New indodicarbocyanine dyes with the carboxybutyl group in position-3 of the indolenine fragment bearing methyl and sulfonic groups in positions 5 and 7 of the cycle were synthesized in order to find the most effective fluorescent labels for the biological microchip technology. The position of absorption and fluorescence maxima, the total charge of the dye molecule, and water solubility depend on the location and the total amount of methyl and sulfonic groups. The spectral characteristics of the dyes synthesized were determined. The relative fluorescence efficiencies of the dyes at equal concentrations were measured at excitation wavelengths of 635 and 655 nm and emission wavelengths of 670 and 690 nm, respectively.
为寻找
生物微芯片技术中最有效的荧光标记物,合成了
吲哚碳菁
染料,其
吲哚啉部分的3位带有羧丁基,环的5位和7位分别带有甲基和
磺酸基。
染料的吸收和荧光最大值位置、分子总电荷以及
水溶性取决于甲基和
磺酸基的位置和总量。测定了所合成
染料的光谱特性,并在激发波长为635nm和655nm,发射波长为670nm和690nm时,分别测量了等浓度
染料的相对荧光效率。