Lanthanides have been extensively used as important luminescent materials because of their excellent optical properties.However,the luminescence intensities of Ln^(3+)ions from direct excitation are often hindered due...Lanthanides have been extensively used as important luminescent materials because of their excellent optical properties.However,the luminescence intensities of Ln^(3+)ions from direct excitation are often hindered due to the small absorption coefficient and low luminous efficiency.The“antenna”effect is an effective strategy for sensitizing the luminescence of Ln3+ions.In this work,two metal–organic zeolites(HNU-25 and HNU-26)were synthesized through a mixed ligand strategy.Both of them can serve as efficient sensors for the Tb^(3+)ion by sensitizing the characteristic luminescence of the Tb^(3+)ion.The different responses of sensitization depend on the intramolecular energy transfer between the frameworks and the Ln3+ions.These effective behaviors provide an insight into the design and synthesis of chemical sensors for Ln^(3+)ions.展开更多
基金supported by the Natural Science Foundation of Hainan Province(217018 and 217055)the National Natural Science Foundation of China(21761010)+1 种基金the Hainan University start-up fund(kyqd1654 and KYQD(ZR)1806)the Open Funds of the State Key Laboratory of Rare Earth Resource Utilization(RERU2018009).
文摘Lanthanides have been extensively used as important luminescent materials because of their excellent optical properties.However,the luminescence intensities of Ln^(3+)ions from direct excitation are often hindered due to the small absorption coefficient and low luminous efficiency.The“antenna”effect is an effective strategy for sensitizing the luminescence of Ln3+ions.In this work,two metal–organic zeolites(HNU-25 and HNU-26)were synthesized through a mixed ligand strategy.Both of them can serve as efficient sensors for the Tb^(3+)ion by sensitizing the characteristic luminescence of the Tb^(3+)ion.The different responses of sensitization depend on the intramolecular energy transfer between the frameworks and the Ln3+ions.These effective behaviors provide an insight into the design and synthesis of chemical sensors for Ln^(3+)ions.
