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论文类型：期刊论文

发表时间：2015-12-01

发表刊物：DYES AND PIGMENTS

收录刊物：SCIE、EI、Scopus

卷号：123

页面范围：44-54

ISSN号：0143-7208

关键字：Monoazo-anthraquinone structure; Reactive dye; Blue colour; Tautomerism; DFT calculation; Dyeing properties

摘要：A new kind of reactive dyes containing both monoazo and anthraquinone chromophores was obtained by using 1,4-bis((4-aminophenyl)amino)anthrance ne-9,10-dione as diazo component and 1-amino-8-naphthol-3,6-disulfonicacid (H-add) derivatives as coupling components. The dyes were characterized by UV-Vis, IR, MS, H-1 NMR and C-13 NMR. The results showed that the maximum absorption wavelengths of the dyes were all about 590 nm, which indicated that they were a kind of blue dyes. H-1 NMR and C-13 NMR results revealed that there were two kinds of tautomerisms in dye structure and a new conjugated system formed between the anthraquinone ring and the phenyl azo linkage. Density functional theory (DFT) calculations also proved the formation of the new larger conjugated system from which the blue colour was generated. The fixations of the dyes on cotton were over 88% and the light fastness reached 5 grade. (C) 2015 Elsevier Ltd. All rights reserved.