title: Electrochromic poly(acetylene)s with switchable visible/near-IR absorption characteristics.
abstract: Ferrocene is incorporated into a poly(acetylene) derivative via the postpolymerization amidation of a polymer precursor bearing pentafluorophenyl ester-leaving groups with aminoferrocene. While the neutral polymer exhibits a strong absorbance at 553 nm due to its conjugated backbone, oxidation of the ferrocene moieties with silver tetrafluoroborate causes the material to absorb in the near-IR (λ max ≈ 1215 nm). Subsequent reduction of the oxidized polymer with decamethylferrocene restores the initial absorbance profile, demonstrating that the material features switchable visible/near-IR absorption characteristics.
authors.affiliation: Institute of Technical and Macromolecular Chemistry, University Hamburg, Bundesstraße 45, 20146, Hamburg, Germany.
authors.forename: Anja C
authors.initials: AC
authors.lastname: Pauly
authors.affiliation: Department of Chemistry and Biochemistry, The University of Texas at Austin, 1 University Station A5300, Austin, Texas, 78712, USA.
authors.forename: C Daniel
authors.initials: CD
authors.lastname: Varnado
authors.affiliation: Department of Chemistry and Biochemistry, The University of Texas at Austin, 1 University Station A5300, Austin, Texas, 78712, USA.|WCU Program of Chemical Convergence for Energy and Environment, School of Chemical and Biological Engineering, Seoul National University, Seoul, 151-744, Korea.
authors.forename: Christopher W
authors.initials: CW
authors.lastname: Bielawski
authors.affiliation: Institute of Technical and Macromolecular Chemistry, University Hamburg, Bundesstraße 45, 20146, Hamburg, Germany.|WCU Program of Chemical Convergence for Energy and Environment, School of Chemical and Biological Engineering, Seoul National University, Seoul, 151-744, Korea.
authors.forename: Patrick
authors.initials: P
authors.lastname: Theato
mesh_terms: D053279:Polyynes / Q000737:chemistry*; D019265:Spectroscopy, Near-Infrared / Q000379:methods*
chemical_list: D053279:Polyynes
keywords: conjugated polymers; electrochromism; ferrocene; functionalization of polymers