Synthesis of novel calixcrown derivatives with selective complexation towards cesium ions  

作　　者：Lu Zbang Juan Du Li Hua Yuan Dong Zhang Gui Ping Dan Yuan You Yang Wen Feng 

机构地区：[1]Key Laboratory for Radiation Physics and Technology of Ministry of Education, College of Chemisry Institute of Nuclear Science and Technology, Sichuan University Chengdu 610064, China [2]Institute of Nuclear Physics and Chemistry, CAEP, Mianyang 621900, China

出　　处：《Chinese Chemical Letters》2011年第3期284-287,共4页中国化学快报（英文版）

基　　金：financially supported by Institute of Nuclear Physics and Chemistry of CAEP(NoHG2008061)

摘　　要：A series of novel calix[4]arenecrown-6 derivatives with an alkenyl loop of various sizes 5-8 were synthesized via intramolecular ring closing olefin metathesis and characterized by ~1H NMR,^（13）C NMR and ESI-HRMS.Their complexation property towards cesium ion was studied by ^1H NMR technique.Two-phase extraction of alkali metal ions using UV-vis spectroscopy revealed remarkably different extractabilities.These results indicate that the complexation capacities towards cesium ions can be tuned and controlled through cooperative regulation of the strain of the loop and conformational change of calixcrown skelton.A series of novel calix[4]arenecrown-6 derivatives with an alkenyl loop of various sizes 5-8 were synthesized via intramolecular ring closing olefin metathesis and characterized by ~1H NMR,^（13）C NMR and ESI-HRMS.Their complexation property towards cesium ion was studied by ^1H NMR technique.Two-phase extraction of alkali metal ions using UV-vis spectroscopy revealed remarkably different extractabilities.These results indicate that the complexation capacities towards cesium ions can be tuned and controlled through cooperative regulation of the strain of the loop and conformational change of calixcrown skelton.

关 键 词：CALIXCROWNS Olefin metathesis Cesium ions EXTRACTION 

分 类 号：O636.1[理学—高分子化学] TS529.2[理学—化学]