| 초록 |
Control of mechanical switching of materials by external stimuli such as light, temperature, pH, electric field and chemical addition has attracted great attention, not only in relation to biotechnology, but also for optical application because of their scientific and technological significance. Among these materials, photo-stimuli responsive polymers containing photochromic compounds such as azobenzene, spiropyran, and cinnamic acid groups have been the subject of intense interest in recent years, because of their potential use in various optical applications, such as nonlinear optics, erasable memory storage and processing, electrooptical displays, and mechanical actuators. Especially we focus our attention on light-driven actuators such as artificial muscle, motor, and valve. We summarize the photomechanical effects in liquid crystal elastomer, amorphous polymer, monolayer, and supramolecules containing azobenzene, respectively. |
