Three-state molecular potentiometer based on a non-symmetrically positioned in-backbone linker Palomino-Ruiz, Lucía Reiné Díaz, Pablo Rodríguez Márquez, Irene Álvarez Cienfuegos Rodríguez, Luis Agraït, Nicolás Cuerva Carvajal, Juan Manuel González Campaña, Araceli Leary, Edmund Miguel Álvarez, Delia Millán, Alba Zotti, Linda A. González, M. Teresa We report on the synthesis and single-molecule conductance of a para-oligo(phenylene)ethynylene (p-OPE) derivative with three well-defined conductance states. Employing theoretical models and comparing to reference compounds we show that this effect is due to the presence of the internal non-symmetrically placed pyrimidine ring, acting as an in-backbone anchor group. This is the first example in which the non-symmetric positioning of an internal binding site opens up two new conduction channels, giving rise, in a simple way, to a system that displays three conduction pathways which differ distinctively in both conductance and length 2022-09-05T08:27:13Z 2022-09-05T08:27:13Z 2021-07 info:eu-repo/semantics/article J. Mater. Chem. C, 2021,9, 16282-16289 http://hdl.handle.net/10481/76505 10.1039/d1tc02223g eng http://creativecommons.org/licenses/by-nc-nd/4.0/ info:eu-repo/semantics/openAccess Attribution-NonCommercial-NoDerivatives 4.0 Internacional