Synthesis of Highly Selective Indole-Based Sensors for Mercuric Ion |
| |
Authors: | Huei-Jyun Huang Jiun-Ly Chir Hsiu-Jung Cheng Shau-Jiun Chen Ching-Han Hu An-Tai Wu |
| |
Institution: | (1) Department of Chemistry, National Changhua University of Education, Changhua, 50058, Taiwan; |
| |
Abstract: | Two indole-based fluorescent chemosensors 1 and 2 were prepared and investigated characteristic features with transition metal ions. Sensors 1 and 2 were selective for Hg2+ ion, among a series of metal ions, in aqueous ethanol (H2O–EtOH, 1:2, v/v) with association constants of 5.74 × 103 and 4.46 × 103 M−1 and detection limits of 7.4 and 6.8 μM, respectively. Computational results revealed that sensor 1 or 2 with Hg2+ ion formed 1:1 complex with a central, sandwich-coordinated Hg2+ ion. Computational calculations provided evidence that a sandwich-coordinated Hg2+ ion center was formed and the polyoxyethylene spacer acted as a scaffold for bringing functional ligands into a suitable
geometry. |
| |
Keywords: | |
本文献已被 PubMed SpringerLink 等数据库收录! |
|