Issue 45, 2021

Three-state molecular potentiometer based on a non-symmetrically positioned in-backbone linker

Abstract

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.

Graphical abstract: Three-state molecular potentiometer based on a non-symmetrically positioned in-backbone linker

Supplementary files

Article information

Article type
Paper
Submitted
13 Мам. 2021
Accepted
28 Шіл. 2021
First published
30 Шіл. 2021

J. Mater. Chem. C, 2021,9, 16282-16289

Three-state molecular potentiometer based on a non-symmetrically positioned in-backbone linker

L. Palomino-Ruiz, P. Reiné, I. R. Márquez, L. Álvarez de Cienfuegos, N. Agraït, J. M. Cuerva, A. G. Campaña, E. Leary, D. Miguel, A. Millán, L. A. Zotti and M. T. González, J. Mater. Chem. C, 2021, 9, 16282 DOI: 10.1039/D1TC02223G

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