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Paper Abstract and Keywords
Presentation 2013-03-05 14:00
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 (Kyushu Univ.) OME2012-97
Abstract (in Japanese) (See Japanese page) 
(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) 
(in English) DNA / Conjugate / Photochemical Crosslinking / Dendrimer / Self-Assembled Monolayer / Electrochemistry / /  
Reference Info. IEICE Tech. Rep., vol. 112, no. 456, OME2012-97, pp. 29-32, March 2013.
Paper # OME2012-97 
Date of Issue 2013-02-26 (OME) 
ISSN Print edition: ISSN 0913-5685    Online edition: ISSN 2432-6380
Copyright
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reproduction		 All rights are reserved and no part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopy, recording, or any information storage and retrieval system, without permission in writing from the publisher. Notwithstanding, instructors are permitted to photocopy isolated articles for noncommercial classroom use without fee. (License No.: 10GA0019/12GB0052/13GB0056/17GB0034/18GB0034)
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Conference Information
Committee OME  
Conference Date 2013-03-05 - 2013-03-05 
Place (in Japanese) (See Japanese page) 
Place (in English) AIST Kyushu Center 
Topics (in Japanese) (See Japanese page) 
Topics (in English) biotechnology, electronics, materials, interfaces, in situ observation, etc. 
Paper Information
Registration To OME 
Conference Code 2013-03-OME 
Language Japanese 
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 
Sub Title (in English) Chemical structural characterization of the monolayer membranes and their electrochemical properties 
Keyword(1) DNA  
Keyword(2) Conjugate  
Keyword(3) Photochemical Crosslinking  
Keyword(4) Dendrimer  
Keyword(5) Self-Assembled Monolayer  
Keyword(6) Electrochemistry  
Keyword(7)  
Keyword(8)  
1st Author's Name Koji Nakano  
1st Author's Affiliation Kyushu University (Kyushu Univ.)
2nd Author's Name Takafumi Sawada  
2nd Author's Affiliation Kyushu University (Kyushu Univ.)
3rd Author's Name Yoshifumi Mori  
3rd Author's Affiliation Kyushu University (Kyushu Univ.)
4th Author's Name Ryoichi Ishimatsu  
4th Author's Affiliation Kyushu University (Kyushu Univ.)
5th Author's Name Toshihiko Imato  
5th Author's Affiliation Kyushu University (Kyushu Univ.)
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Speaker Author-1 
Date Time 2013-03-05 14:00:00 
Presentation Time 25 minutes 
Registration for OME 
Paper # OME2012-97 
Volume (vol) vol.112 
Number (no) no.456 
Page pp.29-32 
#Pages 4 
Date of Issue 2013-02-26 (OME) 

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