应用化学 ›› 2023, Vol. 40 ›› Issue (3): 430-435.DOI: 10.19894/j.issn.1000-0518.220248

• 研究论文 • 上一篇    下一篇

吡啶酮结构分散染料的合成及其偶氮-腙式异色机理

宋希雨1,2(), 高林波2, 侯丽2, 侯爱芹1, 钱红飞2   

  1. 1.东华大学化学与化工学院,上海 201620
    2.绍兴文理学院浙江省清洁染整技术研究重点实验室,绍兴 312000
  • 收稿日期:2022-07-20 接受日期:2022-12-11 出版日期:2023-03-01 发布日期:2023-03-27
  • 通讯作者: 宋希雨
  • 基金资助:
    年度浙江省博士后科研项目择优(ZJ2021109)

Synthesis and azo-Hydrazone Heterochromia Mechanism of Disperse Dyes Containing Pyridone Groups

Xi-Yu SONG1,2(), Lin-Bo GAO2, Li HOU2, Ai-Qin HOU1, Hong-Fei QIAN2   

  1. 1.College of Chemistry and Chemical Engineering,Donghua University,Shanghai 201620,China
    2.Key Laboratory of Clean Dyeing and Finishing Technology of Zhejiang Province,Shaoxing University,Shaoxing 312000,China
  • Received:2022-07-20 Accepted:2022-12-11 Published:2023-03-01 Online:2023-03-27
  • Contact: Xi-Yu SONG
  • About author:xiaoyugemin@163.com
  • Supported by:
    the Postdoctoral Fellowship of Zhejiang Province(ZJ2021109)

摘要:

研究了(N-乙基-3-氰基-4-甲基-5-(4-硝基偶氮苯)-6-羟基-2-吡啶酮)(D1)和(N-乙基-3-氰基-4-甲基-5-(2-氯4-硝基偶氮苯)-6-羟基-2-吡啶酮)(D2)这2种吡啶酮分散染料在溶剂(DMF 和CH2Cl2)和织物(涤纶和锦纶)上的偶氮-腙式异构行为,分析染料在极性和非极性溶剂中的吸收光谱差异,染料在涤纶和锦纶织物上的异色行为。运用高斯计算模拟染料的优化构型以及在溶剂和无溶剂状态下的染料吸收光谱,研究吡啶酮染料在不同环境下的偶氮-腙式存在形式。核磁共振氢谱(1H NMR)表明,吡啶酮结构分散染料在极性溶剂中以偶氮结构存在,在非极性溶剂中以腙式结构存在。染色结果结合量子计算表明,染料在涤纶织物以腙式结构存在,在锦纶织物以偶氮结构存在。此外,吡啶酮分散染料在涤纶织物表现出超高的耐光色牢度,而在锦纶织物上的耐光色牢度较差,染料在异种织物上耐光色牢度的巨大差异归因于染料在不同织物上呈现出不同的分子结构。

关键词: 吡啶酮, 偶氮-腙式, 异色, 高斯计算, 耐光色牢度

Abstract:

E)-1-ethyl-6-hydroxy-4-methyl-5-((4-nitrophenyl)diazenyl)-2-oxo-1,2-dihydropyridine-3-carbonitrile and (E)-5-((2,4-dinitrophenyl)diazenyl)-1-ethyl-6-hydroxy-4-methyl-2-oxo-1,2-dihydropyridine-3-carbonitrile, namely D1 and D2 were synthesized, color performance in solvents, DMF and CH2Cl2, as well as polyester and polyaimde fabrics are studied to investigate azo-hydrazone tautomerism behaviors of disperse dyes containing pyridone group. The visible absorption spectrophotometry behaviors in solvents are studied, and the heterochromic dyeing performance on polyethylene terephthalate (PET) and polyamide (PA) fabrics is also compared. To reveal azo-hydrazone tautomerism of pyridone disperse dyes induced by circumstances, Gaussian simulation is applied to give optimized geometries, as well as absorption spectrum in solvent and non-solvent environment. Nuclear magnetic resonance (1H NMR) spectrum shows that the disperse dyes with pyridinone structure exist as azo form in polar solvents and hydrazone tautomer in non-polar solvents. The dyeing performance and quantum calculation show that the dyes exist in hydrazone form on PET fabric and azo structure in PA fabric. Pyridone disperse dyes show excellent light fastness on PET fabrics, but poor light fastness on PA fabrics, which is attributed to azo-hydrazone tautomerism of the dyes.

Key words: Pyridone, Azo-hydrazone, Heterochromia, Gaussian simulation, Light fastness

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