Abstract
Inspired by the amphiphilicity of graphene oxide (GO), the surface of water is used as a template for the assembly of a GO film. Methacrylate- functionalized GO sheets can be cross-linked instantaneously at the water-air interface to form a highly wrinkled membrane spreading over an extended area. The multiple covalent linkages amongst the GO sheets enhances the in-plane stiffness of the film compared to noncovalently bonded GO films. The highly convoluted GO membrane can be used in two applications: the promoting of spontaneous stem-cell differentiation towards bone cell lineage without any chemical inducers, and for supercapacitor electrodes. Due to reduced van der Waals restacking, capacitance values up to 211 F g -1 can be obtained. The scalable and inexpensive nature of this assembly route enables the engineering of membranes for applications in regenerative medicine and energy-storage devices where secondary structures like nanotopography and porosity are important performance enhancers.
| Original language | English |
|---|---|
| Pages (from-to) | 423-431 |
| Number of pages | 9 |
| Journal | Small |
| Volume | 8 |
| Issue number | 3 |
| DOIs | |
| Publication status | Published - 2012 Feb 6 |
All Science Journal Classification (ASJC) codes
- Engineering (miscellaneous)
- General Chemistry
- General Materials Science
- Biotechnology
- Biomaterials