pyrene as a Miniature Graphene via Friedel–Crafts Acylation Reaction in Poly(Phosphoric Acid)"

Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành hóa học dành cho các bạn yêu hóa học tham khảo đề tài: Edge-Functionalization of Pyrene as a Miniature Graphene via Friedel–Crafts Acylation Reaction in Poly(Phosphoric Acid) | Nanoscale Res Lett 2010 5 1686-1691 DOI s11671-010-9697-8 NANO EXPRESS Edge-Functionalization of Pyrene as a Miniature Graphene via Friedel-Crafts Acylation Reaction in Poly Phosphoric Acid In-Yup Jeon Eun-Kyoung Choi Seo-Yoon Bae Jong-Beom Baek Received 4 June 2010 Accepted 1 July 2010 Published online 15 July 2010 The Author s 2010. This article is published with open access at Abstract The feasibility of edge-functionalization of graphite was tested via the model reaction between pyrene and 4- 2 4 6-trimethylphenyloxy benzamide TMPBA in poly phosphoric acid PPA phosphorous pentoxide P2O5 medium. The functionalization was confirmed by various characterization techniques. On the basis of the model study the reaction condition could be extended to the edge-functionalization of graphite with TMPBA. Preliminary results showed that the resultant TMPBA-grafted graphite graph-ite-g-TMPBA was found to be readily dispersible in N-methyl-2-pyrrolidone NMP and can be used as a precursor for edge-functionalized graphene EFG . Keywords Pyrene Graphite Graphene Edge-functionalization Introduction Graphene a single layer of carbon atom bonded together in a hexagonal lattice has attracted tremendous attention due to its peculiar electronic and physical properties 1-6 . However there are two issues that have to be resolved first for its use in practice. The one is scalable exfoliation of graphite into graphene and or graphene-like sheets less than ten layers 7 . The other is stabilization of exfoliated graphene suspension in various matrices 8 . Graphite oxide GO which is oxidized form of graphite containing oxygenated functional groups on its edge and basal plane . Jeon . Choi . Bae . Baek Interdisciplinary School of Green Energy Institute of Advanced Materials Devices Ulsan National Institute of Science and Technology UNIST 100 Banyeon Ulsan 689-798 South Korea e-mail jbbaek@ 0 Springer has been considered the most viable .

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