Carbon-boron clathrates as a new class of sp<sup>3</sup>-bonded framework materials
Carbon-based frameworks composed of sp3 bonding represent a class of extremely lightweight strong materials, but only diamond and a handful of other compounds exist despite numerous predictions. Thus, there remains a large gap between the number of plausible structures predicted and those synthesize...
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| Format: | Article |
| Language: | English |
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American Association for the Advancement of Science (AAAS)
2020
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| Online Access: | https://hdl.handle.net/1721.1/125287 |
| _version_ | 1826199690208608256 |
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| author | Cohen, Ronald E. |
| author2 | Massachusetts Institute of Technology. Department of Earth, Atmospheric, and Planetary Sciences |
| author_facet | Massachusetts Institute of Technology. Department of Earth, Atmospheric, and Planetary Sciences Cohen, Ronald E. |
| author_sort | Cohen, Ronald E. |
| collection | MIT |
| description | Carbon-based frameworks composed of sp3 bonding represent a class of extremely lightweight strong materials, but only diamond and a handful of other compounds exist despite numerous predictions. Thus, there remains a large gap between the number of plausible structures predicted and those synthesized. We used a chemical design principle based on boron substitution to predict and synthesize a three-dimensional carbon-boron framework in a host/guest clathrate structure. The clathrate, with composition 2Sr@B6C6, exhibits the cubic bipartite sodalite structure (type VII clathrate) composed of sp3-bonded truncated octahedral C12B12 host cages that trap Sr2+ guest cations. The clathrate not only maintains the robust nature of diamond-like sp3 bonding but also offers potential for a broad range of compounds with tunable properties through substitution of guest atoms within the cages. |
| first_indexed | 2024-09-23T11:24:29Z |
| format | Article |
| id | mit-1721.1/125287 |
| institution | Massachusetts Institute of Technology |
| language | English |
| last_indexed | 2024-09-23T11:24:29Z |
| publishDate | 2020 |
| publisher | American Association for the Advancement of Science (AAAS) |
| record_format | dspace |
| spelling | mit-1721.1/1252872022-10-01T03:24:37Z Carbon-boron clathrates as a new class of sp<sup>3</sup>-bonded framework materials Cohen, Ronald E. Massachusetts Institute of Technology. Department of Earth, Atmospheric, and Planetary Sciences Carbon-based frameworks composed of sp3 bonding represent a class of extremely lightweight strong materials, but only diamond and a handful of other compounds exist despite numerous predictions. Thus, there remains a large gap between the number of plausible structures predicted and those synthesized. We used a chemical design principle based on boron substitution to predict and synthesize a three-dimensional carbon-boron framework in a host/guest clathrate structure. The clathrate, with composition 2Sr@B6C6, exhibits the cubic bipartite sodalite structure (type VII clathrate) composed of sp3-bonded truncated octahedral C12B12 host cages that trap Sr2+ guest cations. The clathrate not only maintains the robust nature of diamond-like sp3 bonding but also offers potential for a broad range of compounds with tunable properties through substitution of guest atoms within the cages. United States. Defense Advanced Research Projects Agency (Grant W31P4Q131000) United States. Department of Energy. Office of Science (Award DE-SC0001057) National Science Foundation (U.S.) (Grant EAR-1634415) United States. Department of Energy. GeoSciences (Grant DE-FG02-94ER14466) United States. Department of Energy. Office of Science (Contract DE-AC02-06CH11357) 2020-05-18T17:43:48Z 2020-05-18T17:43:48Z 2020-01 2020-03-26T18:22:04Z Article http://purl.org/eprint/type/JournalArticle 2375-2548 https://hdl.handle.net/1721.1/125287 Zhu, Li et al. “Carbon-boron clathrates as a new class of sp<sup>3</sup>-bonded framework materials.” Science Advances 6 (2020): eaay8361 © 2020 The Author(s) en 10.1126/sciadv.aay8361 Science Advances Creative Commons Attribution NonCommercial License 4.0 https://creativecommons.org/licenses/by-nc/4.0/ application/pdf American Association for the Advancement of Science (AAAS) Science Advances |
| spellingShingle | Cohen, Ronald E. Carbon-boron clathrates as a new class of sp<sup>3</sup>-bonded framework materials |
| title | Carbon-boron clathrates as a new class of sp<sup>3</sup>-bonded framework materials |
| title_full | Carbon-boron clathrates as a new class of sp<sup>3</sup>-bonded framework materials |
| title_fullStr | Carbon-boron clathrates as a new class of sp<sup>3</sup>-bonded framework materials |
| title_full_unstemmed | Carbon-boron clathrates as a new class of sp<sup>3</sup>-bonded framework materials |
| title_short | Carbon-boron clathrates as a new class of sp<sup>3</sup>-bonded framework materials |
| title_sort | carbon boron clathrates as a new class of sp sup 3 sup bonded framework materials |
| url | https://hdl.handle.net/1721.1/125287 |
| work_keys_str_mv | AT cohenronalde carbonboronclathratesasanewclassofspsup3supbondedframeworkmaterials |