Drastic enhancement of excess electron-transfer efficiency through DNA by inserting consecutive 5-phenylethynyl-2′-deoxyuridines as a modulator

Makiko Tanaka; Kazuhiro Oguma; Yoshio Saito; Isao Saito

doi:10.1039/C2CC34661C

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Chemical Communications

Issue 75, 2012

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Drastic enhancement of excess electron-transfer efficiency through DNA by inserting consecutive 5-phenylethynyl-2′-deoxyuridines as a modulator

Makiko Tanaka,*^a Kazuhiro Oguma,^a^b Yoshio Saito^b and Isao Saito*^a

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NEWCAT Institute, School of Engineering, Nihon University, Koriyama, Fukushima 963-8642, Japan
E-mail: makikot@ao.ce.nihon-u.ac.jp ;
Fax: +81-24-956-8924 ;
Tel: +81-24-956-8911

Department of Chemical Biology and Applied Chemistry, School of Engineering, Nihon University, Koriyama, Fukushima 963-8642, Japan

Chem. Commun., 2012,48, 9394-9396

DOI: 10.1039/C2CC34661C
Received 29 Jun 2012, Accepted 31 Jul 2012
First published online 02 Aug 2012

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5-(Phenylethynyl)-2′-deoxyuridine (^PhU) was consecutively incorporated into oligodeoxynucleotides as an electron transport modulator for regulating DNA-mediated excess electron transfer (EET). Upon photoexcitation of the ethynylpyrene chromophore, extremely high EET efficiencies through DNA containing consecutive ^PhUs were observed using 5-bromouracil as a distal electron trap.

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