| 초록 |
We have prepared multilayer nanostructural ultrathin films through layer-by-layer spin self-assembly method using poly(p-phenylene vinylene) /montmorillonite. Sodium montmorillonite particles exfoliated into single sheets(or thin platelets composed 2-3 sheets) through the experiment and cationic PPV precursor and anionic MMT plates were spin self-assembled by electrostatic attraction. The structure of self-assembled [PPV/MMT]n films were characterized by contact angle measurement, UV/Vis spectroscopy, X-ray diffraction, X-ray reflectivity, atomic force microscopy, transmission electron microscopy. Due to the simple procedure of spin self-assembly consisting of repetitive dropping, spin-coating and spin-washing of oppositely charged materials, multiplayer ultrathin films could be prepared much faster when compared with those prepared via conventional self-assembly method. Electroluminescence(EL) devices composed of alternating poly(p-phenylene vinylene) and exfoliated montmorillonite films prepared by spin self-assembly method show higher environmental stability and the luminescent quantum efficiency. |
