Performance Evaluation of Fluorescence and Photostability of Coumarin Disperse Yellow 82

Abstract

This paper describes some significant fluorescent and photostability properties of Coumarin Disperse Yellow 82. The study aims at spectrophotometric colour measurements on fluorescence of Coumarin Disperse Yellow 82. Spectral parameters such as relative strength percentage and reflectance with different dye concentrations performance on polyester and polyester/cotton substrates were assessed. Light fastness property was also evaluated. Evaluation of photodegradation quantum yield of the dye in methanol, ethanol and N,N-dimethylformamide (DMF) under aerobic and anaerobic conditions have also been investigated. The relative strength, reflectance and light fastness of dyed polyester for the different dye concentrations were proven to be better in comparison to dyed polyester/cotton blend. The photodegradation quantum yield of dye in methanol, ethanol and DMF solutions under anaerobic condition showed higher dye photodegradation quantum in DMF for the various concentrations of dye used. Under aerobic condition irradiation under nitrogen atmosphere attained higher degradation whereas the presence of air reduced degradation.

Improving the efficiency and stability of perovskite solar cells using π-conjugated aromatic additives with differing hydrophobicities

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Optical Behavior of Curcuminoid Hybrid Systems as Coatings Deposited on Polyester Fibers

“…Textile materials used in signaling applications for road equipment, sports equipment, materials for special services (firefighters, police, rescue) or advertising are colored with fluorescent dyes, which cause a deep increase in color [1][2][3]. Usually, for such equipment, a polyester support is used, and the dyeing is performed by mass coloration.…”