| 초록 |
The anisotropically aligned H-SSY/PVP nanofiber mats were successfully fabricated by electrospinning and orientation techniques. Molecular packing structures and optical behaviors of the anisotropically aligned H-SSY/PVP nanofiber mats were investigated by the combined various techniques. Based on the results, it was realized that H-SSY molecules kept a flat conformation, self-assembled to nanocolumns and formed a glassy N phase in the H-SSY/PVP nanofiber. When the H-SSY/PVP nanofiber mats were annealed above Tg of PVP, H-SSY nanocolumns further self-organized to form crystals. This means that the electrospun nanofiber below the Tg of PVP was in a metastable state. This research was supported by Basic Science Research Program through the National Research Foundation of Korea(NRF) funded by the Ministry of Education (2013R1A1A2007238), Global Ph.D Fellowship Program (2013H1A2A1033907), and BK21 PLUS Program, Korea. |
