Direct observation by time-resolved infrared spectroscopy of the bright and the dark excited states of the [Ru(phen)2(dppz)]2 light-switch compound in solution and when bound to DNA
نویسندگان
چکیده
School of Chemistry, Trinity College Dub Ireland. E-mail: [email protected] Trinity Biomedical Sciences Institute (TBSI) Dublin, Dublin 2, Ireland Department of Chemistry, University of Rea Diamond Light Source, Harwell Science and OX11 0QX, UK Central Laser Facility, Research Complex Laboratory, Oxfordshire, OX11 0QX, UK School of Chemistry, University College Dub The School of Chemical Sciences, Dublin C [email protected] † Electronic supplementary information XRD spectra, spectra (UV-Vis, emission animations of vibrational modes of the CCDC 1038710. For ESI and crystallogr format see DOI: 10.1039/c5sc04514b Cite this: Chem. Sci., 2016, 7, 3075
منابع مشابه
Femtosecond linear dichroism of DNA-intercalating chromophores: solvation and charge separation dynamics of [Ru(phen)2dppz]2+ systems.
The DNA-intercalating chromophore [Ru(phen)(2)dppz](2+) has unique photophysical properties, the most striking of which is the "light-switch" characteristic when binding to DNA. As a dimer, it acts as a molecular staple for DNA, exhibiting a remarkable double-intercalating topology. Herein, we report femtosecond dynamics of the monomeric and the covalently linked dimeric chromophores, both free...
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The bimolecular quenching of the metal-to-ligand charge transfer (MLCT) excited state of Ru(phen)z(dppz)2+ (phen = 1,lO-phenanthroline, dppz = dipyrido[3,2-a:2’,3’-clphenazine) by proton transfer has been investigated in homogeneous acetonitrile solutions and in the presence of calf thymus DNA. In acetonitrile the monoexponential decay of the MLCT excited state emission of R~(phen)2(dppz)~+ is ...
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