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Femtosecond transient absorption of DNA assemblies with 5Z/5G, 6Z/6G, and 7Z/7G after excitation at 500 nm (probed at 400 nm); short (Left) and long (Right) time scales are shown. All samples contained 10 μM duplex DNA in 5 mM phosphate/50 mM NaCl, pH 7. The sequences are displayed with closest position of E indicated.
