| 초록 |
An achiral amphiphilic tetrathiafulvalene molecule (abbreviated as AT2F) was newly designed and synthesized. The governing driving forces for the self-assembly of AT2F were the face-to-face π-π interaction between T2F groups and the nanophase separation between rigid T2F groups, flexible hydrophobic alkyl chains and hydrophilic ethylene oxide tails. The morphology observed by using transmission electron microscopy, atomic force microscopy, and the polarized optical microscopy showed that the AT2F formed not only flat ribbons but also scrolls and helixes, in which the self-assembled ribbons further aggregated themselves to formulate the fibrous hierarchical structures. From the combined the experimental results, it was confirmed that the scrolls and helices were induced by the unbalanced surface stresses generated during the crystallization process. This work was supported by the BRL 2015042417, MOTIE/KDRC 10051334 and the BK21 Plus program, Korea. |
