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Stefani, Andrea
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Publications (6/6 displayed)
- 2023Spin-dependent charge transmission through chiral 2T3N self-assembled monolayer on Aucitations
- 2023Spin-dependent charge transmission through chiral 2T3N self-assembled monolayer on Aucitations
- 2023Spin-dependent electrochemistry and electrochemical enantioselective recognition with chiral methylated bis(ethylenedithio)-tetrathiafulvalenescitations
- 2022Magnetic Field Effect on the Handedness of Electrodeposited Heusler Alloycitations
- 2021Electrodeposition of Cu on PEDOT for a Hybrid Solid-State Electronic Devicecitations
- 2021Electrodeposition of Cu on PEDOT for a Hybrid Solid-State Electronic Devicecitations
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article
Spin-dependent charge transmission through chiral 2T3N self-assembled monolayer on Au
Abstract
<jats:p>A gold surface is functionalized by chemisorption of the enantiopure N,N′-bis-[2,2′;5′,2″]tert-thiophene-5-yl methylcyclohexane-1,2-diamine (2T3N), a chiral oligothiophene derivative, via overnight incubation in a 2T3N ethanol solution. The Au|2T3N interface is characterized by x-ray photoelectron circular dichroism and comparing x-ray photoemission spectroscopy and electro-desorption results. Charge transmission at the Au|2T3N| solution interface is characterized by recording the cyclic voltammetry of the Fe(III)/Fe(II) reversible redox couple, finding a charge transfer rate constant, k°, variation from 1 × 10−1 to 3.3 × 10−2 cm s−1, when comparing the bare Au and the Au|2T3N interfaces, respectively. The “anomalous” high value of k° found for the chiral Au|2T3N interface can be rationalized on the basis of the chiral-induced spin selectivity effect, as further proved by magnetic–conductive atomic force microscopy measurements at room temperature. A spin polarization of about 30% is found.</jats:p>