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Metal-Ion-Promoted Electron Transfer between Tetrathiafulvalene and Quinone Units Within a Calix[4]arene Framework and Tuning through Coordination of the Neighboring Crown Ether with a Sodium Cation

Authors

  • Fei Sun,

    1. Beijing National Laboratory for Molecular Sciences, Organic Solids Laboratory, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190 (P. R. China), Fax: (+86) 10-62562693
    2. Graduate School of Chinese Academy of Sciences, Beijing 100049 (P. R. China)
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  • Fang Hu,

    1. Beijing National Laboratory for Molecular Sciences, Organic Solids Laboratory, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190 (P. R. China), Fax: (+86) 10-62562693
    2. Graduate School of Chinese Academy of Sciences, Beijing 100049 (P. R. China)
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  • Dr. Guanxin Zhang,

    Corresponding author
    1. Beijing National Laboratory for Molecular Sciences, Organic Solids Laboratory, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190 (P. R. China), Fax: (+86) 10-62562693
    • Beijing National Laboratory for Molecular Sciences, Organic Solids Laboratory, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190 (P. R. China), Fax: (+86) 10-62562693

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  • Prof. Dr. Deqing Zhang

    Corresponding author
    1. Beijing National Laboratory for Molecular Sciences, Organic Solids Laboratory, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190 (P. R. China), Fax: (+86) 10-62562693
    • Beijing National Laboratory for Molecular Sciences, Organic Solids Laboratory, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190 (P. R. China), Fax: (+86) 10-62562693

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Abstract

A new calix[4]arene with tetrathiafulvalene (TTF), quinone, and crown ether units in the lower rim was designed and synthesized with the aim to investigate the possibility to tune the metal-ion promoted electron transfer by coordination of the crown ether unit with additional metal ions. Both absorption and electron spin resonance (ESR) spectroscopic studies clearly indicate that electron transfer occurs efficiently from TTF to the quinone units in the presence of Sc3+/Pb2+/Zn2+. Moreover, the intramolecular electron transfer within induced by Zn2+ can be switched off by addition of Na+ and further turned on by addition of either Sc3+ or Pb2+.

Abstract

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