Stimuli-responsive luminescent coumarin thiazole hybrid dye: Synthesis, aggregation induced emission, thermochromism and DFT study

被引：24

作者：

Shreykar, Milind R. ^{[1
]}

Sekar, Nagaiyan ^{[1
]}

机构：

[1] Inst Chem Technol, Dyestuff Technol Dept, Bombay 400019, Maharashtra, India

来源：

DYES AND PIGMENTS | 2017年 / 142卷

关键词：

Coumarin thiazole; RI-ESIPT; Azomethine; AIE; Thermochromism; DFT; NLO; INTRAMOLECULAR PROTON-TRANSFER; SOLID-STATE FLUORESCENCE; PIEZOCHROMIC LUMINESCENCE; MOLECULAR ASSEMBLIES; PHOTOPHYSICAL PROPERTIES; DERIVATIVES; PIGMENT-YELLOW-101; MECHANOCHROMISM; LIQUID; TETRAPHENYLETHYLENE;

D O I：

10.1016/j.dyepig.2017.03.028

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

Novel coumarin thiazole hybrid dye with azomethine linkage was synthesized. The dye is very sparingly soluble in DMF and insoluble in other solvents. The dye shows 2 fold increase in emission enhancement on aggregation caused at 60% DMF-H2O mixture. Differential thermal analysis revealed a change from one polymorph to the other polymorph at 285 degrees C leading to emission in the red region. Excited State Intramolecular Proton Transfer takes place with thiazole nitrogen atom and not with -N atom of azomethine linkage contrary to Pigment Yellow 101. High color value (K/S = 10.42) and light fastness (rating = 8) properties were found as compared to Pigment Yellow 101. The computed absorption and emission values were found closer to the experimental values. The pigment exhibits higher first and second order hyperpolarizabilities (24 times more alpha(0), 248 times more beta(0) and 756 times more gamma value than urea). (C) 2017 Elsevier Ltd. All rights reserved.

引用

页码：121 / 125

页数：5

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