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Грибанов, А. В.; Sazanov, Yu. N.; Мокеев, М. В.

doi:10.1023/a:1019573215648

Cited by 7 publications

(1 citation statement)

References 5 publications

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“…Here we describe the growth of graphene from a Langmuir-Blodgett (LB) film of poly(amic acid) (PAA), which was effectively converted to a PI in situ, on Cu foils. PI is a thermally-stable polymer and known to undergo carbonization at elevated temperatures (400 °C-1000 °C) [19][20][21][22][23] as well as graphitization at ∼3000 °C [24][25][26][27]. Jian et al also showed that graphitization occurs when films of commercially available PI are heated to ca.…”

Section: Introductionmentioning

confidence: 99%

Conversion of Langmuir–Blodgett monolayers and bilayers of poly(amic acid) through polyimide to graphene

Lyu

Ruoff

et al. 2016

2D Mater.

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Various solid carbon sources, particularly poly(methyl methacrylate), have been used as precursors to graphene. The corresponding growth process generally involves the decomposition of the solids to hydrocarbon gases followed by their adsorption on metallic substrates (e.g., Cu). We report a different approach that uses a thermally-resistant polyimide (PI) as a carbon precursor. Langmuir-Blodgett films of poly(amic acid) (PAA) were transferred to copper foils and then converted to graphene via a PI intermediate. The Cu foil substrate was also discovered to facilitate the orientation of aromatic moieties upon carbonization process of the PI. As approximately 50% of the initial quantity of the PAA was found to remain at 1000 °C, thermally-stable polymers may reduce the quantity of starting material required to prepare high quality films of graphene. Graphene grown using this method featured a relatively large domain size and an absence of adventitious adlayers.

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