Fluorescent Dyes and Pigments

Ismael, Rami; Schwander, Hansrudolf; Hendrix, Paul

doi:10.1002/14356007.a11_279.pub2

Cited by 9 publications

(3 citation statements)

References 33 publications

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“…Nagao et al exploited these benefits in the synthesis of benzazoles using water as a solvent at high temperature and pressure . Benzazole derivatives have diverse applications as fluorescent molecules, pharmaceuticals, veterinary anthelmintics, and fungicides. − Benzazole synthesis is commonly achieved by reaction of ortho -phenylenediamines by reaction with carbonyls or carbonyl equivalents . For initial optimization, Nagao et al cyclized N -[2-(phenylamino)phenyl]benzamide.…”

Section: Temperaturementioning

confidence: 99%

The Hitchhiker’s Guide to Flow Chemistry

et al. 2017

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Flow chemistry involves the use of channels or tubing to conduct a reaction in a continuous stream rather than in a flask. Flow equipment provides chemists with unique control over reaction parameters enhancing reactivity or in some cases enabling new reactions. This relatively young technology has received a remarkable amount of attention in the past decade with many reports on what can be done in flow. Until recently, however, the question, "Should we do this in flow?" has merely been an afterthought. This review introduces readers to the basic principles and fundamentals of flow chemistry and critically discusses recent flow chemistry accounts.

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Section: Temperaturementioning

confidence: 99%

The Hitchhiker’s Guide to Flow Chemistry

et al. 2017

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“…At present, the 3-(diethylamino)-7-oxo-7 H -benzo[4,5]imidazo[1,2- a ]chromeno[3,2- c ]pyridine-6-carbonitrile dye (chromene 3) and the 3-(diethylamino)-7-imino-7 H -benzo[4,5]imidazo[1,2- a ]chromeno[3,2- c ]pyridine-6-carbonitrile dye (chromene 13) are utilized in the coloring plastics and synthetic fabers (Figure ). Their trade names are Solvent Red 197 and Solvent Red 196 (CAS 52372-39-1 and 52372-36-8), respectively, being widely used for industrial coloring engineering plastics and as luminescent probes . These compounds were also investigated in the form of active media in order to implement them as a tunable laser in the methanol solvent with a wide tunable region (70 nm) .…”

Section: Introductionmentioning

confidence: 99%

Computational and Experimental Investigation of the Optical Properties of the Chromene Dyes

et al. 2015

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Absorption and fluorescence spectra of the chromene 3 and chromene 13 dyes are studied experimentally and by density functional theory (DFT) including vibronic structure analysis. Vertical electronic absorption spectra are also calculated with the ab initio multiconfiguration method XMC-QDTP2. The vibronic progression for the S0 → S1 electronic transition is calculated within the Franck-Condon approximation including Dushinsky effect and promoting modes are analyzed. The laser-active solid-state media with high efficiency and long operation time are created implementing the studied dyes. The results of investigation indicate that the studied compounds can be used as effective laser dyes in the red range of visible light.

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“…Molecules in a fluorescent body absorb radiation near the UV region of shorter wavelengths and high energy, converting it into visible radiation of longer wavelengths. Thus, fluorescent bodies produce a characteristic "brightness" of light, whereas those of conventional colors only reflect a small portion of energy from the visible spectrum [9][10][11].…”

Section: Introductionmentioning

confidence: 99%

Innovative High-Visibility Protective Clothing Development

et al. 2021

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Technical clothing with light-responsive features for outdoor sports practiced in environments with low visibility is extremely important for athletes’ safety. Lack of signaling by users and visibility for drivers is one of accidents causes, namely run overs, which can leave serious consequences. The products available on the market lack efficiency and their design is not appealing which makes the development of these new materials a compelling need. Therefore, fluorescent and phosphorescent functional finishings with ability to provide illuminant signalization without compromising the design and/or color of clothing as well as comfort and ergonomics, were developed and applied in the textile structure by knife over roll coating technology. The greatest challenge is to integrate the high visibility materials without compromising the design of the garment and accomplish the European Standard of Protective clothing: Enhanced visibility equipment for medium risk situations and test methods and requirements—EN 17353 (that supersedes EN1150:1999 and allows more freedom in the design of the apparel) published in 2020. Phosphorescent materials were evaluated by luminance decay according to DIN 67510, before and after fastness to wash tests. Results obtained regarding high visibility functional finishings and the integration of the materials developed in the final sports collection will be presented.

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Fluorescent Dyes and Pigments

Cited by 9 publications

References 33 publications

The Hitchhiker’s Guide to Flow Chemistry

The Hitchhiker’s Guide to Flow Chemistry

Computational and Experimental Investigation of the Optical Properties of the Chromene Dyes

Innovative High-Visibility Protective Clothing Development

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