• 文献标题:   Electron-Donating Behavior of Few-Layer Graphene in Covalent Ensembles with Electron-Accepting Phthalocyanines
  • 文献类型:   Article
  • 作  者:   RAGOUSSI ME, KATSUKIS G, ROTH A, MALIG J, DE LA TORRE G, GULDI DM, TORRES T
  • 作者关键词:  
  • 出版物名称:   JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
  • ISSN:   0002-7863
  • 通讯作者地址:   Univ Autonoma Madrid
  • 被引频次:   65
  • DOI:   10.1021/ja411830x
  • 出版年:   2014

▎ 摘  要

We describe herein the first example of highly exfoliated graphene covalently linked to electron accepting phthalocyanines. The functionalization of the nanocarbon surface with alkylsulfonyl phthalocyanines was attained by means of a "click" chemistry protocol. The new ensemble was fully characterized (thermogravimetric analysis, atomic force microscopy, transmission electron microscopy and Raman, as well as ground-state absorption) and was studied in terms of electron donor-acceptor interactions in the ground and in the excited state. In particular, a series of steady-state and time-resolved spectroscopy experiments demonstrated photoinduced electron transfer from the graphene to the electron-accepting phthalocyanines. This is the first example of an electron dono-acceptor nanoconjugate, that is, few-layer graphene/phthalocyanine, pinpointing the uncommon electron donating character of graphene.