4.8 Article

Highly Concentrated Graphene Solutions via Polymer Enhanced Solvent Exfoliation and Iterative Solvent Exchange

Journal

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
Volume 132, Issue 50, Pages 17661-17663

Publisher

AMER CHEMICAL SOC
DOI: 10.1021/ja107661g

Keywords

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Funding

  1. Department of Energy Institute for Catalysis in Energy Processes [DE-FG02-03ER15457]
  2. National Science Foundation
  3. NSF-NSEC
  4. NSF-MRSEC
  5. Keck Foundation
  6. State of Illinois
  7. U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences [DE-AC02-06CH11357]

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Efficient graphene exfoliation in a nontraditional solvent, ethanol, is achieved through the addition of a stabilizing polymer, ethyl cellulose. Iterative solvent exchange is further demonstrated as a rapid, room-temperature, ultracentrifugation-free approach to concentrate the graphene solution to a level exceeding 1 mg/mL. The outstanding processability and electrical properties of these graphene inks are verified through the realization of aligned graphene polymer nanocomposites and transparent conductive graphene thin films.

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