Synthesis of a Tweezer-like Bis(phenylthiapropoxy)calix[4]arene as a Cation/π Enhanced Sensor for Ion-Selective Electrodes

• 来源期刊: 中国化学（英文版）
• 年，卷（期）: 2002,（10）
• 页码范围: 1109-1114
• 页数: 6页
• 语种: 英文

摘要

Two novel 25,27-dihydroxy-26,28-bis(3-phenylthiapropoxy)-calix[4]arene (3) and 25,27-dihydroxy-26,28-bis(3-phenylthiapropoxy)-5,11, 17, 23-tetra-tert-butylcalix[4] arene (4) were synthesized for the evaluation of their ion-selectivity in ion-selective electrodes (ISEs). ISEs based on 3 and 4 as neutral ionophores were prepared, and their selectivity coefficients for Ag+ (lg Kpot Ag,M) were investigated against other alkali metal,alkaline-earth metal, aluninum, thallium(Ⅰ), lead and some transition metal ions using the separate solution method (SSM). These ISEs showed excellent Ag + selectivity over most of the interfering cations examined, except for Hg2 + and Fe2 + having relative smaller interference (lgKpot Ag,M≤ -2.1).