title: Synthesis and photoelectrochemical performance of chalcogenopyrylium monomethine dyes bearing phosphonate/phosphonic acid substituents.
abstract: Chalcogenopyrylium monomethine dyes were prepared via condensation of a 4-methylchalcogenopyrylium compound with a chalcogenopyran-4-one bearing a 4-(diethoxyphosphoryl)phenyl substituent (or the phosphonic acid derivative). The dyes have absorbance maxima of 603-697 nm in the window where the solar spectrum is most intense. The dyes formed H-aggregates on TiO2, increasing the light-harvesting efficiency of the dyes. Shortcircuit photocurrent action spectra were acquired to evaluate the influence of dye structure on the photoelectrochemical performance.
authors.affiliation: Department of Chemistry, University at Buffalo, The State University of New York, Buffalo, New York 14260-3000, USA.
authors.forename: Matthew A
authors.initials: MA
authors.lastname: Bedics
authors.forename: Kacie R
authors.initials: KR
authors.lastname: Mulhern
authors.forename: David F
authors.initials: DF
authors.lastname: Watson
authors.forename: Michael R
authors.initials: MR
authors.lastname: Detty
mesh_terms: D018011:Chalcogens / Q000138:chemical synthesis* / Q000737:chemistry; D004396:Coloring Agents / Q000138:chemical synthesis* / Q000737:chemistry; D055664:Electrochemical Techniques; D015394:Molecular Structure; D063065:Organophosphonates / Q000737:chemistry*; D010757:Phosphorous Acids / Q000737:chemistry*; D055668:Photochemical Processes
chemical_list: D018011:Chalcogens; D004396:Coloring Agents; D063065:Organophosphonates; D010757:Phosphorous Acids; C570063:phosphonic acid