Supramolecular complex formation by β-cyclodextrin and ferrocenylnaphthalene diimide-intercalated double stranded DNA and improved electrochemical gene detection

被引:36
|
作者
Sato, S [1 ]
Nojima, T [1 ]
Waki, M [1 ]
Takenaka, S [1 ]
机构
[1] Kyushu Inst Technol, Dept Mat Sci, Tobata Ku, Kitakyushu, Fukuoka 8048550, Japan
来源
MOLECULES | 2005年 / 10卷 / 06期
关键词
ferrocenylnaphthalene diimide; beta-cyclodextrin (CD); DNA; electrochemical detection; supramolecular complex;
D O I
10.3390/10060693
中图分类号
Q5 [生物化学]; Q7 [分子生物学];
学科分类号
071010 ; 081704 ;
摘要
Ferrocenylnaphthalene diimide 1 can bind to double stranded DNA (dsDNA) by the threading intercalation mode and the resulting complex was stabilized further by beta-cyclodextrin (CD) by forming a supramolecular complex. These complex formation processes were studied by spectroscopic, viscometric, and electrochemical means in the absence or presence of beta-CD. Quantitative analysis by quartz crystal microbalance (QCM) and electrochemical experiments strongly suggested a 2:1 binding stoichiometry for beta-CD to 1 threading-intercalated to the dsDNA-immobilized electrode. Owing to this supramolecular complex formation, electrochemical DNA detection based on 1 was improved considerably.
引用
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页码:693 / 707
页数:15
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