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We have designed, synthesized, and characterized fluorescent cyanine heterodimers that exploit resonance energy transfer to achieve strong emission above 650 nm with 488-nm excitation. Thiazole orange serves as the common fluorescence donor in these dyes and thiazole-indolenine, thiazole blue, or symmetric thiazole blue as acceptors. The donor and acceptor(More)
Energy-transfer cyanine dyes, a thiazsole orange-thiazole-indolenine (butylTOTIN) and a thiazole orange-thiazole blue heterodimer (pentylTOTAB), form high-affinity complexes with double-stranded (ds)DNA with donor fluorescence (lambdaF(max)527 nm) quenched >90% and with acceptor fluorescence emission above 650 nm (S. C. Benson, Z. Zeng, and A. N. Glaser(More)
High-resolution capillary electrophoresis sizing of preformed complexes of bis-intercalating fluorescent dyes with double-stranded DNA has been demonstrated using hydroxyethylcellulose and 3-[tris-(hydroxymethyl) methylamino]-1-propanesulfonic acid-tetrapentylammonium (Taps-NPe+4) buffers (S. M. Clark and R. A. Mathies, Anal. Chem. 69, 1355-1363, 1997).(More)
Spherical lignin cation adsorption resin was obtained by two-step method with black liquor of paper mill and characterized by the Scanning electron microscopy (SEM) and Fourier transform infrared spectrometry (FTIR). Firstly, the spherical lignin beads were prepared with black liquor of paper mill by applying reverse-phase suspension polymerization(More)
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