| Presentation | 2013-03-05 DNA dendrimer self-assembly built up by photocrosslinkable oligonucleotide conjugates : Chemical structural characterization of the monolayer membranes and their electrochemical properties Koji NAKANO, Takafumi SAWADA, Yoshifumi MORI, Ryoichi ISHIMATSU, Toshihiko IMATO, |
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| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | We designed three types of 26-mer oligodeoxyribonucleotides that produce the three-way junction (TWJ) structure through the selective hydrogen bonding between the complimentary base-pairs. At the 5'-end was left a self-complimentary sticky sequence, which was further modified with psoralen (7H-furo[3,2-g]chromen-7-one)to exert covalent molecular aggregation through the interstrand photochemical crosslinking. Dynamic light scattering as well as high-resolution electron microscopy revealed that the TWJ unit developed very large aggregates in solution, a new kind of dendrimer made by the TWJ-DNA duplex, which were ca. 400-nm in diameter having three-dimensional network structure. We further examined the TWJ-DNA molecular aggregation at the solid substrates. Interestingly, we found that the TWJ-DNA duplexes self-assembled to developed uniform dendrimer monolayers. Various surface analysis methods including cyclic voltammetry and electrochemical impedance spectroscopy characterized the DNA dendrimer SAMs in detail. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | DNA / Conjugate / Photochemical Crosslinking / Dendrimer / Self-Assembled Monolayer / Electrochemistry |
| Paper # | OME2012-97 |
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| Committee | OME |
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| Conference Date | 2013/2/26(1days) |
| Place (in Japanese) | (See Japanese page) |
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| Topics (in Japanese) | (See Japanese page) |
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| Registration To | Organic Material Electronics (OME) |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | DNA dendrimer self-assembly built up by photocrosslinkable oligonucleotide conjugates : Chemical structural characterization of the monolayer membranes and their electrochemical properties |
| Sub Title (in English) | |
| Keyword(1) | DNA |
| Keyword(2) | Conjugate |
| Keyword(3) | Photochemical Crosslinking |
| Keyword(4) | Dendrimer |
| Keyword(5) | Self-Assembled Monolayer |
| Keyword(6) | Electrochemistry |
| 1st Author's Name | Koji NAKANO |
| 1st Author's Affiliation | Department of Applied Chemistry, Faculty of Engineering, Kyushu University() |
| 2nd Author's Name | Takafumi SAWADA |
| 2nd Author's Affiliation | Department of Applied Chemistry, Faculty of Engineering, Kyushu University |
| 3rd Author's Name | Yoshifumi MORI |
| 3rd Author's Affiliation | Department of Applied Chemistry, Faculty of Engineering, Kyushu University |
| 4th Author's Name | Ryoichi ISHIMATSU |
| 4th Author's Affiliation | Department of Applied Chemistry, Faculty of Engineering, Kyushu University |
| 5th Author's Name | Toshihiko IMATO |
| 5th Author's Affiliation | Department of Applied Chemistry, Faculty of Engineering, Kyushu University |
| Date | 2013-03-05 |
| Paper # | OME2012-97 |
| Volume (vol) | vol.112 |
| Number (no) | 456 |
| Page | pp.pp.- |
| #Pages | 4 |
| Date of Issue | |