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- W2009742511 endingPage "6655" @default.
- W2009742511 startingPage "6641" @default.
- W2009742511 abstract "A polyradical consisting of alternating triarylamine and perchlorotriphenylmethyl radical moieties was synthesized by Horner−Emmons reaction. This compound is the first polymeric neutral mixed-valence compound that shows an intervalence charge transfer (IV-CT) band in the NIR. Comparison of the absorption spectra of the polymer with those of a reference monomer shows that the IV-CT transition is confined to one repeating unit. HOMO and LUMO levels are at −5.5 and −4.5 eV vs vacuum, respectively, as estimated by cyclic voltammetry. A very low exciton binding energy is indicated by comparison with the optical band gap (1.2 eV). The electron transfer properties of the polymer were investigated in solution by fs-pump−probe transient absorption spectroscopy. After optical excitation, the polymer shows a biexponential decay in the ps time regime. The short-living, solvent-dependent component refers to the direct decay from the IV-CT state to the ground state and the long-living, solvent-independent component is tentatively attributed to an equilibrium formation of the IV-CT state and a completely charge separated state. The charge-transport properties were investigated in films in organic field-effect transistor (OFET) devices. Electron and hole mobilities are both about 3 × 10−5 cm2 V−1 s−1, demonstrating ambipolar transport behavior of the polymer." @default.
- W2009742511 created "2016-06-24" @default.
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- W2009742511 date "2010-11-19" @default.
- W2009742511 modified "2023-10-15" @default.
- W2009742511 title "Synthesis and Electron Transfer Characteristics of a Neutral, Low-Band-Gap, Mixed-Valence Polyradical" @default.
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- W2009742511 doi "https://doi.org/10.1021/cm102650h" @default.
- W2009742511 hasPublicationYear "2010" @default.