Mayer-Enthart, Elke and Wagner, Clemens and Barbaric, Janez and Wagenknecht, Hans-Achim (2007) Helical self-assembled chromophore clusters based on DNA-like architecture. TETRAHEDRON, 63 (17). pp. 3434-3439. ISSN 0040-4020,
Full text not available from this repository. (Request a copy)Abstract
DNA duplexes were functionalized covalently by clusters of five adjacent chromophores consisting of 5-(pyren-1-yl)-2'-deoxyuridine (Py-U) and 5-(10-methyl-phenothiazin-3-yl)-2'-deoxyuridine (Pz-U). The chromophores form a regular helical pi-array along the major groove of duplex DNA when the 5-fold chromophore-modified oligonucleotides are hybridized with an unmodified counter strand. As a result, these chromophores interact significantly and their fluorescence and absorption properties can be modulated by the sequence within the pi-array. The 5-fold Py-U stack shows a strongly enhanced emission. The presence of intervening Pz-U groups quenches the fluorescence of the Py-U chromophores. Such modulation of the optical properties within a chromophore stack is potentially useful for optical nanodevices and as nucleic acid sensors for molecular diagnostics. The duplex architecture of DNA is suitable to provide the supramolecular structural scaffold for a directed arrangement of chromophores. (c) 2007 Published by Elsevier Ltd.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | PI-CONJUGATED SYSTEMS; NUCLEIC-ACID; ELECTRON-TRANSFER; CHARGE-TRANSFER; MOLECULAR ELECTRONICS; BUILDING-BLOCKS; PYRENE-ARRAY; DYES; PHENANTHRIDINIUM; OLIGONUCLEOTIDES; |
| Subjects: | 500 Science > 540 Chemistry & allied sciences |
| Divisions: | Chemistry and Pharmacy > Institut für Organische Chemie > Alumni or Retired Professors > Arbeitskreis Prof. Dr. Hans-Achim Wagenknecht |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 14 Dec 2020 11:11 |
| Last Modified: | 14 Dec 2020 11:11 |
| URI: | https://pred.uni-regensburg.de/id/eprint/32877 |
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