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Thermally Stable, Recyclable, and Luminescent Coordination Adaptable Network Base on a Tb^3+^ Complexes Cross-Linker by Qi-Sheng Huang; Pei-Chen Zhao; Zi-Han Zhao; Cheng-Hui Li is a Engineering article available to read on EtoBox.

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Covalent adaptable networks (CANs) are receiving intense attention due to the growing demand for sustainable materials, as they show thermoset-like behavior but can also be (re)processed, recycled, and healed. However, most CANs reported so far have a trade-off between mechanical strength and reversible properties, often show performance reduction after reprocessing and/or recycling, deform severely during service, or lack photoelectrical functions. In this work, we designed and synthesized a coordination adaptable network (CoAN) cross-linked by Tb 3+ complexes with β-diketone ligands. The as-prepared CoAN demonstrates excellent (re)processability and recyclability under mild conditions without significant decline in mechanical properties. Meanwhile, it shows temperature-insensitive mechanical strength (Young's modulus of 134 MPa at 25 °C with a soft-rigid switching ability (σ, defined as G′ max /G′ min within a certain temperature range) of only 8.9 from 20 to 140 °C and excellent creep resistance even at elevated temperatures (creep strains <0.9% at 120 °C). Moreover, the CoAN exhibits stimuli-responsive fluorescence properties, leading to its application in information encryptio

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Author

Qi-Sheng Huang; Pei-Chen Zhao; Zi-Han Zhao; Cheng-Hui Li

Publisher

American Chemical Society (ACS)

Published

2023

Language

EN

Field

Engineering (Physical Sciences)