Bioinorganic Chemistry and Applications

Research Article

Synthesis, Characterization, DNA Binding, and Photocleavage Activity of Oxorhenium (V) Complexes with -Diimine and Quinoxaline Ligands

Table 2

Melting temperatures of CT-DNA in 10 mM buffer (pH 7.0 and pH 5.0) in the presence of complexes 1–3, before and after irradiation (  nm).
C.T.-DNA R = 0.025R = 0.050R = 0.02 R = 0.050*
pH %hyp %hyp %hyp %hyp
[ReOC pq]7.080.1 18.081.8 13.077.9 12.079.1 12.0
(1)5.081.1 27.080.2 19.078.1 28.079.1 19.0
[ReOC bpy]7.076.9 44.076.9 39.075.4 45.075.1 36.0
(2)5.076.1 20.077.1 20.073.1 20.076.1 20.0
[ReOC phen]7.071.1 71.4 70.9 74.2
(4)5.073.1 73.3 73.1 73.1
lluminated samples. he melting point of the free CT-DNA is (pH 7.0) and (pH 5.0).