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Fluorescent amino-substituted squaraine probes for bovine serum albumin / Katarzyna Jurek in COLORATION TECHNOLOGY, Vol. 133, N° 2 (04/2017)
[article]
Titre : Fluorescent amino-substituted squaraine probes for bovine serum albumin Type de document : texte imprimé Auteurs : Katarzyna Jurek, Auteur ; Janina Kabatc, Auteur ; Katarzyna Kostrzewska, Auteur Année de publication : 2017 Article en page(s) : p. 170-177 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Colorants -- Synthèse
Sérum-albumine
Sondes fluorescentes
Spectrophotométrie UV-Visible
Spectroscopie de fluorescence
SquarainesLes colorants squaraines sont une classe de colorants organiques présentant une fluorescence intense, typiquement dans la région infrarouge rouge et proche (les maxima d'absorption se trouvent entre 630 et 670 nm et leurs maxima d'émission se situent entre 650-700 nm). Ils sont caractérisés par leur système aromatique unique à anneaux à quatre chaînons dérivé de l'acide squaric . La plupart des squaraines sont encombrés par une attaque nucléophile de l'anneau central à quatre chaînons, qui est très déficient en électrons . Cette encombrement peut être atténué par la formation d'un rotaxane autour du colorant pour le protéger des nucléophiles. Ils sont actuellement utilisés comme capteurs pour les ions et récemment, avec l'avènement des dérivés de squanaine protégés, ont été exploités dans l'imagerie biomédicale.Index. décimale : 667.2 Colorants et pigments Résumé : The synthesis and spectroscopic properties of fluorescent amino-substituted squaraine dyes have been presented. The interaction between bovine serum albumin (BSA) and fluorescence probes derived from squaric acid was studied by UV-vis and fluorescence spectroscopies. The Benesi–Hildebrand, Lehrer, and Stern–Volmer equations were used to present the influence of BSA concentration on the binding constant for the process of association with squaraine dyes, as well as the effect of the concentration of fluorescence probes on the quenching process. It was also shown that the interaction between BSA and squaraine dyes is spontaneous. The number of binding sites to bovine serum albumin for a series of squaraine dyes has also been calculated. Note de contenu : - Synthesis
- Materials
- Preparation of dyes and protein solutions
- Spectroscopic measurementsDOI : 10.1111/cote.12264 En ligne : https://drive.google.com/file/d/1McvAGBRIvzZQ5HNfYaAdDaphWBWGgpkL/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=28231
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Code-barres Cote Support Localisation Section Disponibilité 18801 - Périodique Bibliothèque principale Documentaires Disponible Green synthesis of reactive dye for ink-jet printing in COLORATION TECHNOLOGY, Vol. 136, N° 2 (04/2020)
[article]
Titre : Green synthesis of reactive dye for ink-jet printing Type de document : texte imprimé Année de publication : 2020 Article en page(s) : p. 110-119 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Caractérisation
Chauffage
Chloropyrimidine
Colorants -- Synthèse
Colorants réactifs
Encre
Impression sur étoffes
Micro-ondes
Photostabilité
Résistance au lavage
VertIndex. décimale : 667.3 Teinture et impression des tissus Résumé : Chloropyrimidine-based reactive dyes are reported as well suited to textile printing; however, nucleophilic aromatic substitution of chloropyrimidines with amino-containing chromophores is slow and often suffers from poor yields. In this study, a novel and simple method was developed for the synthesis of chloropyrimidine-based reactive dye under microwave irradiation. In addition, the dye was also synthesised by conventional heating for comparison, which took both the reaction time and yield into account. The progress of the synthesis reactions concerned were monitored using capillary electrophoresis and the purity of the dye obtained was assessed by thin-layer chromatography. The structure of the synthesised trichloropyrimidine dye was confirmed by Fourier Transform–infrared spectroscopy and elemental analysis. It was found that the reaction rate of the nucleophilic aromatic substitution carried out under microwave irradiation was 4-fold faster than that carried out under conventional heating, although the enhancement in product yield was modest. These results suggest that