Waterproof molecular monolayers stabilize 2D materials
Two-dimensional van der Waals materials have rich and unique functional properties, but many are susceptible to corrosion under ambient conditions. Here we show that linear alkylamines n-CmH2m+1NH2, with m = 4 through 11, are highly effective in protecting the optoelectronic properties of these mate...
| Main Authors: | , , , , , , , , , , , , , , , , , |
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| Format: | Article |
| Language: | English |
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Proceedings of the National Academy of Sciences
2020
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| Online Access: | https://hdl.handle.net/1721.1/126051 |
| _version_ | 1826199143213694976 |
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| author | Su, Cong Yin, Zongyou Yan, QingBo Wang, Zegao Lin, Hongtao Sun, Lei Xu, Wenshuo Yamada, Tetsuya Ji, Xiang Zettsu, Nobuyuki Teshima, Katsuya Warner, Jamie H. Dinca, Mircea Hu, Juejun Dong, Mingdong Su, Gang Kong, Jing Li, Ju |
| author2 | Massachusetts Institute of Technology. Department of Nuclear Science and Engineering |
| author_facet | Massachusetts Institute of Technology. Department of Nuclear Science and Engineering Su, Cong Yin, Zongyou Yan, QingBo Wang, Zegao Lin, Hongtao Sun, Lei Xu, Wenshuo Yamada, Tetsuya Ji, Xiang Zettsu, Nobuyuki Teshima, Katsuya Warner, Jamie H. Dinca, Mircea Hu, Juejun Dong, Mingdong Su, Gang Kong, Jing Li, Ju |
| author_sort | Su, Cong |
| collection | MIT |
| description | Two-dimensional van der Waals materials have rich and unique functional properties, but many are susceptible to corrosion under ambient conditions. Here we show that linear alkylamines n-CmH2m+1NH2, with m = 4 through 11, are highly effective in protecting the optoelectronic properties of these materials, such as black phosphorus (BP) and transition-metal dichalcogenides (TMDs: WS2, 1T′-MoTe2, WTe2, WSe2, TaS2, and NbSe2). As a representative example, n-hexylamine (m = 6) can be applied in the form of thin molecular monolayers on BP flakes with less than 2-nm thickness and can prolong BP’s lifetime from a few hours to several weeks and even months in ambient environments. Characterizations combined with our theoretical analysis show that the thin monolayers selectively sift out water molecules, forming a drying layer to achieve the passivation of the protected 2D materials. The monolayer coating is also stable in air, H2 annealing, and organic solvents, but can be removed by certain organic acids. |
| first_indexed | 2024-09-23T11:15:04Z |
| format | Article |
| id | mit-1721.1/126051 |
| institution | Massachusetts Institute of Technology |
| language | English |
| last_indexed | 2024-09-23T11:15:04Z |
| publishDate | 2020 |
| publisher | Proceedings of the National Academy of Sciences |
| record_format | dspace |
| spelling | mit-1721.1/1260512022-09-27T18:11:08Z Waterproof molecular monolayers stabilize 2D materials Su, Cong Yin, Zongyou Yan, QingBo Wang, Zegao Lin, Hongtao Sun, Lei Xu, Wenshuo Yamada, Tetsuya Ji, Xiang Zettsu, Nobuyuki Teshima, Katsuya Warner, Jamie H. Dinca, Mircea Hu, Juejun Dong, Mingdong Su, Gang Kong, Jing Li, Ju Massachusetts Institute of Technology. Department of Nuclear Science and Engineering Massachusetts Institute of Technology. Research Laboratory of Electronics Massachusetts Institute of Technology. Department of Materials Science and Engineering Massachusetts Institute of Technology. Department of Chemistry Massachusetts Institute of Technology. Department of Electrical Engineering and Computer Science Two-dimensional van der Waals materials have rich and unique functional properties, but many are susceptible to corrosion under ambient conditions. Here we show that linear alkylamines n-CmH2m+1NH2, with m = 4 through 11, are highly effective in protecting the optoelectronic properties of these materials, such as black phosphorus (BP) and transition-metal dichalcogenides (TMDs: WS2, 1T′-MoTe2, WTe2, WSe2, TaS2, and NbSe2). As a representative example, n-hexylamine (m = 6) can be applied in the form of thin molecular monolayers on BP flakes with less than 2-nm thickness and can prolong BP’s lifetime from a few hours to several weeks and even months in ambient environments. Characterizations combined with our theoretical analysis show that the thin monolayers selectively sift out water molecules, forming a drying layer to achieve the passivation of the protected 2D materials. The monolayer coating is also stable in air, H2 annealing, and organic solvents, but can be removed by certain organic acids. National Science Foundation (Grant ECCS-1610806) 2020-07-02T14:24:11Z 2020-07-02T14:24:11Z 2019-10 2019-06 2019-12-17T15:56:26Z Article http://purl.org/eprint/type/JournalArticle 0027-8424 1091-6490 https://hdl.handle.net/1721.1/126051 Su, Cong et al. "Waterproof molecular monolayers stabilize 2D materials." Proceedings of the National Academy of Sciences 116, 42 (October 2019): 20844-20849 © 2019 National Academy of Sciences en http://dx.doi.org/10.1073/pnas.1909500116 Proceedings of the National Academy of Sciences 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 Proceedings of the National Academy of Sciences PNAS |
| spellingShingle | Su, Cong Yin, Zongyou Yan, QingBo Wang, Zegao Lin, Hongtao Sun, Lei Xu, Wenshuo Yamada, Tetsuya Ji, Xiang Zettsu, Nobuyuki Teshima, Katsuya Warner, Jamie H. Dinca, Mircea Hu, Juejun Dong, Mingdong Su, Gang Kong, Jing Li, Ju Waterproof molecular monolayers stabilize 2D materials |
| title | Waterproof molecular monolayers stabilize 2D materials |
| title_full | Waterproof molecular monolayers stabilize 2D materials |
| title_fullStr | Waterproof molecular monolayers stabilize 2D materials |
| title_full_unstemmed | Waterproof molecular monolayers stabilize 2D materials |
| title_short | Waterproof molecular monolayers stabilize 2D materials |
| title_sort | waterproof molecular monolayers stabilize 2d materials |
| url | https://hdl.handle.net/1721.1/126051 |
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