Distance-Independent DNA Charge Transport across an Adenine Tract
Charging along: DNA-mediated charge transport across adenine tracts is monitored by using a probe interior to the bridge (N^6-cyclopropyladenine (^(CP)A), shown in red). This trap was incorporated serially across the bridge and could be oxidized by a distal rhodium photooxidant without significant attenuation in yield over a distance of 5 nm. These results are consistent with complete delocalization of charge across the DNA bridge.
© 2007 WILEY-VCH Verlag. Received: April 7, 2007 Revised: May 11, 2007. Article first published online: 2 Jul 2007. We are grateful to the NIH (GM49216) for their financial support. We thank M. Davis and F. Shao for expert assistance.