microwave irradiation is an effective technique for the synthesis of chloropyrimidine-based reactive dyes. The synthesised chloropyrimidine dye was formulated into an ink and applied onto a wool fabric by ink-jet printing. The printed fabrics were steamed at 102°C for 5-25 minutes at 5-minute intervals. Good K/S and rate of dye fixation were obtained, both of which improved with increasing steaming time. The prints obtained exhibited reasonably good light and wash fastness properties. Note de contenu : - EXPERIMENTAL : Materials - Methods and instrumentation - Synthesis of yello 7-[(4-amino-2-methylphenyl)azo]-1,3-naphthalenedisulphonic acid dye (chromophore) - Synthesis of yello 7-[2,5,6-trichloro-4-pyrimidinyl)amino]-2-[(methylphenyl)azo]-1,3-naphthalenedisulphonic-acid dye - Ink-jet printing procedure - Measurement of K/S - Measurement of dye fixation - Colour fastness testing
- RESULTS AND DISCUSSION : Microwave irradiation versus conventional heating - Characterisation of yellow chromophore and dye 1 via microwave irradiated synthesis - Printing properties
- Table 1 : Comparison of reaction time and yield using microwave irradiation and conventional heatingDOI : https://doi.org/10.1111/cote.12450 Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=34230
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Code-barres Cote Support Localisation Section Disponibilité 21751 - Périodique Bibliothèque principale Documentaires Disponible A hemicyanine fluorescent reactive cationic dye : synthesis and applications on wool fabrics / Wei Zhang in COLORATION TECHNOLOGY, Vol. 131, N° 4 (08/2015)
[article]
Titre : A hemicyanine fluorescent reactive cationic dye : synthesis and applications on wool fabrics Type de document : texte imprimé Auteurs : Wei Zhang, Auteur ; Yan Zhang, Auteur ; Yanqiu Cheng, Auteur ; Chuanxiang Qin, Auteur ; Guoqiang Chen, Auteur Année de publication : 2015 Article en page(s) : p. 316-321 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Caractérisation
Colorants -- Propriétés tinctoriales
Colorants -- Synthèse
Fluorescence
Hemicyanine
Laine
Teinture -- Fibres textilesIndex. décimale : 667.3 Teinture et impression des tissus Résumé : A novel hemicyanine fluorescent reactive cationic dye was synthesised by the reaction between the free amino group of a hemicyanine fluorescent dye and 2,3-dibromopropionyl chloride. The dye was characterised by proton nuclear magnetic resonance spectroscopy, high-resolution mass spectrometry, ultraviolet-visible absorption spectrometry, and single-photon fluorescence spectrometry. The prepared dye was applied to wool fabrics to give fluorescent orange shades. The colour fastness of the dyed wool fabrics was tested. Results show that dyed fabrics using the novel hemicyanine fluorescent reactive cationic dye could be used as fluorescent clothing. Note de contenu : - EXPERIMENTAL : Materials - Synthesis - Dyeing process - Measurements
- RESULTS AND DISCUSSION : Characterisation - Dyeing properties - Fluorescent properties of the dyed wool fabricsDOI : 10.1111/cote.12159 En ligne : https://onlinelibrary.wiley.com/doi/epdf/10.1111/cote.12159 Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=24432
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Code-barres Cote Support Localisation Section Disponibilité 17353 - Périodique Bibliothèque principale Documentaires Disponible Improvement of the dyeing and fastness properties of a naphthalimide fluorescent dye using poly(amidoamine) dendrimer / Mousa Sadeghi-Kiakhani in COLORATION TECHNOLOGY, Vol. 131, N° 2 (04/2015)
[article]
Titre : Improvement of the dyeing and fastness properties of a naphthalimide fluorescent dye using poly(amidoamine) dendrimer Type de document : texte imprimé Auteurs : Mousa Sadeghi-Kiakhani, Auteur ; Siyamak Safapour, Auteur Année de publication : 2015 Article en page(s) : p. 142-148 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Analyse spectrale
Colorants -- Propriétés tinctoriales
Colorants -- Synthèse
DendrimèresUn dendrimère 1,2est une molécule dont la forme reprend celle des branches d'un arbre. Le nom vient du grec "δενδρον"/dendron, signifiant "arbre". En 1979, le premier dendrimère a été synthétisé par D.A. Tomalia3 et d'autres chercheurs de la Dow Chemical Company, et des dendrimères ont depuis été étudiés partout dans le monde pour leur forme unique.
