Abstract
Light-responsive soft actuators are highly demanded due to their increasing applications in soft robotics and biomimetic devices. However, for light-driven soft actuators, it is challenging to eliminate their reliance on UV light as well as it is required to address the issue of poor mechanical strength. Here, a supramolecular strategy is used for the synthesis of a functionalized anthracene dye which absorbs light in the visible region due to red-shift in the absorption band. This photoresponsive functionalized anthracene dye, mixed in the PVA matrix, has been used as a soft actuator acting as a microgripper to grasp, pick up, and transport cargo in response to the blue light. As a new finding, a two-fold increase in the bending angle deformation was achieved which is significantly greater than any other previously reported anthracene-based visible light-responsive soft actuator. This work broadens the horizon of the natural light-responsive soft actuators which may find applications in soft robotics, biomimetic grippers, surgical instruments, etc.
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