title: Absorption and fluorescence spectroscopy of rhodamine 6G in titanium dioxide nanocomposites.
abstract: A comparison has been made between the spectroscopic properties of the laser dye rhodamine 6G (R6G) in mesostructured titanium dioxide (TiO(2)) and in ethanol. Steady-state excitation and emission techniques have been used to probe the dye-matrix interactions. We show that the TiO(2)-nanocomposite studied is a good host for R6G, as it allows high dye concentrations, while keeping dye molecules isolated, and preventing aggregation. Our findings have important implications in the context of solid state dye-lasers and microphotonic device applications.
authors.affiliation: Department of Physics and Centre for Biophotonics and Laser Science, University of Queensland, St Lucia Campus, Brisbane, Queensland 4072, Australia.
authors.forename: R
authors.initials: R
authors.lastname: Vogel
authors.forename: P
authors.initials: P
authors.lastname: Meredith
authors.forename: M D
authors.initials: MD
authors.lastname: Harvey
authors.forename: H
authors.initials: H
authors.lastname: Rubinsztein-Dunlop
mesh_terms: D004396:Coloring Agents / Q000737:chemistry; D000431:Ethanol / Q000737:chemistry; D008027:Light; D036103:Nanotechnology; D012235:Rhodamines / Q000737:chemistry*; D013050:Spectrometry, Fluorescence / Q000379:methods*; D013053:Spectrophotometry / Q000379:methods*; D014025:Titanium / Q000737:chemistry*; D014466:Ultraviolet Rays
chemical_list: D004396:Coloring Agents; D012235:Rhodamines; C009495:titanium dioxide; D000431:Ethanol; D014025:Titanium