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Voltammetric Studies of Diazocalix[4]crown-6 for Metal Ion Sensing

Authors
Dong, YunyanKim, Tae HyunLee, Chang-SeukKim, Hyun JungLee, Jae HongLee, Joung HaeKim, HasuckKim, Jong Seung
Issue Date
20-12월-2010
Publisher
WILEY-V C H VERLAG GMBH
Keywords
Diazocalixarene; Calixcrown; Voltammetry; Cation recognition
Citation
BULLETIN OF THE KOREAN CHEMICAL SOCIETY, v.31, no.12, pp.3549 - 3552
Indexed
SCIE
SCOPUS
KCI
Journal Title
BULLETIN OF THE KOREAN CHEMICAL SOCIETY
Volume
31
Number
12
Start Page
3549
End Page
3552
URI
https://scholar.korea.ac.kr/handle/2021.sw.korea/115109
DOI
10.5012/bkcs.2010.31.12.3549
ISSN
0253-2964
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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