SYNTHESIS AND CHARACTERIZATION OF HEPTAMETHINE NIR ABSORBING CYANINE DYE COMPOUNDS

摘要

In this work, new heptamethine near infrared (NIR) absorbing cyanine dye compounds were designed and synthesized by the reaction of bis-aldehyde, (l-formyl-3-hydroxymethylene)cyclohexene with benzindole derivatives. These dyes contained different N-alkyl chain substituents and the resulting characteristics of dye compounds were studied. With considering the useful NIR absorbing properties, these dye compounds are greatly enjoyed the uses in optical recordings, optical storages, biological fluorescent stains and probe sensors. The prepared six types of new heptamethine NIR absorbing cyanine dye compounds were analyzed and the corresponding spectroscopic properties were determined.