• 文献标题:   Graphene Functionalisation with a Conjugated Poly(fluorene) by Click Coupling: Striking Electronic Properties in Solution
  • 文献类型:   Article
  • 作  者:   CASTELAIN M, MARTINEZ G, MERINO P, MARTINGAGO JA, SEGURA JL, ELLIS G, SALAVAGIONE HJ
  • 作者关键词:   click chemistry, conjugated polymer, graphene, photoelectron spectroscopy, raman spectroscopy
  • 出版物名称:   CHEMISTRYA EUROPEAN JOURNAL
  • ISSN:   0947-6539 EI 1521-3765
  • 通讯作者地址:   Univ Complutense Madrid
  • 被引频次:   48
  • DOI:   10.1002/chem.201102008
  • 出版年:   2012

▎ 摘  要

Graphene flakes covalently modified with a conjugated polymer, poly[(9,9-dihexylfluorene)-co-alt-(9,9-bis-(6-azidohexyl)fluorene)] (PFA), were efficiently synthesised by a Cu-catalysed Huisgen 1,3-dipolar cycloaddition between alkyne-modified graphene and an azide-functionalised polymer. Two approaches for the modification of graphene with alkyne groups were investigated (coupling with a diazonium salt generated in situ or an amidation reaction) and the optimum conditions determined. The success of the click-coupling approach was confirmed by FTIR, 1H NMR, Raman, and X-ray photoelectron spectroscopy (XPS). The absorption and emission spectra of the click product show a strong solvent dependency.