Syntheses and Properties of New Pendant-armed Calix[ 4 ] areneDerivatives as Cesium Selective Ionophore

• 来源期刊: 中国化学（英文版）
• 学科: 化学
• 年，卷（期）: 2001,（2）
• 页码范围: 164-169
• 页数: 6页
• 分类号: O6
• 语种: 英文

摘要

Two new pendant-armed calix[4] arene derivatives 5 and 6 have been synthesized.The study of alkali metal picrates ex- traction indicates that both compounds show prefereoce of ce- sium cation, compounnd 6 in 1,3-altermate conformation has better extractibility for Cs+ than compound 5.The coordina- tion behavior of compound 6 with cesium cation was studied by 1H NMR spectroscopy.The Cs+ selective elctrode based on compound 6 exhibits a linear, near Nernstian response characteristics, the slope is 56.4 mV/decade in the concentra- tion range of 10-4-10-1 mol/L, the selectivity coefficient (log Kdot,Na.) is -3.39.