Abstract
Shape memory polymers (SMPs) are a type of stimulus-responsive material capable of recovering their original shape upon application of external stimuli. Introducing photoresponsive functional groups or photothermal conversion materials to SMPs can generate light-driven shape memory effects; such materials are known as light-induced shape memory polymers. Compared with traditional SMPs, light-induced shape memory polymers possess many significant advantages; they are simple to use and can be activated remotely and with precision. This article reviews progress in light-induced SMP research, and includes a definition of the SMPs, the mechanism of light-induced shape memory, and two kinds of light-induced SMPs. Moreover, potential applications, existing challenges, and future developments for light-induced SMPs are discussed.
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