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Synthesis and properties of YOYO-1-type homodimeric monomethine cyanine dyes as noncovalent nucleic acid labels

Synthesis and properties of YOYO-1-type homodimeric monomethine cyanine dyes as noncovalent nucleic acid labels,10.1016/S0143-7208(02)00126-2,Dyes and

Synthesis and properties of YOYO-1-type homodimeric monomethine cyanine dyes as noncovalent nucleic acid labels   (Citations: 3)
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Several novel homodimeric asymmetric monomethine cyanine dyes based on the oxazole yellow (YO) chromophore were synthesized. The two YO chromophores [1-(ω-bromoalkyl)-4-[(3-methyl-2-(3H)-benzaxozolilydene)methyl]quinolinium perchlorate with different chain lengths of the ω-bromoalkyl substituent were bisquaternized with N,N,N′,N′-tetramethyl-1,3-propanediamine, N,N,N′,N′-tetramethyl-1,6-hexanediamine, 1,4-diazabi-cyclo[2,2,2]octan and bipyridine.The homodimeric dyes have molar absorptivity 140,000–180,0000 l.mol−1cm−1 at 479 nm upon binding to ds DNA. The fluorescence maxima of the complexes are around 505 nm and the fluorescence quantum yields (QF) are between 0.2 and 0.7
Journal: Dyes and Pigments - DYE PIGMENT , vol. 57, no. 2, pp. 161-164, 2003
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