Triazolylpyrenes: synthesis, fluorescence properties, and incorporation into DNA |
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| Authors: | Werder Sarah Malinovskii Vladimir L Häner Robert |
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| Affiliation: | Department of Chemistry and Biochemistry, University of Bern, Freiestrasse 3, CH-3012 Bern, Switzerland. |
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| Abstract: | Synthesis of 1,6- and 1,8-triazolylpyrenes and their incorporation into oligonucleotides is described. In hybrids, triazolylpyrenes adopt interstrand stacking interactions. Exciton coupling is observed for the duplex containing a pair of the 1,6-isomer indicating a well-defined helical arrangement of the triazolylpyrene building blocks. Triazole substitution results in pronounced red-shifts of monomer as well as excimer fluorescence. Furthermore, quantum yields of the formed excimers are remarkably high. |
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