SODIUM-ION SELECTIVE ELECTRODES BASED ON LIPOPHILIC 16-CROWN-5 DERIVATIVES

被引：17
|
作者：
SUZUKI, K
HAYASHI, K
TOHDA, K
WATANABE, K
OUCHI, M
HAKUSHI, T
INOUE, Y
机构：
[1] HIMEJI INST TECHNOL,DEPT APPL CHEM,HIMEJI,HYOGO 67122,JAPAN
[2] HIMEJI INST TECHNOL,DEPT MAT SCI,HIMEJI,HYOGO 67122,JAPAN
来源：
ANALYTICAL LETTERS | 1991年 / 24卷 / 07期
关键词：
CROWN ETHER; ION SELECTIVITY; SODIUM ION SELECTIVE ELECTRODE; 16-CROWN-5; DERIVATIVES;
D O I：
10.1080/00032719108052955
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
Six kinds of lipopholic 16-crown-5 derivatives possessing double side-chains were synthesized. The Na+-selectivities were examined with poly(vinyl chloride) (PVC) matrix-membrane electrodes using these crown compounds. It is an effective way for obtaining high Na-selectivity by introducing a bulky side-chain such as a benzyloxymethyl group into the 16-crown-5. The electrodes based on 16-crown-5 derivatives having both a methyl or ethyl group and a benzyloxymethyl group at the pivot carbon (C-15) (3 or 4, see Figure 1) exhibited excellent Na+-selectivity over K+ (log k(Na,K) = -2.65 and -2.75 for 3 and 4, respectively).
引用
收藏
页码：1085 / 1091
页数：7
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