Loading...
Please wait, while we are loading the content...
Similar Documents
Two luminescent lanthanide(iii) metal-organic frameworks as chemosensors for high-efficiency recognition of Cr(vi) anions in aqueous solution.
| Content Provider | Semantic Scholar |
|---|---|
| Author | Zou, Ji-Yong Li, Ling You, Sheng-Yong Liu, Yue-Wei Cui, Hong-Min Cui, Jian-Zhong Zhang, Shao-Wei |
| Copyright Year | 2018 |
| Abstract | Two new lanthanide(iii) metal-organic frameworks (MOFs) {[(CH3)2NH2]2[Ln4(FDA)7(DMF)2]·0.5DMF}n [Ln = Eu (1), and Tb (2)] based on furan-2,5-dicarboxylic acid (H2FDA) have been successfully assembled and well characterized in detail. These MOFs are isostructural and demonstrate 12-connected sqc15 topologies, which are rarely observed in MOF chemistry, especially in lanthanide(iii) MOFs. Moreover, these two MOFs could show a tolerance towards moisture and organic solvents and satisfactory chemical stabilities. More importantly, they exhibit sensitive and selective luminescence quenching response towards Cr2O72- and CrO42- anions in aqueous solution with the average quenching Ksv values of 1.25 × 104 L mol-1 (Cr2O72-) and 3.56 × 103 L mol-1 (CrO42-) for 1 and 1.46 × 104 L mol-1 (Cr2O72-) and 4.35 × 103 L mol-1 (CrO42-) for 2 and the detection limits of 1.14 × 10-4 mol L-1 (Cr2O72-) and 1.12 × 10-4 mol L-1 (CrO42-) for 1 and 7.42 × 10-5 mol L-1 (Cr2O72-) and 1.27 × 10-4 mol L-1 (CrO42-) for 2. The high quenching Ksv values and low detection limits make them more feasible in sensing Cr(vi) anions in aqueous solution. The possible detection mechanism has been discussed in detail. |
| Starting Page | 15694 |
| Ending Page | 15702 |
| Page Count | 9 |
| File Format | PDF HTM / HTML |
| DOI | 10.1039/c8dt03050b |
| PubMed reference number | 30207357 |
| Journal | Medline |
| Volume Number | 47 |
| Issue Number | 44 |
| Alternate Webpage(s) | http://www.rsc.org/suppdata/c8/dt/c8dt03050b/c8dt03050b1.pdf |
| Alternate Webpage(s) | https://doi.org/10.1039/c8dt03050b |
| Journal | Dalton transactions |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
