Pigments serve as 'minimised reflectors' to infrared radiation in POLYMERS PAINT COLOUR JOURNAL - PPCJ, Vol. 199, N° 4538 (07/2009)  

[article]  inPOLYMERS PAINT COLOUR JOURNAL - PPCJ > Vol. 199, N° 4538 (07/2009) . - p. 22-24 Titre : Pigments serve as 'minimised reflectors' to infrared radiation Type de document : texte imprimé Année de publication : 2009 Article en page(s) : p. 22-24 Langues : Anglais (eng) Catégories : Colorants -- Propriétés thermiques Pigments à effets spéciaux Index. décimale : 667.2 Colorants et pigments Résumé : How coated aluminium pigments with a dark appearance exhibit significant IR reflectivities. En ligne : https://drive.google.com/file/d/1cp6o5-Ivjd1J4cZwWilvO3aOnOr6XMKE/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=6060 [article]

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Synthesis, characterisation, and study of the photophysical properties of highly stable imidazole-based novel solid-state fluorescent azo colourants / Preetam N. Moolya in COLORATION TECHNOLOGY, Vol. 131, N° 2 (04/2015)  

[article]  inCOLORATION TECHNOLOGY > Vol. 131, N° 2 (04/2015) . - p. 104-109 Titre : Synthesis, characterisation, and study of the photophysical properties of highly stable imidazole-based novel solid-state fluorescent azo colourants Type de document : texte imprimé Auteurs : Preetam N. Moolya, Auteur ; Balu L. Gadilohar, Auteur ; Ganapati S. Shankarling, Auteur Année de publication : 2015 Article en page(s) : p. 104-109 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Analyse spectrale Caractérisation Colorants -- Propriétés thermiques Colorants -- Solubilité Colorants -- Synthèse Colorants azoïques Fluorescence Index. décimale : 667.3 Teinture et impression des tissus Résumé : Novel solid-state fluorescent azo colourants derived from 5-amino-2-(4-dimethylaminophenyl) benzimidazole as electron donor were synthesised. The colourants were characterised by means of elemental analysis, 1H NMR, and mass spectrometry. These colourants showed molar extinction coefficients in the range 12 000–48 000 dm3 mol?1 cm?1. These compounds exhibited solid-state fluorescence under short UV (254 nm). Electron coupling originating from broad ?-electron delocalisation and keto–enol form is responsible for the large Stokes shift as indicated by absorption and fluorescence spectra. These colourants were soluble in polar aprotic high-boiling solvents such as N,N-dimethylformamide, N,N-dimethylacetamide, and dimethyl sulphoxide, whereas they were insoluble in other common organic solvents. Thermogravimetric analysis of solid-state fluorescent colourants showed that two of the colourants showed thermal stability in the range 230–240 °C, whereas for the rest of the colourants it was found to be lower, and hence the two colourants could find application in the coloration of polymers. Note de contenu : - EXPERIMENTAL : Materials and equipment - Chemical synthesis - RESULTS AND DISCUSSION : Synthesis of solid-state fluorescent azo colourants - Spectroscopic properties of colourants 4a-4e - Thermal properties of the colourants - Solid-state fluorescence DOI : 10.1111/cote.12128 En ligne : https://onlinelibrary.wiley.com/doi/epdf/10.1111/cote.12128 Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=23657 [article]

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