Voltammetric Studies of Diazocalix[4]crown-6 for Metal Ion Sensing
- Authors
- Dong, Yunyan; Kim, Tae Hyun; Lee, Chang-Seuk; Kim, Hyun Jung; Lee, Jae Hong; Lee, Joung Hae; Kim, Hasuck; Kim, Jong Seung
- Issue Date
- 20-Dec-2010
- Publisher
- 대한화학회
- Keywords
- Diazocalixarene; Calixcrown; Voltammetry; Cation recognition
- Citation
- Bulletin of the Korean Chemical Society, v.31, no.12, pp 3549 - 3552
- Pages
- 4
- Journal Title
- Bulletin of the Korean Chemical Society
- Volume
- 31
- Number
- 12
- Start Page
- 3549
- End Page
- 3552
- URI
- https://scholarworks.bwise.kr/sch/handle/2021.sw.sch/17388
- DOI
- 10.5012/bkcs.2010.31.12.3549
- ISSN
- 0253-2964
1229-5949
- 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.
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