Hyperstage Graphite: Electrochemical Synthesis and Spontaneous Reactive Exfoliation
Covalent modification of the π-electron basal planes of graphene enables the formation of new materials with enhanced functionality. An electrochemical method is reported for the formation of what is referred to as a Hyperstage-1 graphite intercalation compound (GIC), which has a very large interlay...
| Main Authors: | , , , |
|---|---|
| Other Authors: | |
| Format: | Article |
| Language: | en_US |
| Published: |
Wiley Blackwell
2018
|
| Online Access: | http://hdl.handle.net/1721.1/114414 https://orcid.org/0000-0002-4116-4517 https://orcid.org/0000-0003-1338-7841 https://orcid.org/0000-0002-0588-9545 |
| _version_ | 1826196101569445888 |
|---|---|
| author | Jeon, Intak Yoon, Bora He, Maggie Swager, Timothy M |
| author2 | Massachusetts Institute of Technology. Center for Materials Science and Engineering |
| author_facet | Massachusetts Institute of Technology. Center for Materials Science and Engineering Jeon, Intak Yoon, Bora He, Maggie Swager, Timothy M |
| author_sort | Jeon, Intak |
| collection | MIT |
| description | Covalent modification of the π-electron basal planes of graphene enables the formation of new materials with enhanced functionality. An electrochemical method is reported for the formation of what is referred to as a Hyperstage-1 graphite intercalation compound (GIC), which has a very large interlayer spacing d[subscript 001] > 15.3 Å and contains disordered interstitial molecules/ions. This material is highly activated and undergoes spontaneous exfoliation when reacted with diazonium ions to produce soluble graphenes with high functionalization densities of one pendant aromatic ring for every 12 graphene carbons. Critical to achieving high functionalization density is the Hyperstage-1 GIC state, a weakening of the van der Waals coupling between adjacent graphene layers, and the ability of reactants to diffuse into the disordered intercalate phase between the layers. Graphene functionalization with 3,5-dinitrophenyl groups provides for exceptional dispersibility (0.24 mg mL[superscript −1]) in N,N-dimethylformamide and for conjugation with amines. |
| first_indexed | 2024-09-23T10:21:12Z |
| format | Article |
| id | mit-1721.1/114414 |
| institution | Massachusetts Institute of Technology |
| language | en_US |
| last_indexed | 2024-09-23T10:21:12Z |
| publishDate | 2018 |
| publisher | Wiley Blackwell |
| record_format | dspace |
| spelling | mit-1721.1/1144142022-09-26T17:23:43Z Hyperstage Graphite: Electrochemical Synthesis and Spontaneous Reactive Exfoliation Jeon, Intak Yoon, Bora He, Maggie Swager, Timothy M Massachusetts Institute of Technology. Center for Materials Science and Engineering Massachusetts Institute of Technology. Institute for Soldier Nanotechnologies Massachusetts Institute of Technology. Department of Chemistry Swager, Timothy M Jeon, Intak Yoon, Bora He, Maggie Swager, Timothy M Covalent modification of the π-electron basal planes of graphene enables the formation of new materials with enhanced functionality. An electrochemical method is reported for the formation of what is referred to as a Hyperstage-1 graphite intercalation compound (GIC), which has a very large interlayer spacing d[subscript 001] > 15.3 Å and contains disordered interstitial molecules/ions. This material is highly activated and undergoes spontaneous exfoliation when reacted with diazonium ions to produce soluble graphenes with high functionalization densities of one pendant aromatic ring for every 12 graphene carbons. Critical to achieving high functionalization density is the Hyperstage-1 GIC state, a weakening of the van der Waals coupling between adjacent graphene layers, and the ability of reactants to diffuse into the disordered intercalate phase between the layers. Graphene functionalization with 3,5-dinitrophenyl groups provides for exceptional dispersibility (0.24 mg mL[superscript −1]) in N,N-dimethylformamide and for conjugation with amines. National Science Foundation (U.S.) (DMR-1410718) 2018-03-27T18:33:29Z 2018-03-27T18:33:29Z 2018-01 2017-08 Article http://purl.org/eprint/type/JournalArticle 0935-9648 1521-4095 http://hdl.handle.net/1721.1/114414 Jeon, Intak, et al. “Hyperstage Graphite: Electrochemical Synthesis and Spontaneous Reactive Exfoliation.” Advanced Materials, vol. 30, no. 3, Jan. 2018, p. 1704538. https://orcid.org/0000-0002-4116-4517 https://orcid.org/0000-0003-1338-7841 https://orcid.org/0000-0002-0588-9545 en_US http://dx.doi.org/10.1002/adma.201704538 Advanced Materials Creative Commons Attribution-Noncommercial-Share Alike http://creativecommons.org/licenses/by-nc-sa/4.0/ application/pdf Wiley Blackwell Prof. Swager via Erja Kajosalo |
| spellingShingle | Jeon, Intak Yoon, Bora He, Maggie Swager, Timothy M Hyperstage Graphite: Electrochemical Synthesis and Spontaneous Reactive Exfoliation |
| title | Hyperstage Graphite: Electrochemical Synthesis and Spontaneous Reactive Exfoliation |
| title_full | Hyperstage Graphite: Electrochemical Synthesis and Spontaneous Reactive Exfoliation |
| title_fullStr | Hyperstage Graphite: Electrochemical Synthesis and Spontaneous Reactive Exfoliation |
| title_full_unstemmed | Hyperstage Graphite: Electrochemical Synthesis and Spontaneous Reactive Exfoliation |
| title_short | Hyperstage Graphite: Electrochemical Synthesis and Spontaneous Reactive Exfoliation |
| title_sort | hyperstage graphite electrochemical synthesis and spontaneous reactive exfoliation |
| url | http://hdl.handle.net/1721.1/114414 https://orcid.org/0000-0002-4116-4517 https://orcid.org/0000-0003-1338-7841 https://orcid.org/0000-0002-0588-9545 |
| work_keys_str_mv | AT jeonintak hyperstagegraphiteelectrochemicalsynthesisandspontaneousreactiveexfoliation AT yoonbora hyperstagegraphiteelectrochemicalsynthesisandspontaneousreactiveexfoliation AT hemaggie hyperstagegraphiteelectrochemicalsynthesisandspontaneousreactiveexfoliation AT swagertimothym hyperstagegraphiteelectrochemicalsynthesisandspontaneousreactiveexfoliation |