两种新型发光冠醚离子载体的金属离子识别性能

Ion Sensing Properties of Two Novel Luminescent Crown Ether Ionophores

研究了２ 种发光冠醚离子载体络合萃取不同碱金属离子后的荧光性质， 发现有效络合金属离子后荧光光谱蓝移并伴随有荧光强度增强． 求取了萃取常数和选择性常数， 探讨了２ 种离子载体识别金属离子性能差异的原因．

Two novel crown ether ionophores with dansyl chloride group as the fluorescent part and different alkyl groups as side chain were used for extractions of alkali metal ions in 1,2-dicloroethane.The metal induced hypsochromic band shift with an increase of fluorescent intensity was observed,the extraction constant K ex and selectivity constant S were evaluated.The results indicate that RDAC with propyl as the side chain showing higher extraction selectivity for Na + /K + than HDAC.