Imaged ethidium bromide stained agarose gel of 50 μM linearized pUC18 plasmid (10 mM phophate buffer, pH = 8.3) in the presence of various concentrations of 1. Lanes 1 and 8, 1kb DNA molecular weight standard; lanes 2 and 7, linearized plasmid alone; lanes 3 – 6, 25 μM, 75 μM, 150 μM, and 250 μM complex (a) irradiated with λirr > 395 nm (tirr = 15 min) and (b) incubated in dark for 15 min at 298 K.