Precise control of pore hydrophilicity enabled by post-synthetic cation exchange in metal–organic frameworks
The ability to control the relative humidity at which water uptake occurs in a given adsorbent is advantageous, making that material applicable to a variety of different applications. Here, we show that cation exchange in a metal-organic framework allows precise control over the humidity onset of th...
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| Format: | Article |
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Royal Society of Chemistry (RSC)
2019
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| Online Access: | http://hdl.handle.net/1721.1/120018 https://orcid.org/0000-0002-9475-2638 https://orcid.org/0000-0002-9890-1346 https://orcid.org/0000-0002-6557-4940 https://orcid.org/0000-0001-7045-1200 https://orcid.org/0000-0002-1262-1264 |
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| author | Wright, Ashley Michael Rieth, Adam Joseph Yang, Sungwoo Wang, Evelyn Dinca, Mircea |
| author2 | Massachusetts Institute of Technology. Department of Chemistry |
| author_facet | Massachusetts Institute of Technology. Department of Chemistry Wright, Ashley Michael Rieth, Adam Joseph Yang, Sungwoo Wang, Evelyn Dinca, Mircea |
| author_sort | Wright, Ashley Michael |
| collection | MIT |
| description | The ability to control the relative humidity at which water uptake occurs in a given adsorbent is advantageous, making that material applicable to a variety of different applications. Here, we show that cation exchange in a metal-organic framework allows precise control over the humidity onset of the water uptake step. Controlled incorporation of cobalt in place of zinc produces open metal sites into the cubic triazolate framework MFU-4l, and thereby provides access to materials with uptake steps over a 30% relative humidity range. Notably, the MFU-4l framework has an extremely high water adsorption capacity of 1.05 g g-1, amongst the highest known for porous materials. The total water capacity is independent of the cobalt loading, showing that cation exchange is a viable route to increase the hydrophilicity of metal-organic frameworks without sacrificing capacity. |
| first_indexed | 2024-09-23T12:09:18Z |
| format | Article |
| id | mit-1721.1/120018 |
| institution | Massachusetts Institute of Technology |
| last_indexed | 2024-09-23T12:09:18Z |
| publishDate | 2019 |
| publisher | Royal Society of Chemistry (RSC) |
| record_format | dspace |
| spelling | mit-1721.1/1200182022-10-01T08:32:00Z Precise control of pore hydrophilicity enabled by post-synthetic cation exchange in metal–organic frameworks Wright, Ashley Michael Rieth, Adam Joseph Yang, Sungwoo Wang, Evelyn Dinca, Mircea Massachusetts Institute of Technology. Department of Chemistry Massachusetts Institute of Technology. Department of Mechanical Engineering Wright, Ashley Michael Rieth, Adam Joseph Yang, Sungwoo Wang, Evelyn Dinca, Mircea The ability to control the relative humidity at which water uptake occurs in a given adsorbent is advantageous, making that material applicable to a variety of different applications. Here, we show that cation exchange in a metal-organic framework allows precise control over the humidity onset of the water uptake step. Controlled incorporation of cobalt in place of zinc produces open metal sites into the cubic triazolate framework MFU-4l, and thereby provides access to materials with uptake steps over a 30% relative humidity range. Notably, the MFU-4l framework has an extremely high water adsorption capacity of 1.05 g g-1, amongst the highest known for porous materials. The total water capacity is independent of the cobalt loading, showing that cation exchange is a viable route to increase the hydrophilicity of metal-organic frameworks without sacrificing capacity. Ford Motor Company Massachusetts Institute of Technology. Tata Center for Technology and Design National Science Foundation (U.S.) (CAREER grant DMR-1452612) 2019-01-14T13:37:16Z 2019-01-14T13:37:16Z 2018-03 2018-01 2019-01-10T17:29:14Z Article http://purl.org/eprint/type/JournalArticle 2041-6520 2041-6539 http://hdl.handle.net/1721.1/120018 Wright, Ashley M., Adam J. Rieth, Sungwoo Yang, Evelyn N. Wang, and Mircea Dincă. “Precise Control of Pore Hydrophilicity Enabled by Post-Synthetic Cation Exchange in Metal–organic Frameworks.” Chemical Science 9, no. 15 (2018): 3856–3859. https://orcid.org/0000-0002-9475-2638 https://orcid.org/0000-0002-9890-1346 https://orcid.org/0000-0002-6557-4940 https://orcid.org/0000-0001-7045-1200 https://orcid.org/0000-0002-1262-1264 http://dx.doi.org/10.1039/C8SC00112J Chemical Science Creative Commons Attribution 3.0 unported license https://creativecommons.org/licenses/by/3.0/ application/pdf Royal Society of Chemistry (RSC) Royal Society of Chemistry (RSC) |
| spellingShingle | Wright, Ashley Michael Rieth, Adam Joseph Yang, Sungwoo Wang, Evelyn Dinca, Mircea Precise control of pore hydrophilicity enabled by post-synthetic cation exchange in metal–organic frameworks |
| title | Precise control of pore hydrophilicity enabled by post-synthetic cation exchange in metal–organic frameworks |
| title_full | Precise control of pore hydrophilicity enabled by post-synthetic cation exchange in metal–organic frameworks |
| title_fullStr | Precise control of pore hydrophilicity enabled by post-synthetic cation exchange in metal–organic frameworks |
| title_full_unstemmed | Precise control of pore hydrophilicity enabled by post-synthetic cation exchange in metal–organic frameworks |
| title_short | Precise control of pore hydrophilicity enabled by post-synthetic cation exchange in metal–organic frameworks |
| title_sort | precise control of pore hydrophilicity enabled by post synthetic cation exchange in metal organic frameworks |
| url | http://hdl.handle.net/1721.1/120018 https://orcid.org/0000-0002-9475-2638 https://orcid.org/0000-0002-9890-1346 https://orcid.org/0000-0002-6557-4940 https://orcid.org/0000-0001-7045-1200 https://orcid.org/0000-0002-1262-1264 |
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