化学
发光
检出限
双功能
铕
猝灭(荧光)
尿
肉眼
水溶液
尿酸
配体(生物化学)
无机化学
色谱法
有机化学
荧光
生物化学
催化作用
离子
物理
受体
光电子学
量子力学
作者
Shuting Xu,Bo Zhang,Yun‐Wu Li,Yan Yang,Jun Li,Jiandong Pang
出处
期刊:Inorganic Chemistry
[American Chemical Society]
日期:2023-07-06
卷期号:62 (28): 11168-11178
被引量:13
标识
DOI:10.1021/acs.inorgchem.3c01290
摘要
A new Eu-centered metal–organic framework, [(CH3)2NH2][Eu(cdip)(H2O)] (compound 1), was fabricated by the reaction of Eu(NO3)3·6H2O and a high-symmetry ligand, 5,5′-carbonyldiisophthalic acid (H4cdip). Interestingly, compound 1 exhibits extraordinary stability, including air, thermal, and chemical stabilities, in an aqueous solution with a broad pH range of 1–14, which is rarely seen in the field of metal–organic framework materials. Notably, compound 1 is proved to be an exceptional prospective luminescent sensor for recognizing 1-hydroxypyrene and uric acid both in DMF/H2O solution and human urine with a fast response (1-HP: 10 s; UA: 80 s), high quenching efficiency Ksv (7.01 × 104 M–1 for 1-HP and 5.46 × 104 M–1 for UA in DMF/H2O solution; 2.10 × 104 M–1 for 1-HP and 3.43 × 104 M–1 for UA in human urine), low limit of detection (1.61 μM for 1-HP and 0.54 μM for UA in DMF/H2O solution; 0.71 μM for 1-HP and 0.58 μM for UA in human urine), and remarkable anti-interference ability based on luminescence-quenching effects observable by the naked eye. This work provides a new strategy for the exploration of potential luminescent sensors based on Ln-MOFs for 1-HP, UA, or other biomarkers in biomedical and biological fields.
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