Hyungkyu Moon , T. Sheshashena Reddy , Myung-Seok Choi
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引用次数: 0
Abstract
The development of reversible thermochromic dyes without leuco dyes or bisphenol presents an ongoing challenge. In this study, reversible five thermochromic diketopyrrolopyrrole (DPP) dyes were synthesized and characterized (DPP1–5). The optical and thermal properties of the DPP dyes were investigated, and DPP dye microcapsules were also prepared and characterized. We first prepared and characterized microcapsules of DPP dyes and investigated their thermochromic properties. The effect of the phenyl or thiophene substituents attached to the DPP on the thermochromism of the dye was also investigated. Phenyl–based microcapsules DPP1–3 showed a slight color change from deep orange to light yellow upon gradual heating from 30 to 60 °C, whereas thiophene–based DPP dye microcapsules exhibited pronounced color changes from blue to red upon a gradual temperature increase from 30 to 60 °C.
期刊介绍：
Dyes and Pigments covers the scientific and technical aspects of the chemistry and physics of dyes, pigments and their intermediates. Emphasis is placed on the properties of the colouring matters themselves rather than on their applications or the system in which they may be applied.
Thus the journal accepts research and review papers on the synthesis of dyes, pigments and intermediates, their physical or chemical properties, e.g. spectroscopic, surface, solution or solid state characteristics, the physical aspects of their preparation, e.g. precipitation, nucleation and growth, crystal formation, liquid crystalline characteristics, their photochemical, ecological or biological properties and the relationship between colour and chemical constitution. However, papers are considered which deal with the more fundamental aspects of colourant application and of the interactions of colourants with substrates or media.
The journal will interest a wide variety of workers in a range of disciplines whose work involves dyes, pigments and their intermediates, and provides a platform for investigators with common interests but diverse fields of activity such as cosmetics, reprographics, dye and pigment synthesis, medical research, polymers, etc.
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