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Published on: November 5, 2014
Charge transfer and tunable ambipolar effect induced by assembly of Cu(II) binuclear complexes on carbon nanotube
Gurvan Magadur1, Jean-Sébastien Lauret, Gaëlle Charron
1Institut de Chimie Moléculaire et des Matériaux d'Orsay, Université de Paris Sud 11, CNRS, Bât. 420, 15 rue Georges Clemenceau, 91405 Orsay Cedex, France. gurvan.magadur@u-psud.fr
Abstract:
Assembly of paramagnetic Cu(2) 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, absorption spectroscopy, and photoluminescence to ensure the success of the assembly process and the integrity of the complex in the nanohybrid. We carried out 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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