Journal
ADVANCED MATERIALS
Volume 31, Issue 10, Pages -Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/adma.201806742
Keywords
interfacial assembly; ultrathin graphene films; wetting-induced climbing
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Funding
- National Natural Science Foundation of China [51473008, 51672019, 51403008, 21574006, 21622401, 21875270]
- Fundamental Research Funds for the Central Universities
- National Key Research and Development Program of China [2017YFA0206902]
- 111 Project [B14009]
- Doctoral Found of QUST [0100229020]
- Key Laboratory of Bio-inspired Materials and Interfacial Science, TIPC, CAS
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Owing to inherent 2D structure, marvelous mechanical, electrical, and thermal properties, graphene has great potential as a macroscopic thin film for surface coating, composite, flexible electrode, and sensor. Nevertheless, the production of large-area graphene-based thin film from pristine graphene dispersion is severely impeded by its poor solution processability. In this study, a robust wetting-induced climbing strategy is reported for transferring the interfacially assembled large-area ultrathin pristine graphene film. This strategy can quickly convert solvent-exfoliated pristine graphene dispersion into ultrathin graphene film on various substrates with different materials (glass, metal, plastics, and cloth), shapes (film, fiber, and bulk), and hydrophobic/hydrophilic patterns. It is also applicable to nanoparticles, nanofibers, and other exfoliated 2D nanomaterials for fabricating large-area ultrathin films. Alternate climbing of different ultrathin nanomaterial films allows a layer-by-layer transfer, forming a well-ordered layered composite film with the integration of multiple pristine nanomaterials at nanometer scale. This powerful strategy would greatly promote the development of solvent-exfoliated pristine nanomaterials from dispersions to macroscopic thin film materials.
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