期刊
NANO LETTERS
卷 14, 期 3, 页码 1388-1393出版社
AMER CHEMICAL SOC
DOI: 10.1021/nl404446f
关键词
Graphene; interface; assembly; film
类别
资金
- Institute for Basic Science (IBS) [CA-1201-02]
- Korean NRF [2010-0029409, NRF-2011-35B-D00013]
- US National Science Foundation [DMR-1105455]
- National Research Foundation of Korea [2010-0029409] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
We report a remarkably rapid method for assembling pristine graphene platelets into a large area transparent film at a liquid surface. Some 2-3 layer pristine graphene platelets temporally solvated with N-methyl-2-pyrrolidone (NMP) are assembled at the surface of a dilute aqueous suspension using an evaporation-driven Rayleigh-Taylor instability and then are driven together by Marangoni forces. The platelets are fixed through physical binding of their edges. Typically, 8-cm-diameter circular graphene films are generated within two minutes. Once formed, the films can be transferred onto various substrates with flat or textured topologies. This interfacial assembly protocol is generally applicable to other nanomaterials, including OD fullerene and 1D carbon nanotubes, which commonly suffer from limited solution compatibility.
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