| 초록 |
Melanin, which is natural pigment, has a potential possibility as an electrical conductive material. In this research, we used 100-150 nm diameter natural melanin nano-particles (NMNPs), extracted from cuttlefish ink, and made the uniformly covered NMNP film by layer-by-layer assembly technique (LBL) with poly(vinyl alcohol) (PVA) on a glass substrate. We optimized LBL condition by varying various solvents and dipping times to make optimum NMNP film, which was characterized by UV-Vis absorbance, scanning electron microscope (SEM) and atomic force microscope (AFM). This film shows electrochemically conductive properties on an ITO electrode by providing improved charge storage capacity. Furthermore, this composite film also demonstrates structural colors, and proves biocompatibility with PC12 cell. These results suggest that our NMNP film has the high potential for use as biocompatible optoelectronic materials for bio-organic electronics, neural interfaces and implantable biosensors. |
