Adsorption phenomena in the systems containing macrocyclic cavitand cucurbit [7]uryl

被引：0
作者：
E. V. Stenina
L. N. Sviridova
N. Kh. Petrov
机构：
[1] Moscow State University,Chemical Faculty
[2] RAS,Center of Photochemistry
来源：
Russian Journal of Electrochemistry | 2017年 / 53卷
关键词：
cucurbit[7]uryl; adsorption; interface; differential capacitance; supramolecular compounds; complex;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
Adsorption phenomena at the mercury electrode/cucurbit[7]uryl aqueous solutions are studied by the measuring of the electrode differential capacitance C as a function of potential E. The data obtained showed that the adsorption potential region is abnormally wide (>2 V). Two segments are observed in the C,E-dependences, which relate to adsorption layers with different structure. The complicated adsorption layers forming in the studied systems can be explained by the structure of the cucurbit[7]uryl cavitand whose complexes with inorganic cations are formed by the cation binding by oxygen-containing groups of external portals, rather than their inclusion into the cavitand’s inner cavity as in the case of cryptate formation. Adsorption parameters for adsorbate layers formed in the cucurbit[7]uryl + Na2SO4 solution are calculated. The data obtained evidence a rather strong potential dependence of the properties of the adsorption layers formed at the electrode/solution interface in the studied system.
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页码：103 / 109
页数：6
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