| 초록 |
We newly designed and synthesized two kinds of photopolymerizable dumbbell-shaped diacetylene liquid crystal (LC) monomers with dicarboxylic acid group at the center. These monomers have chemically connected tails, such as hydrophobic alkyl chains (abbreviated as AT3DA) and amphiphilic biphenyl mesogens (abbreviated as BP3DA). For AT3DA, it is suitable for the topochemical reaction because of the lateral close molecular packing between diacetylene moieties. Although BP3DA have highly ordered crystal phases, photopolymerization did not occur. Since AT3DA formed the fibrous structure in toluene via hydrogen bonding, consequent photopolymerization stabilized the physical gel state via the covalently connected poly diacetylene network. Moreover, the AT3DA gel was readily changed from the reddish gel state to the orange sol state when the polymerized AT3DA gel was heated. This work was supported by the BK21 Plus, the BRL 2015042417, and Mid-Career Researcher Program (2016R1A2B2011041). |
