Colorimetric and electrochemical Pb2+ detection by imine-bridged tetrathiafulvalene-pyridine derivatives

• 来源期刊: 中国科学B辑（英文版）
• 年，卷（期）: 2009,（6）
• 页码范围: 765-770
• 页数: 6页
• 语种: 英文
• DOI: 10.1007/s11426-009-0105-0

摘要

Imine-bridged TTF-π-pyridine derivatives, 2NTTF, 3NTTF and 4NTTF, were synthesized and the cation-binding study was performed. It is noted that with the addition of the micromolar concentration of Pb2+to the solution, these compounds display remarkable changes in solution color, 1H NMR spectra and electrochemical properties. The nitrogen atom of the imine-bridge in 2NTFF not only serves as a π-conjugated spacer but also participates in the sensing and coordinating properties.