Substrate‐Tight Graphene Transmembrane‐nanofluidic Devices
Small, vol. 22, pp. e2407140
Abstract
Nanopores in 2D membranes like graphene have great potential for applications such as single-molecule sensing, ion sieving, and harvesting osmotic power. A critical challenge, however, has been to ensure the stability of these nanofluidic transmembrane devices, as the ultrathin graphene membranes tend to delaminate and peel away from their substrates when exposed to aqueous solutions. In this study, it is shown that using a pyrene-based coating prevents delamination and allows graphene to remain freestanding over a SiN aperture for several days in an electrolyte. The pyrene molecules interact strongly with the graphene through π-π bonding, adhering the graphene to the substrate. Additionally, the pyrene-based adhesion layer remarkably increases the success rates of the graphene transmembrane devices from 4% to 76.2%. The results underscore the importance of using adhesion layers to enhance the stability of graphene in nanofluidic devices and prolong their operational lifespan. It enables the development of more robust graphene-based nanofluidic devices for a wide range of applications necessitating free-standing graphene.
Authors 7
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Affiliation as printed
Technology Innovation Center of Graphene Metrology and Standardization for State Market Regulation Beijing Graphene Institute Beijing 100095 P. R. China
Technology Innovation Center of Graphene Metrology and Standardization for State Market Regulation, Beijing Graphene Institute, Beijing, 100095 P. R. China
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Erik P. van Geest Aachen
Affiliation as printed
Leiden Institute of Chemistry Leiden University Einsteinweg 55 Leiden 2333CC The Netherlands
Leiden Institute of Chemistry, Leiden University, Einsteinweg 55, Leiden, 2333CC The Netherlands
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Wangyang Fu corresponding
Affiliation as printed
Key Laboratory of Advanced Materials of Ministry of Education School of Materials Science and Engineering Tsinghua University Shaw Technical Science Building, Haidian District Beijing 100084 P. R. China
Key Laboratory of Advanced Materials of Ministry of Education, School of Materials Science and Engineering, Tsinghua University, Shaw Technical Science Building, Haidian District, Beijing, 100084 P. R. China
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Jianwei Gao Aachen
Affiliation as printed
Leiden Institute of Chemistry Leiden University Einsteinweg 55 Leiden 2333CC The Netherlands
Leiden Institute of Chemistry, Leiden University, Einsteinweg 55, Leiden, 2333CC The Netherlands
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Peking University · Beijing Graphene Institute · Beijing National Laboratory for Molecular Sciences
Affiliation as printed
Center for Nanochemistry Beijing Science and Engineering Center for Nanocarbons Beijing National Laboratory for Molecular Sciences College of Chemistry and Molecular Engineering Peking University Beijing 100871 P. R. China
Technology Innovation Center of Graphene Metrology and Standardization for State Market Regulation Beijing Graphene Institute Beijing 100095 P. R. China
Center for Nanochemistry, Beijing Science and Engineering Center for Nanocarbons, Beijing National Laboratory for Molecular Sciences, College of Chemistry and Molecular Engineering, Peking University, Beijing, 100871 P. R. China
Technology Innovation Center of Graphene Metrology and Standardization for State Market Regulation, Beijing Graphene Institute, Beijing, 100095 P. R. China
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Peking University · Beijing Graphene Institute · Beijing National Laboratory for Molecular Sciences
Affiliation as printed
Center for Nanochemistry Beijing Science and Engineering Center for Nanocarbons Beijing National Laboratory for Molecular Sciences College of Chemistry and Molecular Engineering Peking University Beijing 100871 P. R. China
Technology Innovation Center of Graphene Metrology and Standardization for State Market Regulation Beijing Graphene Institute Beijing 100095 P. R. China
Center for Nanochemistry, Beijing Science and Engineering Center for Nanocarbons, Beijing National Laboratory for Molecular Sciences, College of Chemistry and Molecular Engineering, Peking University, Beijing, 100871 P. R. China
Technology Innovation Center of Graphene Metrology and Standardization for State Market Regulation, Beijing Graphene Institute, Beijing, 100095 P. R. China
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Affiliation as printed
Leiden Institute of Chemistry Leiden University Einsteinweg 55 Leiden 2333CC The Netherlands
Leiden Institute of Chemistry, Leiden University, Einsteinweg 55, Leiden, 2333CC The Netherlands
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