Journal
NANO LETTERS
Volume 12, Issue 4, Pages 1996-2002Publisher
AMER CHEMICAL SOC
DOI: 10.1021/nl2045952
Keywords
Graphene; graphene oxide; encapsulation; folding; core-shell structures; biocompatibility
Categories
Funding
- NSF Materials Research Science and Engineering Center at Brown
- NSF [CBET-1132446, CMMI-1129703]
- NIEHS [P42 ES013660, R01 ES016178]
- Korea Institute of Geoscience and Mineral Resources (KIGAM)
- Ministry of Knowledge Economy of Korea
- Alfred P. Sloan Foundation
- Initiative for Sustainability and Energy at Northwestern (ISEN)
- Directorate For Engineering
- Div Of Chem, Bioeng, Env, & Transp Sys [1132446] Funding Source: National Science Foundation
- Directorate For Engineering
- Div Of Civil, Mechanical, & Manufact Inn [1308396] Funding Source: National Science Foundation
- Div Of Civil, Mechanical, & Manufact Inn
- Directorate For Engineering [1129703] Funding Source: National Science Foundation
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Water micro droplets containing graphene oxide and a second solute are shown to spontaneously segregate into sack-cargo nanostructures upon drying. Analytical modeling and molecular dynamics suggest the sacks form when slow-diffusing graphene oxide preferentially accumulates and adsorbs at the receding air water interface, followed by capillary collapse. Cargo-filled graphene nanosacks can be nanomanufactured by a simple, continuous, scalable process and are promising for many applications where nanoscale materials should be isolated from the environment or biological tissue.
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