Triazole- and azo-coupled calix[4]arene as a highly sensitive chromogenic sensor for Ca and Pb ions |
| |
Authors: | Kai-Chi Chang Gene-Hsiang Lee |
| |
Institution: | a Department of Applied Chemistry, National Chiao-Tung University, Hsinchu 30050, Taiwan, ROC b Instrumentation Center, National Taiwan University, Taipei 106, Taiwan, ROC |
| |
Abstract: | A novel chromogenic calix4]arene 3, which has within a molecule both the triazoles and the hydroxyl azophenols as the metal-binding sites and the azophenol moiety as a coloration sites was designed and synthesized. Calix4]arene 3 is highly sensitive to Ca2+ and Pb2+ ions, which can be detected by the naked eye. Furthermore, the association constants for the 1:1 complexes of 3·Ca2+ and 3·Pb2+ were determined to be 7.06 × 104 M−1 and 8.57 × 103 M−1, respectively. |
| |
Keywords: | |
本文献已被 ScienceDirect 等数据库收录! |
|