A metal-organic framework as a "turn on" fluorescent sensor for aluminum ions
A metal-organic framework as a "turn on" fluorescent sensor for aluminum ions
复制标题
金属有机框架作为铝离子的“开启”荧光传感器
DOI：
10.1039/c6qi00362a
复制
发表时间：
2016
影响因子：
7
通讯作者：
Bu Xian-He
中科院分区：
文献类型：
--
作者：
Yu Mei-Hui;Hu Tong-Liang;Bu Xian-He
Aluminum ions are harmful to human health and can damage the central nervous system leading to brain cell injury in excessive amounts. Hence, sensing and detection of Al3+ ions are important and require a method with high sensitivity and high selectivity. Here, a metal–organic framework {[Zn2(O-BTC)(4,4′-BPY)0.5(H2O)3]·(H2O)1.5·(DMA)0.5}n (NUM-2) was constructed by ligands 2-hydroxy-benzene-l,3,5-tricarboxylic acid (HO-H3BTC) and 4,4′-bipyridine (4,4′-BPY) based upon chain-shaped secondary building units (SBUs). NUM-2 itself exhibits extremely weak fluorescence emission, however, the luminescence intensity of NUM-2 is enhanced obviously when there are Al3+ ions in ethanol solutions, and the detection limit calculated using 3σ/k could reach 0.10 ppm, indicating that NUM-2 could be used as an efficient turn-on-based fluorescent sensor with high sensitivity and high selectivity for Al3+ ions.
