Probing charge transfer in benzodifuran-C60 dumbbell-type electron donor-acceptor conjugates: Ground- and excited-state assays

Hui Li, Christina Schubert, Pavlo O. Dral, Rubén D. Costa, Andrea La Rosa, Jürg Thüring, Shi Xia Liu, Chenyi Yi, Salvatore Filippone, Nazario Martín, Silvio Decurtins, Timothy Clark, Dirk M. Guldi

研究成果: Article

5 引用 (Scopus)

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Rigid electron donor-acceptor conjugates (1-3) that combine π-extended benzodifurans as electron donors and C60 molecules as electron acceptors with different linkers have been synthesized and investigated with respect to intramolecular charge-transfer events. Electrochemistry, fluorescence, and transient absorption measurements revealed tunable and structure-dependent charge-transfer processes in the ground and excited states. Our experimental findings are underpinned by density-functional theory calculations. Dumbbell arrays: A benzodifuran (BDF) donor is for the first time fused to two C60 molecules by different linkers to form triads 1-3 (see figure). Their redox behavior, absorption, fluorescence emission, and photoinduced intramolecular charge-transfer events have been investigated experimentally and theoretically. The lifetime of the resulting charge-separated state varies distinctly with the polarity of the solvents and the distance between the BDF and C60 units.

元の言語English
ページ(範囲)2910-2919
ページ数10
ジャーナルChemPhysChem
14
発行部数13
DOI
出版物ステータスPublished - 2013 9 16
外部発表Yes

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Physical and Theoretical Chemistry

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    Li, H., Schubert, C., Dral, P. O., Costa, R. D., La Rosa, A., Thüring, J., Liu, S. X., Yi, C., Filippone, S., Martín, N., Decurtins, S., Clark, T., & Guldi, D. M. (2013). Probing charge transfer in benzodifuran-C60 dumbbell-type electron donor-acceptor conjugates: Ground- and excited-state assays. ChemPhysChem, 14(13), 2910-2919. https://doi.org/10.1002/cphc.201300378