Molecular valves for controlling gas phase transport made from discrete ångström-sized pores in graphene
An ability to precisely regulate the quantity and location of molecular flux is of value in applications such as nanoscale three-dimensional printing, catalysis and sensor design. Barrier materials containing pores with molecular dimensions have previously been used to manipulate molecular compositi...
| Main Authors: | , , , , , , , |
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| Format: | Article |
| Language: | en_US |
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Nature Publishing Group
2016
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| Online Access: | http://hdl.handle.net/1721.1/101263 https://orcid.org/0000-0003-0148-9656 https://orcid.org/0000-0003-2944-808X |
| _version_ | 1811083340531367936 |
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| author | Wang, Luda Cantley, Lauren Koenig, Steven P. Liu, Xinghui Pellegrino, John Strano, Michael S. Scott Bunch, J. Drahushuk, Lee William |
| author2 | Massachusetts Institute of Technology. Department of Chemical Engineering |
| author_facet | Massachusetts Institute of Technology. Department of Chemical Engineering Wang, Luda Cantley, Lauren Koenig, Steven P. Liu, Xinghui Pellegrino, John Strano, Michael S. Scott Bunch, J. Drahushuk, Lee William |
| author_sort | Wang, Luda |
| collection | MIT |
| description | An ability to precisely regulate the quantity and location of molecular flux is of value in applications such as nanoscale three-dimensional printing, catalysis and sensor design. Barrier materials containing pores with molecular dimensions have previously been used to manipulate molecular compositions in the gas phase, but have so far been unable to offer controlled gas transport through individual pores. Here, we show that gas flux through discrete ångström-sized pores in monolayer graphene can be detected and then controlled using nanometre-sized gold clusters, which are formed on the surface of the graphene and can migrate and partially block a pore. In samples without gold clusters, we observe stochastic switching of the magnitude of the gas permeance, which we attribute to molecular rearrangements of the pore. Our molecular valves could be used, for example, to develop unique approaches to molecular synthesis that are based on the controllable switching of a molecular gas flux, reminiscent of ion channels in biological cell membranes and solid-state nanopores. |
| first_indexed | 2024-09-23T12:31:31Z |
| format | Article |
| id | mit-1721.1/101263 |
| institution | Massachusetts Institute of Technology |
| language | en_US |
| last_indexed | 2024-09-23T12:31:31Z |
| publishDate | 2016 |
| publisher | Nature Publishing Group |
| record_format | dspace |
| spelling | mit-1721.1/1012632022-10-01T09:33:24Z Molecular valves for controlling gas phase transport made from discrete ångström-sized pores in graphene Wang, Luda Cantley, Lauren Koenig, Steven P. Liu, Xinghui Pellegrino, John Strano, Michael S. Scott Bunch, J. Drahushuk, Lee William Massachusetts Institute of Technology. Department of Chemical Engineering Massachusetts Institute of Technology. Department of Mechanical Engineering Wang, Luda Drahushuk, Lee William Strano, Michael S. An ability to precisely regulate the quantity and location of molecular flux is of value in applications such as nanoscale three-dimensional printing, catalysis and sensor design. Barrier materials containing pores with molecular dimensions have previously been used to manipulate molecular compositions in the gas phase, but have so far been unable to offer controlled gas transport through individual pores. Here, we show that gas flux through discrete ångström-sized pores in monolayer graphene can be detected and then controlled using nanometre-sized gold clusters, which are formed on the surface of the graphene and can migrate and partially block a pore. In samples without gold clusters, we observe stochastic switching of the magnitude of the gas permeance, which we attribute to molecular rearrangements of the pore. Our molecular valves could be used, for example, to develop unique approaches to molecular synthesis that are based on the controllable switching of a molecular gas flux, reminiscent of ion channels in biological cell membranes and solid-state nanopores. National Science Foundation (U.S.). Division of Civil, Mechanical and Manufacturing (CAREER Grant 1054406) National Science Foundation (U.S.). Industry/University Cooperative Research Center for Membrane Science, Engineering and Technology National Nanotechnology Infrastructure Network National Science Foundation (U.S.) (Grant ECS-0335765) National Science Foundation (U.S.). Graduate Research Fellowship (Grant DGE-1247312) United States. Army Research Office (Contract W911NF-13-D-0001) 2016-02-24T22:22:09Z 2016-02-24T22:22:09Z 2015-08 2014-04 Article http://purl.org/eprint/type/JournalArticle 1748-3387 1748-3395 http://hdl.handle.net/1721.1/101263 Wang, Luda, Lee W. Drahushuk, Lauren Cantley, Steven P. Koenig, Xinghui Liu, John Pellegrino, Michael S. Strano, and J. Scott Bunch. “Molecular Valves for Controlling Gas Phase Transport Made from Discrete ångström-Sized Pores in Graphene.” Nature Nanotechnology 10, no. 9 (August 3, 2015): 785–90. https://orcid.org/0000-0003-0148-9656 https://orcid.org/0000-0003-2944-808X en_US http://dx.doi.org/10.1038/nnano.2015.158 Nature Nanotechnology Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use. application/pdf Nature Publishing Group arXiv |
| spellingShingle | Wang, Luda Cantley, Lauren Koenig, Steven P. Liu, Xinghui Pellegrino, John Strano, Michael S. Scott Bunch, J. Drahushuk, Lee William Molecular valves for controlling gas phase transport made from discrete ångström-sized pores in graphene |
| title | Molecular valves for controlling gas phase transport made from discrete ångström-sized pores in graphene |
| title_full | Molecular valves for controlling gas phase transport made from discrete ångström-sized pores in graphene |
| title_fullStr | Molecular valves for controlling gas phase transport made from discrete ångström-sized pores in graphene |
| title_full_unstemmed | Molecular valves for controlling gas phase transport made from discrete ångström-sized pores in graphene |
| title_short | Molecular valves for controlling gas phase transport made from discrete ångström-sized pores in graphene |
| title_sort | molecular valves for controlling gas phase transport made from discrete angstrom sized pores in graphene |
| url | http://hdl.handle.net/1721.1/101263 https://orcid.org/0000-0003-0148-9656 https://orcid.org/0000-0003-2944-808X |
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