Dans la synthèse des dendrimères, les monomères mènent à un polymère monodisperse, tel un arbre4. Il y a deux méthodes définies de synthèse des dendrimères: synthèse divergente5,6 et synthèse convergente7. La première assemble la molécule du noyau jusqu'à la périphérie et le second de l'extérieur vers le noyau.
Les propriétés des dendrimères sont engendrées par les structures moléculaires présentes sur sa surface. Par exemple, un dendrimère peut être hydrosoluble quand son extrémité-groupe est un groupe hydrophile, comme un groupe carboxylique. Il est théoriquement possible de concevoir un dendrimère hydrosoluble avec l'hydrophobicité interne, qui lui permettrait de porter un composé hydrophobe dans son intérieur (afin de transporter un composé thérapeutique hydrophobe dans le sang par exemple).
Une autre propriété est que le volume d'un dendrimère augmente quand il a une charge positive. Si cette propriété peut être appliquée, des dendrimères peuvent être employés pour les systèmes de transport d'éléments chimiques qui peuvent donner le médicament à la partie visée à l'intérieur du corps d'un patient directement (tumeur par exemple).
Les applications sont très diverses comme un élément organique électroluminescent, comme substitut sanguin, traitement anti-cancer, outils pour la multiplication de cellules, mais aussi en matériaux lors d'associations avec des nanotubes ou comme sondes sélectives et efficaces.
Fluorescence
Polyamide 66
Polyamidoamines
Solvatochromisme
Teinture -- Fibres textiles synthétiquesIndex. décimale : 667.3 Teinture et impression des tissus Résumé : In this study, 4-amino-9-methoxypropylnaphthalimide fluorescent dye (dye 1) was reacted with poly(amidoamine) dendrimer G = ?0.5 to prepare a naphthalimide–dendrimer hybrid dye (dye 2). The chemical structures of the synthesised dyes were confirmed by elemental analysis, Fourier transform infrared spectroscopy, 1H nuclear magnetic resonance spectroscopy, and ultraviolet-visible spectroscopy. The solvatochromism of the dyes was evaluated in various solvents with respect to visible absorption properties, and positive solvatochromism was observed by solvent polarity change from chloroform to ethanol. The dyeing ability of the synthesised dyes was investigated by their application onto nylon fabric, and nylon substrates dyed with dye 2 exhibited marked enhancement both in terms of colour strength and general fastness properties. The results of this study clearly demonstrated the high potential and performance of dye 2 as a novel promising fluorescent dye as compared with dye 1. Overall, it was inferred that the modification of the naphthalimide fluorescent dye with poly(amidoamine) denderimer could markedly improve the dyeing and fastness properties of the naphthalimide fluorescent dye on nylon fabrics. Note de contenu : - EXPERIMENTAL : Materials and apparatus - Synthesis of intermediates - Synthesis of dye 2 - Spectroscopic measurement of dyes - Dyebath preparation and dyeing - Fastness properties
- RESULTS AND DISCUSSION : Synthesis of dye 2 - Spectroscopic properties - Fluorescence properties - Nylon dyeing properties - Fastness properties - Colour characteristics of dyed nylon fabricsDOI : 10.1111/cote.12132 En ligne : https://onlinelibrary.wiley.com/doi/epdf/10.1111/cote.12132 Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=23673
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Code-barres Cote Support Localisation Section Disponibilité 17121 - Périodique Bibliothèque principale Documentaires Disponible Investigation into the development of novel lanthanide-based luminescent colorants for application to textiles and paper materials / David M. Lewis in COLORATION TECHNOLOGY, Vol. 139, N° 5 (10/2023)
[article]
