title: Aggregate formation of Rhodamine 6G in anisotropic solvents.
abstract: The aggregation of Rhodamine 6G in liquid crystalline solutions was studied using polarised spectroscopy and in a guest-host system based on homogeneous-homeotropic alignment. The orientation of the dye molecules (guest) was controlled using an electric field, and this enabled the contrast ratio R of the dye to be obtained by electrically switching. The excitonic treatment of the absorption spectra suggests a coplanar structure for the dimeric aggregates.
authors.affiliation: Department of Chemistry, Faculty of Science, Gilan University, Rasht, Iran. aggilani@cd.gu.ac.ir
authors.forename: A G
authors.initials: AG
authors.lastname: Gilani
authors.forename: R
authors.initials: R
authors.lastname: Sariri
authors.forename: K
authors.initials: K
authors.lastname: Bahrpaima
mesh_terms: D016880:Anisotropy; D004563:Electrochemistry; D005456:Fluorescent Dyes / Q000737:chemistry*; D015394:Molecular Structure; D012235:Rhodamines / Q000737:chemistry*; D012997:Solvents; D013053:Spectrophotometry
chemical_list: D005456:Fluorescent Dyes; D012235:Rhodamines; D012997:Solvents; C026188:rhodamine 6G