期刊
ACS APPLIED MATERIALS & INTERFACES
卷 12, 期 48, 页码 54026-54034出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsami.0c13509
关键词
luminescent switching; self-healing; anti-counterfeiting; light-emitting diode; lanthanide
资金
- National Natural Science Foundation of China [21771050]
- Hebei Natural Science Foundation [B2020202002, 206Z1401G]
- Tianjin Natural Science Foundation [18JCYBJC1200]
Luminescent materials with dynamic responsiveness to external stimuli have attracted extensive attention for the development of advanced sensors and smart materials; however, self-healing capability is also of great importance for functional soft materials. An acid/base vapor reversibly triggered luminescence switch with self-healing ability is achieved by incorporating dynamic lanthanide metal-ligand (Ln-L) coordination into the soft polydimethylsiloxane polymer network. The emission color of the resultant luminescent material could be modulated by altering either the Eu3+/Tb3+ molar ratio or the excitation wavelength. The luminescence On-Off reversible switch is realized via direct alternating exposure to acid and base vapor, realizing reversible information encryption and decryption. The dynamic Ln-L cross-link as well as the hydrogen bond in the luminescent material endow it with excellent self-healing capability, high toughness, and stretchability. We believe this acid/base vapor-triggered self-healing switching strategy provides new insights for expanding the application range of luminescent materials.
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