Donor–Acceptor C60-Containing Polyferrocenylsilanes: Synthesis, Characterization, and Applications in Photodiode Devices

Autor: Edward H. Sargent, Masato Nanjo, Paul W. Cyr, Kun Liu, Ian Manners
Rok vydání: 2008
Předmět:
Zdroj: Advanced Functional Materials. 18:470-477
ISSN: 1616-3028
1616-301X
DOI: 10.1002/adfm.200700315
Popis: A series of polyferrocenylsilane (PFS) random copolymers containing covalently bound pendant [C60]fullerene groups, the first well-characterized metallopolymers with pendant C60 units, have been prepared and characterized. The fullerene content of the prepared copolymers ranges from 7 to 24% relative to monomer unit. The desired copolymers were synthesized in three steps: metal-catalyzed ring opening polymerization of sila[1]ferrocenophanes was performed to synthesize random copolymers of poly(ferrocenylmethylphenylsilane-co-ferrocenylchloromethylsilane); the resulting random PFSs were then functionalized by reaction with 11-azido-1-undecanol to give PFSs with pendant azide groups; the desired donor–acceptor C60-containing PFSs were then synthesized by the reaction of the azide group in the side chains with C60 in toluene at 110 °C. The resulting C60-containing PFSs are air-stable and soluble in aromatic solvents, chloroform, or THF. The UV-vis spectra of these materials show broad absorption up to 800 nm. Thin films of these materials were examined as the active layer in rare examples of all solid-state sandwich-type diode devices based on ferrocene-fullerene dyads. The devices exhibit photoconducting and photovoltaic responses, with an open circuit potential of ca. 0.3 V under white light illumination.
Databáze: OpenAIRE
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