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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Ashida, Akane Fujitsuka, Mamoru Takada, Tadao Nakamura, Mitsunobu Kawai, Kiyohiko Majima, Tetsuro Ido, Misa Yamana, Kazushige |
| Description | Author Affiliation: Takada T ( Department of Materials Science and Chemistry, Graduate School of Engineering, University of Hyogo, 2167â Shosha, Himeji, Hyogo 671-2280 (Japan). takada@eng.u-hyogo.ac.jp.) |
| Abstract | The charge-transfer process in noncovalent perylenediimide (PDI)/DNA complexes has been investigated by using nanosecond laser flash photolysis (LFP) and photocurrent measurements. The PDI/DNA complexes were prepared by inclusion of cationic PDI molecules into the artificial cavities created inside DNA. The LFP experiments showed that placement of the PDI chromophore at a specific site and included within the base stack of DNA led to the efficient generation of a charge-separated state with a long lifetime by photoexcitation. When two PDI chromophores were separately placed at different positions in DNA, the yield of the charge-separated state with a long lifetime was dependent upon the number of A–T base pairs between the PDIs, which was explained by electron hopping from one PDI to another. Photocurrent generation of the DNA-modified electrodes with the complex was also dependent upon the arrangement of the PDI chromophores. A good correlation was obtained between observed charge separation and photocurrent generation on the PDI/DNA-modified electrodes, which demonstrated the importance of the defined arrangement and assembly of organic chromophores in DNA for efficient charge separation and transfer in multichromophore arrays. |
| ISSN | 09476539 |
| e-ISSN | 15213765 |
| Journal | Chemistry - A European Journal |
| Issue Number | 18 |
| Volume Number | 21 |
| Language | English |
| Publisher | Wiley-VCH;ChemPubSoc Europe |
| Publisher Date | 2015-04-27 |
| Publisher Place | Germany |
| Access Restriction | Open |
| Subject Keyword | Coloring Agents Chemistry DNA Imides Perylene Analogs & Derivatives Base Pairing Binding Sites Electrochemical Techniques Electrodes Electron Transport Molecular Sequence Data Photochemical Processes Research Support, Non-U.S. Gov't |
| Content Type | Text |
| Resource Type | Article |
| Subject | Organic Chemistry Catalysis |
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