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Charge Transfer and Tunable Ambipolar Effect induced by the assembly of Cu(II) Binuclear Complexes on Carbon Nanotube Field Effect Transistor Devices

G. Magadur, J.S. Lauret, G. Charron, F. Bouanis, E. Norman, V. Huc, C.S. Cojocaru, S. Gómez-Coca, E. Ruiz, T. Mallah, JACS 134, 7896 (2012)

The assembly of paramagnetic Cu2 complexes with a Schiff base scaffold possessing extended electron delocalization together with a quasi-planar structure onto carbon nanotubes induces a diameter selective charge transfer from the complex to the nanotubes leading to an interestingly large and tunable ambipolar effect. We used complementary techniques such as Electron Paramagnetic Resonance, electronic spectroscopy and photoluminescence to ensure the success of the assembly process and the integrity of the complex in the nanohybrid. We carried Density Functional Theory type calculations to rationalize the experimental results evidencing the selective enhanced interaction of the metal complexes with one type of nanotube.
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