Benzothiazole-Based Bis-azo Cationic Fluorescent Dyes with Extended Conjugated Systems: Synthesis and Properties

F. Nourmohammadian, Mohammad Yousef Alikhani, M. Gholami, A. Abdi
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引用次数: 3

Abstract

Sixteen novel 2-aminobenzothiazole based dichromophoric cationic azo dyes were synthesized and their photophysical properties studied. The colors of the synthesized azo dyes were violet to blue with high molecular extinction coefficient ranged between 2.6 - 4.7× 10 4 (M -1 .cm -1 ). All of the dyes showed unique fluorescence emission at a broad range of 409–494 nm. The absorp­tion and emission spectral changes of selected dyes were also analyzed in solvents with different polarity. Furthermore, the antibacterial activities of the dyes were evaluated against gram positive and negative bacteria including S . aureus , S. epidermidis , E. coli , and P. aeruginosa and different concentrations of dyes showed an anti-gram positive bacterial activity.
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苯并噻唑基双偶氮阳离子荧光染料的扩展共轭体系:合成与性能
合成了16种新型2-氨基苯并噻唑基阳离子偶氮双色染料,并对其光物理性质进行了研究。合成的偶氮染料颜色为紫色至蓝色,分子消光系数在2.6 ~ 4.7× 10.4 (M -1 .cm -1)之间。所有染料在409 ~ 494 nm宽范围内显示出独特的荧光发射。分析了所选染料在不同极性溶剂中的吸收光谱和发射光谱变化。此外,还研究了染料对革兰氏阳性菌和阴性菌的抑菌活性。金黄色葡萄球菌、表皮葡萄球菌、大肠杆菌和铜绿假单胞菌以及不同浓度的染料均表现出抗革兰氏阳性细菌的活性。
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