Chromogenic azo-coupled calix[4]arenes

被引：60

作者：

Kim, JS ^{[1
]}

Shon, OJ

Lee, JK

Lee, SH

Kim, JY

Park, KM

Lee, SS

机构：

[1] Konyang Univ, Dept Chem, Nonsan 320711, South Korea

[2] Korea Ginseng & Tobacco Res Inst, Taejon, South Korea

[3] Gyeongsang Natl Univ, Dept Chem, Chinju, South Korea

[4] Gyeongsang Natl Univ, Inst Nat Sci, Chinju, South Korea

来源：

JOURNAL OF ORGANIC CHEMISTRY | 2002年 / 67卷 / 04期

关键词：

D O I：

10.1021/jo0108921

中图分类号：

O62 [有机化学];

学科分类号：

070303 ; 081704 ;

摘要：

Novel 1,3-alternate calix[4]azacrowns having an azo chromophoric pendent group were synthesized, and their 1,3-alternate conformations were confirmed by X-ray crystal structure. In view of the hypsochromical UV band shifting upon cation complexation, azo-coupled calix[4]azacrown-5 (3) showed the most selective shifting with alkali and alkaline metal ions. In addition, 3 revealed K+ ion selectivity not only due to the size comparability between the K+ ion and the azacrown-5 loop but also due to a significant K+-pi interaction between the two aromatic rings and the K+ ion. The UV band shifting is also dependent on the lipophilicity of the species of counteranion used.

引用

页码：1372 / 1375

页数：4

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