Menacher, Florian and Stepanenko, Vladimir and Wuerthner, Frank and Wagenknecht, Hans-Achim (2011) Assembly of DNA Triangles Mediated by Perylene Bisimide Caps. CHEMISTRY-A EUROPEAN JOURNAL, 17 (24). pp. 6683-6688. ISSN 0947-6539,
Full text not available from this repository. (Request a copy)Abstract
Perylene bisimides (PBI) have been synthetically incorporated as caps onto a Y-shaped DNA triple strand. These PBI caps serve as "sticky" ends in the spontaneous assembly of larger DNA ensembles, linking the triangular DNA through stacking interactions. This, in turn, yields a hypsochromic shift in the absorption and a red shift in the fluorescence as characteristic optical readouts. This assembly occurs spontaneously without any enzymatic ligation process and without the use of overhanging DNA as sticky ends. Instead, dimerizations of the PBI chromophores in the assembly are controlled by the DNA as a structural scaffold. Thereby, the PBI-driven assembly is fully reversible. Due to the fact that PBI dimerization does not occur in the single strand, the aggregates can be destroyed by thermal dehybridization of the DNA scaffold and reassembled by reannealing of the DNA construct. In view of the fact that PBI forms stable radical anions, the presented DNA architectures are not only interesting optical biomaterials, but are also promising materials for molecular electronics with DNA.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | PI-CONJUGATED SYSTEMS; BASE-PAIRS; DYES; NANOSTRUCTURES; CHEMISTRY; NANOTECHNOLOGY; ARCHITECTURES; TRIPLEXES; SURROGATE; POLYMERS; biomaterials; chromophores; excimers; fluorescence; oligonucleotides |
| Subjects: | 500 Science > 540 Chemistry & allied sciences |
| Divisions: | Chemistry and Pharmacy > Institut für Organische Chemie |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 15 Jun 2020 10:25 |
| Last Modified: | 15 Jun 2020 10:25 |
| URI: | https://pred.uni-regensburg.de/id/eprint/20760 |
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