Polymerization driven monomer passage through monolayer chemical vapour deposition graphene

Tao Zhang (), Zhongquan Liao, Leonardo Medrano Sandonas, Arezoo Dianat, Xiaoling Liu, Peng Xiao, Ihsan Amin, Rafael Gutierrez, Tao Chen (), Ehrenfried Zschech, Gianaurelio Cuniberti and Rainer Jordan ()
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Tao Zhang: Technische Universität Dresden
Zhongquan Liao: Technische Universität Dresden
Leonardo Medrano Sandonas: Technische Universität Dresden
Arezoo Dianat: Technische Universität Dresden
Xiaoling Liu: Leibniz-Institut für Polymerforschung Dresden e.V.
Peng Xiao: Chinese Academy of Sciences
Ihsan Amin: Technische Universität Dresden
Rafael Gutierrez: Technische Universität Dresden
Tao Chen: Chinese Academy of Sciences
Ehrenfried Zschech: Technische Universität Dresden
Gianaurelio Cuniberti: Technische Universität Dresden
Rainer Jordan: Technische Universität Dresden

Nature Communications, 2018, vol. 9, issue 1, 1-9

Abstract: Abstract Mass transport through graphene is receiving increasing attention due to the potential for molecular sieving. Experimental studies are mostly limited to the translocation of protons, ions, and water molecules, and results for larger molecules through graphene are rare. Here, we perform controlled radical polymerization with surface-anchored self-assembled initiator monolayer in a monomer solution with single-layer graphene separating the initiator from the monomer. We demonstrate that neutral monomers are able to pass through the graphene (via native defects) and increase the graphene defects ratio (Raman ID/IG) from ca. 0.09 to 0.22. The translocations of anionic and cationic monomers through graphene are significantly slower due to chemical interactions of monomers with the graphene defects. Interestingly, if micropatterned initiator-monolayers are used, the translocations of anionic monomers apparently cut the graphene sheet into congruent microscopic structures. The varied interactions between monomers and graphene defects are further investigated by quantum molecular dynamics simulations.

Date: 2018
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DOI: 10.1038/s41467-018-06599-y

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