Arun K Thazhathveetil, Josh Vura-Weis, Anton Trifonov, Michael R Wasielewski, Frederick D Lewis
Department of Chemistry and Argonne-Northwestern Solar Energy Research Center, Northwestern University, Evanston, Illinois 60208, USA.
Journal of the American Chemical Society 2012 Oct 3We report here the effect of replacing one or both of the purine or pyrimidine blocks of a diblock stilbene donor-acceptor capped hairpin with locked nucleic acid (LNA) bases on the dynamics and efficiency of hole transport. The structures of the DNA and LNA:DNA hybrids are tentatively assigned to B- or A-type structures on the basis of their circular dichroism spectra. Replacing the bases in either the A-block or the G-block of the diblock DNA hairpin with LNA bases results in a modest decrease in the base-to-base hopping rate constant and quantum yield for charge separation. Somewhat larger decreases are observed when all of the purine or pyrimidine bases are replaced by LNA bases.
Arun K Thazhathveetil, Josh Vura-Weis, Anton Trifonov, Michael R Wasielewski, Frederick D Lewis. Dynamics and efficiency of hole transport in LNA:DNA hybrid diblock oligomers. Journal of the American Chemical Society. 2012 Oct 3;134(39):16434-40
PMID: 22958189
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