亚巴比酸和硫巴比酸分散染料的合成,表征和聚染色性能
Mohamed A El-Rahman1, Alaa Z Omar2, Alshimaa R Kandeel3
1Chemistry Department, Faculty of Science, Alexandria University, P.O. 426, Ibrahemia, Alexandria, 21321, Egypt.
Scientific reports
|April 18, 2025
概括
研究人员从巴比图里酸衍生物中合成了23种氧分散染料,用于聚染料. 染料17显示出优越的颜色强度,表明强大的结构-属性关系,以提高染料性能.
科学领域:
- 有机化学 有机化学
- 材料科学 材料科学 材料科学
- 染料化学 染料化学
背景情况:
- 亚分散染料对于着色聚等合成纤维至关重要.
- 开发具有改进性质的新型染料和了解它们的结构-性质关系是一个正在进行的研究领域.
研究的目的:
- 为了合成和表征基于巴比图里酸和硫巴比图里酸衍生物的新型氧分散染料.
- 为了评估它们在聚染料中的应用性能.
- 用计算方法研究结构-属性关系.
主要方法:
- 通过二化和合反应合成23种散染料.
- 使用FT-IR,1H NMR和UV-Vis光谱进行了表征.
- 在聚布上进行应用测试,以测试性和颜色强度 (K/S).
- 使用密度函数理论 (DFT) 和时间依赖 DFT (TD-DFT) 的理论计算.
主要成果:
- 合成的染料在360-440nm之间表现出最大的吸收,实验和理论UV-Vis光谱之间有很好的一致性.
- 所有的染料在聚上都表现出极好的洗耐用性 (评分为5).
- 染料耗尽率在43.6%至92.5%之间,K/S值高达22.00.
- 染料17 (4-OCH3) 显示了最高的K/S和K/Ssum,与其最小的HOMO-LUMO能量差距 (0.1177 eV) 有关.
- 观察到显著的pH值依赖的光谱变化,这表明它们有可能作为pH值指标.
结论:
- 合成的阿佐分散染料对聚染色有效.
- 替代效应显著影响着染料的特性和性能.
- 计算洞察力有助于理解和预测染料设计的结构属性关系.
- 这些发现推动了用于织应用的高性能染料的开发.
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