Shuqing Zhao , Yushan Wang , Binglian Bai , Haitao Wang , Jue Wei , Fengqin Zhang , Min Li
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引用次数: 0
Abstract
A carbazole-substituted triphenylamine-based acylhydrazone derivative (TPCZ) was synthesized, TPCZ exhibited mechanical force, acid, and light-responsive properties. Firstly, TPCZ exhibited mechanofluorochromic properties, the fluorescence emission switching from cyan to green after grinding. The change in emission was attributed to a crystalline-amorphous phase transition. Secondly, due to the protonation of –HCN- in TPCZ, TPCZ exhibited acidochromism, the color of a TPCZ film changed from slight yellow to orange under visible light, and the blue emission quenched under UV light upon fumigation with trifluoroacetic acid (TFA), and the fluorescence can be reversibly switched on and off upon reaction with TFA and triethylamine (TEA). Furthermore, TPCZ displayed photo-induced quenching phenomena, and the main reason for the quenching of fluorescence was that TPCZ underwent a trans-cis isomerization upon photo-irradiation. These foregoing stimuli responsive behaviors revealed that TPCZ may possess enormous potential application value in sensing, security label and anti-counterfeiting.
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.