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A hydroxyl-functionalized 3D porous gadolinium-organic framework platform for drug delivery, imaging and gas separation

Journal 2020 · IF 2.726 · 发表于 2020 年 6 月 27 日
作者: Fenglan Liang,Liang Qin,Jingrong Xu,Shumei Li,Chumin Luo,Huan Huang,Deyun Ma,Zhi Li,Jun Xu
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摘要

A water-stable 3D porous Gd-based MOF decorated by hydroxyl groups with irl topology, {[Gd 2 (OH-BDC) 2 (DMF) 2 (H 2 O) 2 ]∙(H 2 O)} n ( 1 ) (OH–H 2 BDC ​= ​2,5-dihydroxyterephthalic acid, DMF ​= ​dimethylformamide) has been prepared and were structurally characterized. The results of TGA and PXRD revealed that 1 shows high thermal stability up to 350 ​°C and good water stability. 1 exhibits a 3D framework with 1D channel of 8.4 ​× ​8.1 ​Å 2 parallel to the c axis. Activated 1 ( 1a ) shows an 5-Fluorouracil payload of 23.2 ​wt% and higher signal enhancement ability than Gd-DTPA with the r 1 value being 31.20 ​mM −1  ​S −1 . Meanwhile, 1a exhibits selective CO 2 uptake compare with CH 4 , N 2 , O 2 , and H 2 at room temperature under simulation condition. Furthermore, the magnetic property , in vitro MTT assays and in vivo Zebrafish toxicity tests of 1 have also been carried out.