Construction of a Sensitive Fluorescence Sensor for Convenient 1-HP and UA Detection Relied on a Stable Eu-MOF
Shuting Xu, Jiandong Pang, Bo Zhang, Yun‐Wu Li, Yan Yang, Jun Li
Abstract
Herein, a new three-dimensional Eu-MOF, [Me 2 NH 2 ] 2 [Eu 3 (mtptc) 2 (CH 3 COO) 3 ]·DMA·H 2 O ( 1 ), has been elaborately prepared through the reaction of europium nitrate and a symmetric tetra-carboxylate ligand, 5′-methyl-[1,1′:3′,1″-triphenyl]-3,3″,5,5″-tetracarboxylic acid (H 4 mtptc). Noteworthily, compound 1 represents marked stability covering acid–base stability in the pH range of 2–14, thermal stability maintaining skeleton integrity when heated at 350 °C, solvent stability in some common solvents, and air stability in open air more than 4 weeks characterized by powder X-ray diffraction (XRD) and temperature-dependent powder XRD analyses. Remarkably, luminescent sensing measurements manifest that compound 1 is deemed as a hopeful fluorescent probe for rapid recognition of 1-hydroxypyrene (1-HP) and uric acid (UA) equipped with excellent sensitivity with a quenching efficiency of 99.1% for 1-HP and 97.4% for UA. Besides, the luminescent sensing performance of compound 1 toward 1-HP and UA possesses super stability in dimethylformamide/H 2 O solution, N -(2-hydroxyethyl)piperazine- N ′-ethanesulfonic acid buffer solution, and human urine.