A series of novel pyrrolo[2,1-a]isoquinoline dyes has been prepared using readily available starting materials via a simple synthetic pathway. These dyes have narrow absorption bands in the range of 500-900 nm. Those that absorb in the near-infrared region (700-1400 nm) lack significant absorption in the 300-400 nm ultraviolet region of the spectrum; this is an advantage for use in an applications such as imaging setting film. In addition, the greater thermal and chemical stability of these dyes in comparison to their indolizine analogues should be valuable in many applications.
通过简单的合成途径,利用现成的起始材料制备了一系列新型
吡咯并[2,1-a]
异喹啉染料。这些
染料在 500-900 纳米范围内具有较窄的吸收带。在近红外区域(700-1400 纳米)吸收的
染料在光谱的 300-400 纳米紫外线区域没有明显的吸收;这是用于成像胶片等应用的优势。此外,与
吲哚利嗪类似物相比,这些
染料具有更高的热稳定性和
化学稳定性,在许多应用中都很有价值。