Réussir la rectification du courant électrique par des dérivés de ferrocènyle triazole

International audienceRectenna solar cells are electronic devices which were described for the first time in the 70s and these devices allow transforming light into electricity, thanks to the association of a nano-antenna and a rectifying element. Due to the size of the device and the challenge of rectification of the terahertz frequencies, the realization of such devices remains difficult. Rectification of current by molecules is a really active research field due to the possibility to drastically reduce the size of electronic devices. Theorized by Aviram and Ratner, the rectification can be achieved by an asymmetric molecule, enabling the electrons to be transferred in a preferential direction through the compound. The state of the art of the organic molecular rectifiers shows rectification ratios up to 10 5. Such ratios were obtained with molecules composed of a ferrocene unit, which is the key for the rectification process, linked to an insulating alkyl chain. At present, only few studies have been devoted to control the orientation of the molecular rectifiers. More precisely, the possibility to anchor onto two different electrodes while controlling their orientation has only been scarcely investigated. In our case, such a control of the molecular orientation has been obtained by developing a two-step process based on Click Chemistry. Here, we present unprecedented works on the synthesis of new ferrocene derivatives designed as molecular rectifiers. Especially, a special effort is devoted: firstly, to allow the molecule to be covalently linked to two metal electrodes (allowing implementation into future device) and secondly to definitely control the orientation of the molecular rectifier relative to both electrodes thanks to Click Chemistry. Here, we present unprecedented works on the synthesis of new ferrocene derivatives designed as molecular rectifiers. Especially, a special effort is devoted: firstly, to allow the molecule to be covalently linked to two metal electrodes (allowing implementation into future device) and secondly to definitely control the orientation of the molecular rectifier relative to both electrodes thanks to Click Chemistr