取代基对吡唑啉酮类酸性染料耐光性能的影响  

Effect of Substituents on Light Resistance of Pyrazolinone Acid Dyes

作　　者：凌杰 陈维国[1,2] 崔志华[1,2,3] 肖刚 张志强 LING Jie;CHEN Wei-guo;CUI Zhi-hua;XIAO Gang;ZHANG Zhi-qiang(Engineering Research Center for Eco-Dyeing and Finishing of Textiles,Ministry of Education,Zhejiang Sci-Tech University,Hangzhou 310018,Zhejiang China;Key Laboratory of Advanced Textile Materials and Manufacturing Technology,Ministry of Education of China,Hangzhou 310018,Zhejiang China;National Engineerin Research Center for Dyeing and Finishing of Textiles,Taian 271000,Shandong China;Jinhua Shuanghong Chemical Co.,Ltd.,Jinhua 321000,Zhejiang China;Zhejiang Houyuan Textile Co.,Ltd.,Tongxiang 314511,Zhejiang China)

机构地区：[1]浙江理工大学生态染整技术教育部工程研究中心,杭州310018 [2]浙江理工大学先进纺织材料与制备技术教育部重点实验室,杭州310018 [3]国家先进印染技术创新中心,泰安271000 [4]金华双宏化工有限公司,金华321000 [5]浙江厚源纺织股份有限公司,桐乡314511

出　　处：《染料与染色》2022年第4期11-16,共6页Dyestuffs and Coloration

基　　金：国家自然科学基金项目(21808210);浙江省自然科学基金项目(LY21B060010);国家先进印染技术创新中心科研基金项目(ZJ2021A03);“纺织之光科技教育基金会”应用基础研究项目(J202108)。

摘　　要：设计合成了4支含吡唑啉酮结构的酸性染料,考察了染料在水溶液中最大吸收波长及吸光度值的变化,比较了不同供/吸电子取代基对染料耐光稳定性的影响。研究表明:重氮组分上引入供电子基团使染料最大吸收波长发生红移;吡唑啉酮类酸性染料中引入供电子基团会降低染料的耐光稳定性,引入吸电子基团后染料的耐光稳定性有所改善;该类染料在水溶液中的光褪色行为主要由光氧化反应引起,属于光氧化褪色机理。可从分子设计角度改善吡唑啉酮染料的耐光稳定性。Four acid dyes containing pyrazolone structure were designed and synthesized.The changes of maximum absorption wavelength and absorbance value of the dyes in aqueous solution were investigated,and the effects of different electron-donating substituents on the light stability of the dyes were compared.The results showed that the introduction of electron-donating groups on diazo components made the maximum absorption wavelength of the dye red-shifted.The introduction of electron-donating groups in pyrazolone acid dyes will reduce the light stability of the dye,and the light stability of the dye is improved after the introduction of electron-withdrawing groups.The photofading behavior of pyrazolone acid dyes in aqueous solution is mainly caused by photooxidation,which belongs to the photooxidation fading mechanism.So the light stability of pyrazolone dyes maybe improved from the perspective of molecular design.

关 键 词：吡唑啉酮 酸性染料 耐光稳定性 供电子基团 氧化反应 

分 类 号：TQ615.1[化学工程—精细化工]