Supramolecular complex formation by β-cyclodextrin and ferrocenylnaphthalene diimide-intercalated double stranded DNA and improved electrochemical gene detection
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作者:
Sato, S
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Kyushu Inst Technol, Dept Mat Sci, Tobata Ku, Kitakyushu, Fukuoka 8048550, JapanKyushu Inst Technol, Dept Mat Sci, Tobata Ku, Kitakyushu, Fukuoka 8048550, Japan
Sato, S
[1
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Nojima, T
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Kyushu Inst Technol, Dept Mat Sci, Tobata Ku, Kitakyushu, Fukuoka 8048550, JapanKyushu Inst Technol, Dept Mat Sci, Tobata Ku, Kitakyushu, Fukuoka 8048550, Japan
Nojima, T
[1
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Waki, M
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Kyushu Inst Technol, Dept Mat Sci, Tobata Ku, Kitakyushu, Fukuoka 8048550, JapanKyushu Inst Technol, Dept Mat Sci, Tobata Ku, Kitakyushu, Fukuoka 8048550, Japan
Waki, M
[1
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Takenaka, S
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Kyushu Inst Technol, Dept Mat Sci, Tobata Ku, Kitakyushu, Fukuoka 8048550, JapanKyushu Inst Technol, Dept Mat Sci, Tobata Ku, Kitakyushu, Fukuoka 8048550, Japan
Takenaka, S
[1
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[1] Kyushu Inst Technol, Dept Mat Sci, Tobata Ku, Kitakyushu, Fukuoka 8048550, Japan
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.