摘要
Paper-based devices have attracted extensive attention due to their portability,low-cost,ubiquity,low environmental footprint and ease of operation.In the present study,two lanthanide complexes,namely[Eu(PBA)3(H2O)2](Eu-PBA)and[Tb(HPBA)2(NO3)3](Tb-HPBA)were synthesized using an amide-typeβ-diketone building block,N-(2-pyridinyl)benzoylacetamide(HPBA),which is capable of changing its energylevel to match that of Tb3+and Eu3+ions in an acid-base environment.This feature was used for the design and assembly of a simple and cost-effective paper-based lanthanide smart device(abbreviated as Paper-Eu/Tb),which was obtained by impregnating the filter paper with both the Eu-PBA and Tb-HPBA complexes;related homometallic Paper-Eu and Paper-Tb materials were also generated and characterized for comparative purposes.The obtained Paper-Eu/Tb device shows excellent luminescence properties,thus allowing its efficient use as a smart sensor for the naked-eye detection of various acid-base vapours with quick response,good reversibility and selectivity.A similar concept and the resulting paperbased device was also successfully expanded for other applications that include anti-counterfeiting and logic gate systems.Full characterization of the paper-based materials and examples of their use are described.
基金
supported by the National Natural Science Foundation of China(Projects 21471071,21431002)
the National Science Foundation for Fostering Talents in Basic Research of the National Natural Science Foundation of China(Project J1103307).
