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A) Spectrophotometric titration of ct DNA to dimer 4b in BPE buffer (cL = 20 µM, cct DNA = 1.45 mM, cct DNA in base pairs). The arrow indicates the changes of absorption upon the addition of ct DNA. B) CD spectra of the dimer 4b with ct DNA (50 µM) in BPE buffer with LDR = 0 (black), 0.5 (red), 1.0 (blue), and 2.0 (green). C) LD spectra of dimer 4b with ct DNA (c = 500 µM) in BPE buffer with LDR = 0 (black), 0.04 (red), 0.08 (blue), and 2.0 (green).
