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US 11,770,972 B2Granted
Multifunctional photoresponsive materials exhibiting aggregation-induced emission and solid-state actuation
AssigneeThe Hong Kong University of Science and Technology
InventorsBenzhong Tang, Haoran Wang, Hao Xing
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Abstract
Provided herein are multifunctional photoresponsive compositions that can undergo conversion from an aggregation-caused quenching (ACQ) state to an aggregation-induced emission (AIE) state and macroscopic actuation and systems comprising the same and methods of use thereof.
Claims4
A method for conversion of a first compound exhibiting aggregation-caused quenching (ACQ) to a second compound exhibiting aggregation-induced emission (AIE), the method comprising:
- providing a crystal comprising the first compound, wherein the first compound is:
- and
- photoirradiating the first compound with ultraviolet (UV) light causing it to undergo photodimerization by [2+2] cycloaddition thereby forming the second compound, wherein the second compound is:
- wherein photodimerization of the first compound optionally causes macroscopic actuation of the crystal.
1 more element
A photoresponsive actuation system, the system comprising:
- a UV light source;
- and
- a photoresponsive actuator element comprising a crystal, wherein the crystal comprises a first compound, wherein the first compound is:
- or a conjugate salt thereof, wherein photoirradiating the first compound with UV light from the UV light source causes the first compound to undergo photodimerization by [2+2] cycloaddition thereby forming a second compound, wherein the second compound is at least one compound selected from the group consisting of:
- wherein photodimerization of the first compound causes actuation of the photoresponsive actuator element.
2 more elements
Dependencies are inferred from the claim text.