化学
微型多孔材料
金属有机骨架
发光
镧系元素
荧光
选择性
水溶液
光致发光
水溶液中的金属离子
检出限
无机化学
金属
组合化学
高分子化学
光化学
离子
有机化学
吸附
色谱法
催化作用
物理
光学
量子力学
光电子学
作者
Jun Luo,Bao‐Shu Liu,Xinrong Zhang,Ruimin Xu
标识
DOI:10.1016/j.molstruc.2018.09.091
摘要
A 3D microporous metal-organic framework Al(OH)(bpydc) (MOF-253, bpydc = 2,2′-bipyridyl-5,5′-dicarboxylic acid) containing uncoordinated bipyridyl groups was synthesized and structurally characterized. Then the uncoordinated bipyridyl groups were used as postsynthetic modification sites to encapsulate Eu3+ cations into the pores of MOF-253. The intense luminescence of Eu3+ incorporated MOF-253 products Eu3+@MOF-253 indicates that the framework is rigid, permanently porous and non-coordinated bipyridyl groups are efficient scaffolds for hosting and sensitizing Eu3+ cations. Photoluminescence measurement demonstrates that Eu3+@MOF-253 displays excellent selectivity, and high sensitivity (detection limit, 0.66 μM) for Cu2+ ions in aqueous solution due to a great depression of the Eu3+-luminescence, which represents a rare Cu2+ fluorescent probe based on lanthanide-loaded MOFs constructed by postsynthetic method (PSM).
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