Luminescent Two-Way Reversible Shape Memory Polymers Based on Hydroxyl-yne Click Polymerization Reaction

10 December 2019, Version 1
This content is a preprint and has not undergone peer review at the time of posting.

Abstract

Luminescent Two-way reversible shape memory polymers (2W-SMPs) are designed and fabricated by introducing aggregation-induced emission (AIE) unit of tetraphenylethylene (TPE) into semi-crystalline polymer networks via a simple hydroxyl-yne click polymerization under mild conditions. A TPE-free polymer network as control is also prepared using the same polymerization. Both polymer networks are able to perform excellent reversible shape motions, such as bending-unbending, coiling-uncoiling, and closing-blooming, when they are exposed to cool and warm water. A luminescent robotic gripper is designed, which can grab and release weights, and its payload-to-weight ratio is much higher than the ratio possessed by many industrial robotic grippers. Moreover, the double anti-counterfeiting capability of TPE-containing polymer is also demonstrated.

Keywords

shape memory polymer
aggregation-induced emission
reversible shape change
robotic gripper
Anti-counterfeiting trade agreement

Supplementary materials

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Movie S1 PCL coiling-uncoiling
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Movie S2 PCL-TPE coiling-uncoiliing
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Movie S3 PCL-TPE coiling-uncoiling UV light
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Movie S4 grasping and releasing capability
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