期刊
MACROMOLECULES
卷 53, 期 3, 页码 905-912出版社
AMER CHEMICAL SOC
DOI: 10.1021/acs.macromol.9b02221
关键词
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资金
- National Key Research and Development Program of China [2017YFA0204503, 2017YFA0207800]
- National Natural Science Foundation of China [21734006, 21975178, 21522405]
- Thousand Youth Talents Plan
Mechanoresponsive polymers with intense red emission are highly desirable in view of the strong penetrability and high resolution of red luminescence. Herein we introduce the sensitized luminescence of rare-earth Eu(III) complexes into the mechanochemiluminescence from polymeric dioxetane in a covalent way. By controlling the energy-transfer process from mechanically broken dioxetane to the Eu(III) center, bright red emission from transparent poly(methyl acrylate) films was achieved for the first time. Importantly, mechanoluminescence sensitivity is greatly improved, enabling the location and timing of bond scission with high resolution. A sensitive stretchable device with the polymer film as an emissive layer was fabricated by a facile surface-engineering method, which can emit patterned red light upon deformation. This sensitized mechanoluminescence design thus expands the useful space of luminescent stress probes.
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