title: Absorption and fluorescence spectroscopic properties of 1- and 1,4-silyl-substituted naphthalene derivatives.
abstract: Silyl-substituted naphthalene derivatives at the 1- and 1,4-positions were synthesized and their UV absorption, fluorescence spectroscopic properties, and fluorescence lifetimes were determined. Analysis of the results shows that the introduction of silyl groups at these positions of the naphthalene chromophore/fluorophore causes shifts of the absorption maxima to longer wavelengths and increases in fluorescence intensities. Bathochromic shifts of the absorption maxima and increases in fluorescence intensities are also promoted by the introduction of methoxy and cyano groups at the naphthalene 4- and 5-positions. In addition, the fluorescence of 9,10-dicyanoanthracene is efficiently quenched by these naphthalene derivatives with Stern-Volmer plot calculated rate constants that depend on the steric bulk of the silyl groups.
authors.affiliation: Division of Material Sciences, Graduate School of Natural Science and Technology, Kanazawa University, Kakuma-machi, Kanazawa, Ishikawa 920-1192, Japan. maeda-h@t.kanazawa-u.ac.jp
authors.forename: Hajime
authors.initials: H
authors.lastname: Maeda
authors.forename: Tomohiro
authors.initials: T
authors.lastname: Maeda
authors.forename: Kazuhiko
authors.initials: K
authors.lastname: Mizuno
mesh_terms: D000873:Anthracenes / Q000737:chemistry; D005453:Fluorescence; D005456:Fluorescent Dyes / Q000032:analysis / Q000138:chemical synthesis*; D006859:Hydrogen / Q000737:chemistry*; D015394:Molecular Structure; D009281:Naphthalenes / Q000032:analysis / Q000138:chemical synthesis*; D009570:Nitriles / Q000737:chemistry; D017646:Organosilicon Compounds / Q000032:analysis / Q000138:chemical synthesis*; D013050:Spectrometry, Fluorescence; D013056:Spectrophotometry, Ultraviolet
chemical_list: C521244:9,10-dicyanoanthracene; D000873:Anthracenes; D005456:Fluorescent Dyes; D009281:Naphthalenes; D009570:Nitriles; D017646:Organosilicon Compounds; D006859:Hydrogen