| 초록 |
Self-assembly of block copolymers constitute an extensively studied area in polymer chemistry and engineering. The most used methods involve slow solvent change under highly dilute conditions. Recently, light-induced self-assembly of poly(p-phenylenevinylene) (PPV) block copolymers have been reported. This method involves photochemical isomerization(cis to trans) of the PPV backbone which, in turn, dramatically increase the segment’s crystallinity. Despite such progress, controlled light-induced self-assembly of block copolymers is still scarce, and new methods of inducing robust nanostructures is desirable. We herein report a light-induced self-assembly of photo induced cleavage of an α-diketone bridge from the central phenylene ring of acene derivative-bearing block copolymers. The self-assembly is the result of change in solubility by photo cleavage of an α-diketone bridge in the backbone, resulting in stimulus-induced self-assembly behavior with numerous controllable parameters. |
