title: 'Naturalization' of textile disperse dyes through glycoconjugation: the case of a bis(2-hydroxyethyl) group containing azo dye.
abstract: A family of five strictly related glycoconjugated azo dyes (GADs), characterized by the presence of the same chromophore and a variable number (1-4) of deprotected hexose units, has been prepared by employing succinate bridges for connecting the azo dye and the sugar portions. The modulation of the hydrophilic portion determines the appreciable changes in the water solubility of GADs. In all the cases, however, hydrophobic fibres (polyester) were homogeneously dyed with GADs at temperatures lower than that used for original azo dyes, at atmospheric pressure, and avoiding the use of surfactants. Furthermore, GADs show an interesting multipurpose character leading to dyeing well also the natural fibres as, for instance, wool. The presence of a variable number of hexose units in the different GADs determines some changes in the colour intensity of dyed fabrics, but in all the cases an appreciable rubbing and water fastness were maintained.
authors.affiliation: Dipartimento di Chimica Organica U. Shiff, Università di Firenze, Via della Lastruccia 13, I-50019 Sesto Fiorentino (FI), Italy. roberto.bianchini@unifi.it
authors.forename: Roberto
authors.initials: R
authors.lastname: Bianchini
authors.forename: Giorgio
authors.initials: G
authors.lastname: Catelani
authors.forename: Riccardo
authors.initials: R
authors.lastname: Cecconi
authors.forename: Felicia
authors.initials: F
authors.lastname: D'Andrea
authors.forename: Elena
authors.initials: E
authors.lastname: Frino
authors.forename: Jalal
authors.initials: J
authors.lastname: Isaad
authors.forename: Massimo
authors.initials: M
authors.lastname: Rolla
mesh_terms: D001391:Azo Compounds / Q000737:chemistry*; D004396:Coloring Agents / Q000737:chemistry*; D019906:Nuclear Magnetic Resonance, Biomolecular; D013783:Textile Industry
chemical_list: D001391:Azo Compounds; D004396:Coloring Agents