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Dynamic AIE crosslinks in liquid crystal networks: visualizing for actuation‐guiding, re‐bonding for actuation‐altering.
- Source :
-
Angewandte Chemie . Nov2022, Vol. 134 Issue 44, p1-8. 8p. - Publication Year :
- 2022
-
Abstract
- Covalent adaptable liquid crystal networks (CALCNs) are highly potential actuating materials due to their actuation properties and shape reprogrammability. Given the importance of network crosslinking state in a CALCN actuator, we sought an all‐in‐one strategy to probe and visualize its dynamic network while ensuring actuation and reprogramming. Here, tetraphenylethylene derivatives were incorporated into liquid crystal networks via the Diels–Alder (DA) reaction, acting simultaneously as reversible crosslinkers and aggregation‐induced emission (AIE) fluorescent probes. The thermally tunable fluorescence of the resulting network can correlate to and thus visualize the actuator's crosslinking status, actuation capability and temperature in real‐time and in situ, yielding an intriguing actuation limit‐alerting function. Furthermore, we verified unprecedented reprogrammability of the AIE‐type CALCNs through both associative and dissociative exchange mechanisms of DA chemistry. [ABSTRACT FROM AUTHOR]
- Subjects :
- *LIQUID crystals
*POLYMER liquid crystals
*FLUORESCENT probes
*POLYMER networks
Subjects
Details
- Language :
- English
- ISSN :
- 00448249
- Volume :
- 134
- Issue :
- 44
- Database :
- Academic Search Index
- Journal :
- Angewandte Chemie
- Publication Type :
- Academic Journal
- Accession number :
- 159864317
- Full Text :
- https://doi.org/10.1002/ange.202211959