Journal
CHEMISTRY OF MATERIALS
Volume 22, Issue 14, Pages 4153-4157Publisher
AMER CHEMICAL SOC
DOI: 10.1021/cm100454g
Keywords
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Funding
- NASA through the University Research, Engineering and Technology Institute (URETI) [NCC-1-02037]
- DARPA N/MEMS S&T Fundamentals Program
- ARO [W99INF09-1-0541]
- NSF-MRSEC [0520513]
- NSF-NSEC
- Keck Foundation
- state of Illinois
- Northwestern University
- Division Of Materials Research
- Direct For Mathematical & Physical Scien [0520513] Funding Source: National Science Foundation
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Graphene oxide paper can be systematically modified with alkylamines in both solution- and vapor-phase, with the latter process being significantly slower. After removal of physisorbed amine, the increases in gallery spacing, physical thickness, and mass of amine-modified papers can be directly correlated to the length of the intercalated alkyl chain. While the tensile strength of the modified papers slightly decreases with increasing amine lengths, their effective graphene oxide moduli were essentially unchanged, suggesting that graphene oxide is the sole contributor to the stiffness of amine-modified papers.
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