Cardiff University | Prifysgol Caerdydd ORCA
Online Research @ Cardiff 
WelshClear Cookie - decide language by browser settings

Excited state dependent electron transfer of a rhenium-dipyridophenazine complex intercalated between the base pairs of DNA: a time-resolved UV-visible and IR absorption investigation into the photophysics of fac-[Re(CO)(3)(F(2)dppz)(py)](+) bound to either [poly(dA-dT)](2) or [poly(dG-dC)](2)

Cao, Qian, Creely, Caitriona M., Davies, E. Stephen, Dyer, Joanne, Easun, Timothy, Grills, David C., McGovern, David A., McMaster, Jonathan, Pitchford, Jonathan, Smith, Jayden A., Sun, Xue-Zhong, Kelly, John M. and George, Michael W. 2011. Excited state dependent electron transfer of a rhenium-dipyridophenazine complex intercalated between the base pairs of DNA: a time-resolved UV-visible and IR absorption investigation into the photophysics of fac-[Re(CO)(3)(F(2)dppz)(py)](+) bound to either [poly(dA-dT)](2) or [poly(dG-dC)](2). Photochemical & Photobiological Sciences 10 (8) , pp. 1355-1364. 10.1039/C1PP05050H

Full text not available from this repository.

Abstract

The transient species formed following excitation of fac-[Re(CO)3(F2dppz)(py)]+ (F2dppz = 11,12-difluorodipyrido[3,2-a:2′,3′-c]phenazine) bound to double-stranded polynucleotides [poly(dA-dT)]2 or [poly(dG-dC)]2 have been studied by transient visible and infra-red spectroscopy in both the picosecond and nanosecond time domains. The latter technique has been used to monitor both the metal complex and the DNA by monitoring the regions 1900–2100 and 1500–1750 cm−1 respectively. These data provide direct evidence for electron transfer from guanine to the excited state of the metal complex, which proceeds both on a sub-picosecond time scale and with a lifetime of 35 ps, possibly due to the involvement of two excited states. No electron transfer is found for the [poly(dA-dT)]2 complex, although characteristic changes are seen in the DNA-region TRIR consistent with changes in the binding of the bases in the intercalation site upon excitation of the dppz-complex.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Chemistry
Subjects: Q Science > QD Chemistry
Publisher: Royal Society of Chemistry
Last Modified: 04 Jun 2017 07:58
URI: http://orca.cf.ac.uk/id/eprint/71021

Citation Data

Cited 23 times in Scopus. View in Scopus. Powered By Scopus® Data

Cited 12 times in Web of Science. View in Web of Science.

Actions (repository staff only)

Edit Item Edit Item