Design and intelligent colour regulation of luminescent silk chemically bonded with Eu(III) and Eu(III)/Tb(III) / Xingfang Xiao in COLORATION TECHNOLOGY, Vol. 134, N° 5 (10/2018)  

[article]  inCOLORATION TECHNOLOGY > Vol. 134, N° 5 (10/2018) . - p. 373-380 Titre : Design and intelligent colour regulation of luminescent silk chemically bonded with Eu(III) and Eu(III)/Tb(III) Type de document : texte imprimé Auteurs : Xingfang Xiao, Auteur ; Lipei Ren, Auteur ; Yawei Zhang ; Qian Zhang ; Sanping Zhao ; Ruina Liu ; Weilin Xu Année de publication : 2018 Article en page(s) : p. 373-380 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Analyse spectrale Fibres textiles synthétiques Luminescence Microscopie Morphologie (matériaux) Photostabilité Soie artificielle Solidité de la couleur Terres rares Index. décimale : 667.3 Teinture et impression des tissus Résumé : Design and successful synthesis of a series of novel luminescent silk chemically modified with europium(III) [Eu(III)] and europium(III)/terbium(III) [Eu(III)/Tb(III)] is reported. The modified silk specimens were characterised by infrared spectroscopy, fluorescence spectroscopy, scanning electron microscopy, and evaluated for their colour fastness. The rare earth ions were linked to the silk fibre via chemical bonds with the aid of tetracarboxylic acids used as the bridging ligands. Therefore, the modified silk had excellent luminescent stability and colour fastness to water and sunlight. Based on the blue fluorescence of silk along with the red and green luminescence of Eu(III) and Tb(III), respectively, under ultraviolet irradiation intelligent colour regulation was easily achieved by adjusting either the amount of Eu(III) or the ratio of Eu(III)/Tb(III). The Commission International de l'Eclairage chromaticity co‐ordinates calculated from the emission spectra also confirm the colour changes. Benefiting from the tunable colour and high stability, the modified silk could be an excellent candidate for applications in anti‐counterfeiting and flexible tunable light‐ emitting materials. Note de contenu : - EXPERIMENTAL : Materials and physical measurements - Synthesis of fluorescent silk modified by Eu(III) using BTCA as bridging ligand and PMA as bridging ligand - Synthesis of fluorescent silk modified by Eu(III)/Tb(III) with BTCA as bridging ligand and PMA as bridging ligand - RESULTS AND DISCUSSION : Structure an dmorphology of the silk modified by Ln(III) [Ln(III) = Eu(III) or Eu(III)L/Tb(III)] - Luminescence properties - Colour fastness to water and sunlight DOI : 10.1111/cote.12345 En ligne : https://onlinelibrary.wiley.com/doi/epdf/10.1111/cote.12345 Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=31162 [article]

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