The invention relates to a near-infrared fluorescent dye and use thereof, and particularly relates to compounds represented by following Formulae A, B and C, wherein each group in the Formulae is described in the specification. Further provided are a dye composition comprising the compound represented by Formula A or Formula B, and a preparation method of the compound represented by Formula A or Formula B. The compound has a maximum absorption wavelength of 880 nm, considerably exceeding maximum absorption wavelengths of the majority of small-molecule near-infrared fluorescent dyes in the prior art. Moreover, the structure thereof does not aggregate even if the concentration thereof is excessively high, thereby having considerably high chemical stability and light stability.
本发明涉及一种近红外荧光
染料及其用途,特别是涉及由以下式A、B和C代表的化合物,其中式中的每个基团在说明书中均有描述。该化合物的最大吸收波长为 880 nm,大大超过了现有技术中大多数小分子近红外荧光
染料的最大吸收波长。此外,即使浓度过高,其结构也不会聚集,因此具有极高的
化学稳定性和光稳定性。