Abstract:
:Chemical functionalization is one of the most powerful and widely used strategies to control the properties of nanomaterials, particularly in the field of graphene. However, the ill-defined structure of the present functionalized graphene inhibits atomically precise structural characterization and structure-correlated property modulation. Here we present a general edge chlorination protocol for atomically precise functionalization of nanographenes at different scales from 1.2 to 3.4 nm and its application in graphene nanoribbons. The well-defined edge chlorination is unambiguously confirmed by X-ray single-crystal analysis, which also discloses the characteristic non-planar molecular shape and detailed bond lengths of chlorinated nanographenes. Chlorinated nanographenes and graphene nanoribbons manifest enhanced solution processability associated with decreases in the optical band gap and frontier molecular orbital energy levels, exemplifying the structure-correlated property modulation by precise edge chlorination.
journal_name
Nat Communjournal_title
Nature communicationsauthors
Tan YZ,Yang B,Parvez K,Narita A,Osella S,Beljonne D,Feng X,Müllen Kdoi
10.1038/ncomms3646subject
Has Abstractpub_date
2013-01-01 00:00:00pages
2646issn
2041-1723pii
ncomms3646journal_volume
4pub_type
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