| Titre : |
A diverse color-tunable luminous polyurethane leather coating based on long persistent phosphors and photochromic spiropyrans |
| Type de document : |
texte imprimé |
| Auteurs : |
Saiqi Tian, Auteur ; Zhe Sun, Auteur ; Haojun Fan, Auteur ; Jun Yan, Auteur |
| Année de publication : |
2019 |
| Article en page(s) : |
p. 138-145 |
| Note générale : |
Bibliogr. |
| Langues : |
Américain (ame) |
| Catégories : |
Analyse spectrale
Caractérisation
Couleur -- Analyse
Cuir
Fluorescence
Polyuréthanes
Revêtements organiques
Spyropyrane
|
| Index. décimale : |
675 Technologie du cuir et de la fourrure |
| Résumé : |
A diverse color-tunable luminous polyurethane leather coating (CLPU) which can reversibly change color as well as fluorescent emission through the UV-vis or UV-darkness circle was prepared, via covalent incorporation of amino-functionalized phosphors and photochromic 1-(2-Hydroxyethyl)-3,3-Dimethylindolino-6’-nitrobenzopyrylospiran (SP). X-Ray Diffraction (XRD), X-ray photoelectron spectroscopy (XPS), UV-vis absorption spectra, reflectance spectra, fluorescent spectra as well as the migration percentage were measured to characterize the resultant samples structure and properties. In daylight, CLPU appears white before 365 UV irradiation and violet after UV irradiation, due to the transition of the spiro forms of spiropyran to merocyanine forms. In darkness, CLPU emits intense green light before UV irradiation, and the light changes to orange after UV irradiation, due to the phosphors showing pleasant diverse color-tunable luminous effect. |
| Note de contenu : |
- EXPERIMENTAL : Materials - Preparation of CLPU - PU and PU/SP preparation - Film and leather preparation - Characterization
- RESULTS AND DISCUSSION : Structure analysis - Coloration and de-coloration process - Fluorescent properties - Diverse color-tunable luminous effect - Thermal migration properties |
| En ligne : |
https://drive.google.com/file/d/1-LBKUUq7Fx44CKYyVNl40nzYZkTz8UdY/view?usp=drive [...] |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=32275 |
in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA) > Vol. CXIV, N° 4 (04/2019) . - p. 138-145
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A diverse color-tunable luminous polyurethane leather coating based on long persistent phosphors and photochromic spiropyrans in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CXIV, N° 4 (04/2019)