Titre : Investigation into the development of novel lanthanide-based luminescent colorants for application to textiles and paper materials Type de document : texte imprimé Auteurs : David M. Lewis, Auteur ; Peter J. Broadbent, Auteur ; M. L. A. Rigout, Auteur ; C. M. Carr, Auteur ; C. C. Seaton, Auteur ; T. Swift, Auteur Année de publication : 2023 Article en page(s) : p. 610-620 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Bleu (couleur)
Colorants -- Synthèse
Impression jet d'encre
Impression sur étoffes
Impression sur papier
Luminescence
Luminophores
Métaux des terres rares
Rouge (couleur)
Structure chimique
VertIndex. décimale : 667.3 Teinture et impression des tissus Résumé : This article describes the synthesis and application of lanthanide-based luminophores for visualisation under short wavelength ultraviolet (UV) activation (typically 254 nm). Luminophores are chemical compounds which re-emit light of longer wavelength than typical fluorescence and phosphorescence, following photoexcitation, because of efficient energy transfer from the ligands to the lanthanide ion emission levels. The luminophores described in this article are all derived from europium and terbium metal complexes and cover the complete colour gamut. Selection of appropriate ligands allows for water solubility or water insolubility (if required pigment or disperse “dye” applications). Similar to dyeing or printing processes, the anionic complexes can be applied to polyamide fibres or to cellulosic fibres, whereas dispersions of the non-ionic complexes are suitable for polyester or cellulose acetate fibre application. The water-soluble derivatives are also suitable for ink-jet printing and the water-insoluble derivatives are suitable for lithographic or intaglio paper printing. The novel complexes are excited by radiation below 300 nm and thus cannot be activated by sunlight (the earth's atmosphere prevents light below about 300 nm reaching the surface). Accordingly, the photo-stability of the dyed materials and prints obtained is excellent. These materials could be used in security marking applications, for example bank-notes and passports, where they could replace the current fluorophores that are rendered visible under near UV light (typically 365 nm) illumination but exhibit relatively poor photo-stability. The development of an RGB (red, green and blue) colour palette for inkjet printing based on these innovative luminophores will significantly support the design of digitally printed security features. Note de contenu : - EXPERIMENTAL : Materials - Long-liquor application methods - Ink-jet printing with water-soluble luminophores - K-Bar imaging and offset printing - Luminescence viewing - Light-fastness assessment - Chemical structure analysis
- RESULTS AND DISCUSSION : Preparation of red water-soluble europium complex luminophores - Preparation of water-soluble green terbium(III) complex luminophores - Preparation of blue water-soluble europium(III) complex luminophores - Synthesis of water insoluble red luminophore pigment - Synthesis of water insoluble green luminophore pigment - Synthesis of water insoluble blue luminophore pigment - Structures of luminophores - Application of luminophores to textile substrates - Paper printingDOI : https://doi.org/10.1111/cote.12675 En ligne : https://onlinelibrary.wiley.com/doi/epdf/10.1111/cote.12675 Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=39839
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Code-barres Cote Support Localisation Section Disponibilité 24204 - Périodique Bibliothèque principale Documentaires Disponible Investigation into the reaction of reactive dyes with carboxylate salts and the application of carboxylate-modified reactive dyes to cotton / David M. Lewis in COLORATION TECHNOLOGY, Vol. 138, N° 1 (02/2022)
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