Journal
NANOSCALE
Volume 13, Issue 26, Pages 11380-11386Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/d1nr01642c
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Funding
- National Natural Science Foundation of China [21871075, 21771050]
- Natural Science Foundation of Hebei Province [B2018202134]
- Tianjin Natural Science Foundation [19JCQNJC04900]
- Program for Top 100 Innovative Talents in Colleges and Universities of Hebei Province [SLRC2019023]
- Hebei Province Education Department Degree Office Higher Education Postgraduate Innovation Funding Project [CXZZBS2021023]
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Luminescent hydrogels have attracted significant interest due to their biocompatibility and optical properties, but most of them lack sufficient mechanical properties and smart luminescence. A smart luminescent hydrogel with superior mechanical performance was successfully developed by in situ copolymerization of acrylamide monomers and lanthanide loaded clay nanosheets.
Due to their inherent biocompatibility and unique optical properties, luminescent hydrogels have recently garnered tremendous interest. However, most of the explored luminescent hydrogels cannot well meet the requirements of both sufficient mechanical properties and smart luminescence. Here we report a smart luminescent hydrogel with superior mechanical performance by in situ copolymerization of the acrylamide monomers and lanthanide loaded clay nanosheets. The Eu-DPA@clay nanosheets emitting center can not only be well dispersed in aqueous solution, but also maintain robust luminescence. Interestingly, the additional interaction between the Eu-DPA@clay nanosheets and the polymer network endows the hydrogel with excellent mechanical properties. Moreover, a luminescence on/off switch is also achieved by alternative acid and base stimuli, which may have potential applications in smart luminescent devices.
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