title: Synthesis and Characterization of Chitosan-Based Polyelectrolyte Complexes Doped with Xanthene Dyes.
abstract: Biocompatible chitosan-based polyelectrolyte complexes (PECs) doped with xanthene dyes (fluorescein, eosin Y, erythrosin B, rhodamine 6G) were synthesized and characterized by scanning electron microscopy, dynamic light scattering, zeta potential measurements, and absorption and luminescence (including polarized, time-resolved, and phosphorescence) spectroscopy. The results are discussed in terms of the mechanism and rigidity of dye-PEC binding, the heavy-atom effect in dyes and PEC stability. Eosin Y is found to be the optimal dopant, providing both a high dye content in PECs and a high quantum yield of fluorescence.
authors.affiliation: Siberian Federal University, Svobodny Prospect 79, 660041, Krasnoyarsk, Russia. ESlyusareva@sfu-kras.ru.
authors.forename: Evgenia
authors.initials: E
authors.lastname: Slyusareva
authors.affiliation: Siberian Federal University, Svobodny Prospect 79, 660041, Krasnoyarsk, Russia.
authors.forename: Marina
authors.initials: M
authors.lastname: Gerasimova
authors.affiliation: Siberian Federal University, Svobodny Prospect 79, 660041, Krasnoyarsk, Russia.
authors.forename: Vitaliy
authors.initials: V
authors.lastname: Slabko
authors.affiliation: Siberian Federal University, Svobodny Prospect 79, 660041, Krasnoyarsk, Russia.
authors.forename: Nina
authors.initials: N
authors.lastname: Abuzova
authors.affiliation: Technische Universität Dresden, Bergstraße 66b, 01062, Dresden, Germany.
authors.forename: Alexei
authors.initials: A
authors.lastname: Plotnikov
authors.affiliation: Technische Universität Dresden, Bergstraße 66b, 01062, Dresden, Germany.
authors.forename: Alexander
authors.initials: A
authors.lastname: Eychmüller
mesh_terms: D048271:Chitosan / Q000737:chemistry*; D004396:Coloring Agents / Q000737:chemistry*; D004573:Electrolytes / Q000737:chemistry*; D008855:Microscopy, Electron, Scanning; D013050:Spectrometry, Fluorescence; D014966:Xanthenes / Q000737:chemistry*
chemical_list: D004396:Coloring Agents; D004573:Electrolytes; D014966:Xanthenes; D048271:Chitosan
keywords: absorption; chitosan; fluorescence spectroscopy; polyelectrolyte complexes; xanthene dyes