Oriented 2D covalent organic framework thin films on single-layer graphene

John W. Colson, Arthur R. Woll, Arnab Mukherjee, Mark P. Levendorf, Eric L. Spitler, Virgil B. Shields, Michael G. Spencer, Jiwoong Park, William R. Dichtel

Research output: Contribution to journalArticlepeer-review

689 Scopus citations

Abstract

Covalent organic frameworks (COFs), in which molecular building blocks form robust microporous networks, are usually synthesized as insoluble and unprocessable powders. We have grown two-dimensional (2D) COF films on single-layer graphene (SLG) under operationally simple solvothermal conditions. The layered films stack normal to the SLG surface and show improved crystallinity compared with COF powders. We used SLG surfaces supported on copper, silicon carbide, and transparent fused silica (SiO2) substrates, enabling optical spectroscopy of COFs in transmission mode. Three chemically distinct COF films grown on SLG exhibit similar vertical alignment and long-range order, and two of these are of interest for organic electronic devices for which thin-film formation is a prerequisite for characterizing their optoelectronic properties.

Original languageEnglish (US)
Pages (from-to)228-231
Number of pages4
JournalScience
Volume332
Issue number6026
DOIs
StatePublished - Apr 8 2011

ASJC Scopus subject areas

  • General

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