title: The assembly of rotaxane-like dye/cyclodextrin/surface complexes on aluminium trihydroxide or goethite.
abstract: Simple azo-dyes carrying phosphonic acid and arsonic acid substituents such as 4-(4-hydroxyphenyl azo)phenylphosphonic acid (5) and 4-(4-hydroxyphenylazo)phenylarsonic acid (6) bind more strongly to high surface area oxides such as aluminium trihydroxide and goethite than their carboxylic and sulfonic acid analogues and the phosphonate-functionalized dyes have been shown to have greater humidity fastness when printed onto commercial alumina-coated papers. Adsorption isotherm measurements provide evidence for the formation of ternary dye/cyclodextrin/surface complexes. Dyes which form such ternary complexes show higher light fastness when printed onto alumina coated papers in an ink formulation containing alpha-cyclodextrin.
authors.affiliation: School of Chemistry, University of Edinburgh, Joseph Black Building, Kings Buildings, West Mains Road, Edinburgh, UKEH9 3JJ.
authors.forename: Rachel J
authors.initials: RJ
authors.lastname: Cooper
authors.forename: Philip J
authors.initials: PJ
authors.lastname: Camp
authors.forename: Ross J
authors.initials: RJ
authors.lastname: Gordon
authors.forename: David K
authors.initials: DK
authors.lastname: Henderson
authors.forename: Dorothy C R
authors.initials: DC
authors.lastname: Henry
authors.forename: Hamish
authors.initials: H
authors.lastname: McNab
authors.forename: Sonali S
authors.initials: SS
authors.lastname: De Silva
authors.forename: Daniel
authors.initials: D
authors.lastname: Tackley
authors.forename: Peter A
authors.initials: PA
authors.lastname: Tasker
authors.forename: Paul
authors.initials: P
authors.lastname: Wight