While many disperse dyes have been studied in a variety of scientific fields, from textiles to biochemistry, most studies have been conducted on individual dyes having specific chromogens. However, bearing in mind that dyes are often used in combinations, in order to produce target colors for outdoor environments, an understanding of the photophysics of mixed system of dyes is important. As an extension of our previous work pertaining to scarlet and blue disperse dyes developed for use in outdoor applications, we investigated the photophysics of two commercial colorants and their various components (azo and anthraquinone red disperse dyes) to help account for their photostability when used in combinations. In this regard, experimental and modeling studies were performed to get insight into excited-state properties following light absorption. Transient absorption spectroscopy (TAS) showed that the dye mixtures dissipated excited-state energy much faster than the main component (an anthraquinone disperse red dye), which emphasized the benefit of multiple components in a commercial dye. The reduced excited-state lifetime clearly showed that the presence of additional dyes can play an important role in the photophysics and improving photostability.

尽管已经在从纺织品到生物化学的各种科学领域中研究了许多分散染料，但是大多数研究是针对具有特定色原的各种染料进行的。但是，请记住，通常将染料组合使用，以便为室外环境提供目标颜色，因此了解染料混合体系的光物理特性非常重要。作为我们以前开发的用于户外应用的猩红色和蓝色分散染料的工作的扩展，我们研究了两种商业着色剂及其各种组分（偶氮和蒽醌红色分散染料）的光物理特性，以帮助说明它们在用于工业用途时的光稳定性。组合。在这方面，进行了实验和建模研究，以了解光吸收后的激发态性质。瞬态吸收光谱法（TAS）表明，染料混合物耗散的激发态能量比主要组分（蒽醌分散的红色染料）快得多，这强调了市售染料中多种组分的优势。降低的激发态寿命清楚地表明，其他染料的存在可以在光物理和提高光稳定性方面起重要作用。