A colorimetric chemosensor based on new water-soluble PODIPY dye for Hg~(2+) detection

• 作 者: Xin-Dong Jiang Hai-Feng Yu Jiu-Li Zhao Chang-Liang Sun Ying Xie Lin-Jiu Xiao
• 机 构: College of Applied Chemistry, Key Laboratory of Rare-Earth Chemistry and Applying Liaoning Province,
• 出 处: Chinese Chemical Letters
• 发表日期: 2015年10期
• 关键词: phosphorus violet strips remarkable selectivity hexane solubility dissolved sili

The phosphorus-containing PODIPY 1 as a chemosensor can detect Hg~(2+) by a color change from pink to violet red without the use of any instrumentation. PODIPY 1 was selective to Hg~(2+)with a remarkable absorption change, and addition of other relevant metal ions caused almost no absorption change. The new PODIPY dye 1 was sensitive to various concentrations of Hg~(2+). The energy gap between the HOMO and LUMO of the metal complex 1–Hg~(2+)is smaller than that of chemosensor 1, which is in good agreement with the red shift in the absorption observed upon treatment of 1 with Hg~(2+). The 1-based test strips were easily fabricated and low-cost, useful in practical and efficient Hg~(2+)test kits.

The phosphorus-containing PODIPY 1 as a chemosensor can detect Hg ~ (2+) by a color change from pink to violet red without the use of any instrumentation. PODIPY 1 was selective to Hg 2+ with a remarkable absorption change, The new gap PODIPY dye 1 was sensitive to various concentrations of Hg ~ (2+). The energy gap between the HOMO and LUMO of the metal complex 1-Hg ~ (2+ ) is smaller than that of chemosensor 1, which is in good agreement with the red shift in the absorption observed upon treatment of 1 with Hg 2+. The 1-based test strips were easily fabricated and low-cost, useful in practical and efficient Hg ~ (2+) test kits.