US-Turkey Cooperative Research: Calixarene Based Receptors for Site Reclamation by the Removal of Toxic Heavy Metals

项目描述：该项目支持德克萨斯州拉伯克市德克萨斯理工大学化学系D.M. Roundhill博士和土耳其科尼亚市塞尔丘克大学化学系Mustafa Yilmaz博士的合作项目。合作的重点是合成新的化学改性杯芳烃，并将其用作重金属离子的液-液相萃取剂。特别是目前引起环境问题的金属离子。研究人员计划研究为重金属清理应用而设计的杯芳烃受体。这项工作包括产生新的离子载体聚合物系统，具有特定的Cs+结合策略和选定的阳离子和阴离子。具体来说，杯芳烃称为杯冠-6聚合物将被合成并纳入共聚物树脂。由此衍生的材料将被表征，并将用于液-液萃取，用等体积的金属和萃取剂混合物分析水相金属。固液萃取将采用间歇柱法测定。工作计划包括三个连续的组成部分：离子载体的合成、离子载体的表征和提取研究，这些研究将评估离子载体提取金属离子的能力。项目范围：该项目支持两位具有互补专业知识和资源的知名科学家合作，研究一个重要的材料和环境问题。这项研究对环境有重大影响，因为它可能导致新的和改进的重金属污染场地的净化方法。两个小组都独立研究了杯芳烃与金属离子的络合作用，并且都将研究使用杯芳烃改性聚合物的重金属液相萃取剂。Yilmaz博士是一名合成有机化学家，在杯芳烃化学方面拥有丰富的经验；Roundhill博士是一名无机化学家，在重金属离子的络合化学方面拥有丰富的知识。拟议的合作努力将建立更强的国际联系，并提供科学效益。该项目符合INT在共同感兴趣的领域支持合作研究的目标。

0111170RoundhillDescription: This project supports a collaborative project between Dr. D.M. Roundhill, Department of Chemistry, Texas Tech University, Lubbock, Texas and Dr. Mustafa Yilmaz, Department of Chemistry, Selcuk University, Konya, Turkey. The focus of the collaboration is the synthesis of new chemically modified calixarenes, and their use as liquid-liquid phase extractants for heavy metal ions. In particular, metal ions will be targeted that are presently causing environmental problems. The researchers plan to study calixarene-based receptors designed for heavy metal clean up applications. The work includes the generation of new ionophore polymer systems with specific binding strategies for Cs+ and selected cations and anions. Specifically the calixarene known as calixcrown-6 polymer will be synthesized and incorporated into copolymer resins. The material thus derived will be characterized, and will be used in liquid-liquid extractions with equal volume mixtures of metal and extractant analyzed for aqueous phase metals. The solid-liquid extraction will be determined by batchwise column methods. The plan of work involves three sequential components: synthesis of ionophores, characterization of ionophores and extraction studies that will assess the ability of the ionophores to extract metal ions. Scope: The project supports collaboration between two well-known scientists who have complementary expertise and resources to investigate an important material and environmental problem. There are substantial environmental implications of the research, as it may lead to new and improved means for decontamination of heavy metal polluted sites. Both groups have independently studied the complexation of metal ions by calixarenes and both will conduct research on liquid phase extractants of heavy metals with the use of calixarene modified polymers. Dr. Yilmaz is a synthetic organic chemist with extensive experience in calixarene chemistry, and Dr. Roundhill is an inorganic chemist who has considerable knowledge of the complexation chemistry of heavy metal ions. The proposed collaborative effort will establish stronger international ties and provide scientific benefits. This project meets the INT objective of supporting collaborative research in areas of mutual interest.