A selective colorimetric sensor for Cu2+ in aqueous solution

作者：Liu Yen Wen; Chir Jiun Ly; Wang Shan Teng; Wu An Tai^*

来源：Inorganic Chemistry Communications, 2014, 45: 112-115.

DOI：10.1016/j.inoche.2014.04.017

• Schiff-base
• Colorimetric
• Chemosensor
• Pyridine
• Naked-eye

We synthesized a novel Schiff-based receptor 1, and investigated its binding properties toward various metal ions. Receptor 1 showed a dramatic color change from colorless to red which could easily be detected by the naked-eye upon binding with Cu2+. The association constant for 1 center dot Cu2+ in DMSO/H2O (v/v, 1:9) was calculated to be 1.98 x 10(8) M-1. With the addition of Na(2)EDTA to a mixture of receptor 1 and Cu2+, the solution changed back to its original colorless appearance instantly.

• 出版日期2014-7