| 초록 |
An asymmetric macrogelator (1AZ3B) was newly synthesized by the chemically bridging a photoisomerizable azobenzene (1AZ) and a biphenyl-based (3B) dendron with a 1,4-phenylenediformamide connector. The 1AZ3B was self-assembled into a layered superstructure in bulk state while1AZ3B formed a three-dimensional (3D) network organogel in solution. Upon irradiating UV light onto the 3D network organogel, the solvent of the organogel was squeezed and the 3D network was converted to the layered morphology. It was founded that the metastable 3D network organogels were fabricated mainly due to the nanophase separation in solution. UV isomerization of 1AZ3B provided sufficient molecular mobility to form strong hydrogen bonds for the construction of the stable layered superstructure. This work was supported by the MOTIE/KDRC (10051334), Mid-Career Researcher Program (2016R1A2B2011041), and Global Ph. D. Fellowship Program (NRF-2016H1A2A1907561). |
