Azobenzene-appended oligonucleotides form unexpectedly stable triple-helixes

Chemistry Letters

Volumn , Issue 2, 2000, Pages 108-109

  Asanuma, Hiroyuki ^a   Yoshida, Takayuki ^a   Liang, Xingguo ^a   Komiyama, Makoto ^a  

^a UNIVERSITY OF TOKYO   (Japan)

Author keywords

[No Author keywords available]

Indexed keywords

EID: 0034335958     PISSN: 03667022     EISSN: None     Source Type: Journal    
DOI: 10.1246/cl.2000.108     Document Type: Article

References (21)

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17. 1H-NMR. The synthesis of the phosphoramidite monomer for the Y residue was described in Ref. 3a.
18. 2O) to 50/50 at 25 min).
19. J. M. Robertson, J. Chem. Soc., 1939, 232.
20. This CD corresponds to the π-π* transition of the azobenzene. According to the literature (R. Lyng, A. Rodger, and B. Nordén, Biopolymers, 32, 1201 (1992)), negative CD is induced only in this conformation.
21. The photo-isomerization of the azobenzene in the modified oligonucleotides was accomplished by irradiating the light from a 150 W Xenon lamp for 15 min through an appropriate filter. Infrared light was cut off by water-filter. By this treatment, the fraction of the cis-isomer was kept almost constant at 70 % throughout the measurement.