Voltammetric studies of diazocalix[4]crown-6 for metal ion sensing

Yunyan Dong, Tae Hyun Kim, Chang Seuk Lee, Hyun Jung Kim, Jae Hong Lee, Joung Hae Lee, Hasuck Kim, Jong Seung Kim

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)

Abstract

The complex formation between diazocalix[4]dipropyl (1) and diazocalix[4]crown-6 ether (2) with alkali, alkaline earth and transition metal ions was investigated by voltammetry. Electrochemical properties of compounds 1 and 2 and their selectivity toward metal ions were evaluated in CH3CN solution by comparison of voltammetric behaviors of two phenols in each compound. Compounds 1 and 2 showed almost same voltammetric behavior which is two irreversible oxidation peaks caused by intramolecular hydrogen bonding between two phenols in 1 and 2. While, however, upon interacting with various metal ions, 1 with two propyl ether groups showed no significant changes in voltammetry, 2 with crown ether group caused significant voltammetric changes upon the addition of Ba2+ to 2. Their behavior is closely related to the complex formation by entrapment of metal ion into crown ether cavity, and ion-dipole interaction between metal ion and two phenolic groups in calix[4]crown-6.

Original languageEnglish
Pages (from-to)3549-3552
Number of pages4
JournalBulletin of the Korean Chemical Society
Volume31
Issue number12
DOIs
Publication statusPublished - 2010 Dec 20
Externally publishedYes

Keywords

  • Calixcrown
  • Cation recognition
  • Diazocalixarene
  • Voltammetry

ASJC Scopus subject areas

  • Chemistry(all)

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