title: Reduced fluorescence quenching of cyclodextrin-acetylene dye rotaxanes.
abstract: An acetylene dye rotaxane with alpha-CD has been synthesized using the Heck-Cassar-Sonogashira-Hagihara-type reaction in aqueous solution. Free dye with tetracarboxylic acids is found to be highly sensitive to various metal ions, showing high Stern-Volmer constants, KSV. As CD encapsulation protects and stabilizes the threaded chromophore against an outside quencher, metal-insensitive biological tags are an obvious application for this class of molecules.
authors.affiliation: School of Polymer, Textile and Fiber Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332, USA.
authors.forename: Jong S
authors.initials: JS
authors.lastname: Park
authors.forename: James N
authors.initials: JN
authors.lastname: Wilson
authors.forename: Kenneth I
authors.initials: KI
authors.lastname: Hardcastle
authors.forename: Uwe H F
authors.initials: UH
authors.lastname: Bunz
authors.forename: Mohan
authors.initials: M
authors.lastname: Srinivasarao