. Author manuscript; available in PMC: 2010 Jun 15.

Published in final edited form as: Inorg Chem. 2009 Jun 15;48(12):5392–5397. doi: 10.1021/ic900407n

Table 2.

Luminescence Decay Parameters for Δ–Ru(bpy)₂dppz²⁺ with DNA in the Presence of NaI.^a

DNA	[NaI]/[KCl] (mM/mM)	τ₁ (ns)^b	τ₂ (ns)^b	τ₁:τ₂^c
Matched	0/1000	83	305	74:26
	500/500	81	295	66:34
	1000/0	76	275	63:37
Mismatched	0/1000	111	448	80:20
	500/500	103	357	74:26
	1000/0	99	325	75:25
Abasic	0/1000	97	300	85:15
	500/500	90	200	75:25
	1000/0	85	177	73:27

Samples containing 2 μM Ru and 4 μM DNA (5 mM Tris, pH 7.5, 50 mM NaCl) were used for the excited state lifetime measurements (λ_ex = 470 nm, λ_em = 610 nm). The 27-mer oligonucleotides (matched, mismatched and abasic DNA, Figure 2) were used.

Uncertainties in excited state lifetimes are ≤ 10%.

Relative contributions of each lifetime to the overall decay.