White Light Emission from a Simple Mixture of Fluorescent Organic Compounds

Three fluorescent organic compounds-furocoumarin (FC), dansyl aniline (DA), and 7-hydroxycoumarin-3-carboxylic acid (CC)-are mixed to produce almost pure white light emission (WLE). This novel mixture is immobilised in silica aerogel and applied as a coating to a UV LED to demonstrate its applicabil...

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Published inScientific reports Vol. 9; no. 1; pp. 11834 - 8
Main Authors Muhamad Sarih, Norfatirah, Myers, Peter, Slater, Anna, Slater, Ben, Abdullah, Zanariah, Tajuddin, Hairul Anuar, Maher, Simon
Format Journal Article
LanguageEnglish
Published England Nature Publishing Group 14.08.2019
Nature Publishing Group UK
Nature Portfolio
Subjects
Aniline
Carboxylic acids
Coumarin
Diodes
Ethanol
Organic compounds
Silica
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Summary:Three fluorescent organic compounds-furocoumarin (FC), dansyl aniline (DA), and 7-hydroxycoumarin-3-carboxylic acid (CC)-are mixed to produce almost pure white light emission (WLE). This novel mixture is immobilised in silica aerogel and applied as a coating to a UV LED to demonstrate its applicability as a low-cost, organic coating for WLE via simultaneous emission. In ethanol solution and when immobilised in silica aerogel, the mixture exhibits a Commission Internationale d'Eclairage (CIE) chromaticity index of (0.27, 0.33). It was observed that a broadband and simultaneous emission involving coumarin carboxylic acid, furocoumarin and dansyl aniline played a vital role in obtaining a CIE index close to that of pure white light.
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ISSN:2045-2322
2045-2322
DOI:10.1038/s41598-019-47847-5