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冠醚作为一类络合剂的使用国外已进行了广泛的研究。这类络合剂不仅在络合物化学研究方面,而且在生物膜中离子载体的模似方面以及有机合成的相转移催化剂的应用、主客体化学的发展和它们在分离分析方面的应用都显示出了极大的重要性。是近十余年来化学学科中获得显著发展的领域之一。冠醚与金属离子的络合作用是金属离子与多醚环中的氧原子(或疏、氨原子)之间靠离子——偶极静电作用相互结合。随着冠醚孔腔的大小不同要求金属离子有合适的离
The use of crown ethers as a complexing agent has been extensively studied abroad. The use of such complexing agents not only in complex chemistry research but also in ionomeric analogs in biofilms and the use of organic synthesis phase transfer catalysts, the development of host-guest chemistry and their use in separation and analysis Out of great importance. It is one of the areas that have gained significant development in chemistry in the past ten years. Crown ether and metal ions in the complex role is the metal ions and polyether ring oxygen atoms (or sparse, ammonia atoms) by ion-dipole electrostatic interaction with each other. With the size of the crown ether cavity requires a different metal ions from the appropriate