Benzyl-containing azobenzene-based disperse dyes: Relationship between molecular packing and alkali-resistant stability
作者:Min Li、Qixin Lu、Aiping Liu、Jialing Tan、Liping Zhang、Dong Wang、Mingming Liu、Shaohai Fu
DOI:10.1016/j.molliq.2020.114270
日期:2020.11
analysis of their alkali-hydrolysis behavior and crystal structures confirmed that benzyl group can lead to diverse intermolecular interactions. The strong intermolecular interactions result in compact molecular arrangement and actually beneficial for the AR stability by preventing the nucleophilic reagent. Incorporating an understanding of these packing structures into the design of organic colorants can
尽管最近报道了具有平面结构和耐碱(AR)稳定性的偶氮苯分散染料,但尚未探索具有易水解基团和扭曲分子结构的偶氮苯分散染料及其相关的有效设计策略。在此,将空间受阻的平面苄基引入氰基的相邻位置,以深入探索染料的AR稳定性。这些设计的染料的最终固色率高于98%,常规条件与碱性条件之间的最终固色率差异小于1%,进一步应用于PET织物的一步染色,可减少60%的水消耗,40%的能源和60%的废水。对其碱水解行为和晶体结构进行仔细分析,证实苄基可导致多种分子间相互作用。强烈的分子间相互作用导致紧密的分子排列,并且通过防止亲核试剂实际上对AR的稳定性有益。将对这些堆积结构的理解纳入有机着色剂的设计中可以帮助开发高性能化学品。