Initial Graphite Disorder of Carbon Lattice Structures Increase Surface Hydrophilicity and Protein Adsorption
- Authors
- Lee, Jin Woo; Park, Chul-Kyu; Yang, Dongki; Khang, Dongwoo
- Issue Date
- Nov-2016
- Publisher
- AMER SCIENTIFIC PUBLISHERS
- Keywords
- Graphite Disorder; Carbon Lattice Structure; Surface Hydrophilicity; Protein Adsorption
- Citation
- JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY, v.16, no.11, pp.11896 - 11902
- Journal Title
- JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY
- Volume
- 16
- Number
- 11
- Start Page
- 11896
- End Page
- 11902
- URI
- https://scholarworks.bwise.kr/gachon/handle/2020.sw.gachon/7737
- DOI
- 10.1166/jnn.2016.13614
- ISSN
- 1533-4880
- Abstract
- Changes in wettability based on the dispersion properties of carbon nanotubes are generally achieved by chemical functionalization methods using acid treatments. Compared to a highly crystalline carbon structures (i.e., single-walled carbon nanotube and fullerene), low crystalline carbon structures (i.e., multi-wall carbon nanotubes and graphene) are easily functionalized in a water-based solution and exhibit excellent dispersity. However, to date, it has not been clear why low crystalline carbon structures exhibit superior dispersity relative to single-walled carbon nanotubes. In this study, we found that the initial crystallinity of the outer layers of a carbon lattice constitutes a significant material factor for determining further non-crystallization. As non-crystallized carbon lattice structures (corresponding to the D band in Raman analysis) initially increase, they can subsequently be further increased by means of ultra-sonication without any chemical treatment. Importantly, protein adsorption is more increased by reducing the surface crystallinity than a highly crystalline carbon lattice structure.
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