Three Cd(II) MOFs with Different Functional Groups: Selective CO2 Capture and Metal Ions Detection
Three Cd(II) MOFs with Different Functional Groups: Selective CO2 Capture and Metal Ions Detection
复制标题
三种具有不同官能团的 Cd(II) MOF：选择性 CO2 捕获和金属离子检测
DOI：
10.1021/acs.inorgchem.8b00272
复制
发表时间：
2018
影响因子：
4.6
通讯作者：
Zheng He-Gen
中科院分区：
文献类型：
--
作者：
Wang Zhong-Jie;Han Li-Juan;Gao Xiang-Jing;Zheng He-Gen
通过BIPA配体的自组装合成了三种Cd（II）异构骨架{[Cd（BIPA）（IPA）]·DMF}n（1）、{[Cd（BIPA）（HIPA）]·DMF}n（2）和{[Cd（BIPA）（NIPA）]·2 H2O}n（3）（BIPA =双（4-（1H-咪唑-1-基）苯基）胺）和不同的羧基配体（H2 IPA =辛酸，H2 HIPA = 5-羟基辛酸，H2 NIPA = 5-硝基辛酸）与Cd（II）的反应，其分别具有氨基、氨基和酚羟基以及氨基和硝基。1和2的CO2吸收率均大于20 wt %，表明氨基和酚羟基官能团有利于CO2的吸附。研究了它们在金属离子检测中的应用及其机理。结果表明，1和2对Hg ~（2+）和Pb ~（2+）离子具有双响应的光致发光传感器，具有较低的检测浓度和较高的猝灭常数。此外，与大多数MOFs一样，3可以检测痕量的Fe 3+和Cu 2+。
Three Cd(II) iso-frameworks {[Cd(BIPA)(IPA)]·DMF}n(1), {[Cd(BIPA)(HIPA)]·DMF}n(2), and {[Cd(BIPA)(NIPA)]·2H2O}n(3) were synthesized from the self-assembly of the BIPA ligand (BIPA = bis(4-(1H-imidazol-1-yl)phenyl)amine) and different carboxylic ligands (H2IPA = isophthalic acid, H2HIPA = 5-hydroxyisophthalic acid, H2NIPA = 5-nitroisophthalic acid) with Cd(II), which have amino groups, amino and phenolic hydroxyl groups, and amino and nitro groups, respectively. Both1and2exhibit CO2uptakes of more than 20 wt %, indicating that amino and phenolic hydroxyl functionalized groups are beneficial to CO2adsorption. Their applications and mechanisms in detecting metal ions were researched. The results exhibit that1and2are dual-responsive photoluminescent sensors for Hg2+and Pb2+ions with low detection concentration and high quenching constant. Besides, like most MOFs,3can detect a trace quantity of Fe3+and Cu2+.