Atomic Force Microscopy Study of new Sensing Platforms: Cucurbit[n]uril (n=6, 7) on Gold

被引:25
作者
Blanco, Elias [1 ]
Quintana, Carmen [1 ]
Hernandez, Lucas [1 ]
Hernandez, Pedro [1 ]
机构
[1] Univ Autonoma Madrid, Fac Ciencias, Dept Quim Analit & Anal Instrumental, E-28049 Madrid, Spain
关键词
Adsorption; Cucurbituril; Gold; Monolayers; ION COMPLEXED CUCURBITURIL; SELF-ASSEMBLED MONOLAYERS; HOST; IMMOBILIZATION; DERIVATIVES; MOLECULES; BEHAVIOR; BINDING; FAMILY; THIN;
D O I
10.1002/elan.201200379
中图分类号
O65 [分析化学];
学科分类号
070302 ; 081704 ;
摘要
This work presents the comparative study of the spontaneous adsorption of cucurbit[6]uril and cucurbit[7]uril on gold by means of atomic force microscopy. A faster cucurbit[6]uril adsorption was not achieved by the use of a cucurbit[6]uril solution with sodium salts to increment its solubility than by the treatment with a saturated one in water. However, sodium ions promoted the cucurbit[6]uril polymerization on the previously adsorbed layer. The electrode reaction of hydroquinone became irreversible when a cucurbit[6]uril modified gold electrode was used. Cucurbit[7]uril adsorption was faster than for the smaller homologue and multilayers were generated too with high adsorption times.
引用
收藏
页码:263 / 268
页数:6
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