基于多重氢键组装的双杯冠合成及对铯离子的络合  

Synthesis of a Bis-calixcrown Based on Multiple Hydrogen Bonds and Complexation towards Cesium Ion

作　　者：金永东[1] 刘云[1] 杨永安[1] 张东[2] 但贵萍[2] 杜鹃 袁立华[1] 冯文[1] 

机构地区：[1]辐射物理与技术教育部重点实验室四川大学化学学院原子核科学技术研究所,成都610064 [2]中国工程物理研究院核物理与化学研究所,绵阳621900

出　　处：《有机化学》2011年第11期1864-1869,共6页Chinese Journal of Organic Chemistry

基　　金：中国工程物理研究院核物理与化学研究所核退役(No.HG2008061)资助项目

摘　　要：合成了一种基于多重氢键组装形成的新型双杯冠化合物,利用核磁共振氢谱(1H NMR)和碳谱(13C NMR)以及高分辨质谱(ESI-HRMS)对组装前体分子结构进行了表征.通过一维和二维核磁共振氢谱(2D NOESY)研究了该双杯冠的的自组装结构,并采用核磁共振和紫外-可见光谱的方法测定了其对铯离子的络合.实验表明,通过氢键组装形成的双杯冠化合物,由于阻止了单杯冠分子内组装而限制了冠醚环构象改变,其萃取率由单杯冠的82%提高到96%.A novel bis-calixcrown formed by multiple hydrogen bonds was reported in this paper.Its struc-ture was characterized by proton nuclear magnetic resonance（1H NMR） spectroscopy,carbon-13 nuclear magnetic resonance（13C NMR） spectroscopy,and high-resolution mass spectrometry（ESI-HRMS）.The self-assembly structure was investigated by one-and two-dimension nuclear magnetic resonance（2D NO-ESY） spectra.The complexation towards cesium ions was examined by 1H NMR and UV-vis spectra.The results demonstrated that the bis-calixcrown assembled through multiple hydrogen bonds provided an in-creased extractability of 96% compared to that of 84% for the mono-calixcrown.This is attributed to the outcome of the limited conformational change of the crown ring that results from the blocking of in-tramolecular self-assembly of the mono-calixcrown.

关 键 词：双杯冠 自组装 氢键 络合 铯离子 

分 类 号：O621.13[理学—有机化学]