SCHEDULED MAINTENANCE
Three-state molecular potentiometer based on a non-symmetrically positioned in-backbone linker†
Lucía
Palomino-Ruiz, 
‡ab
Pablo
Reiné,
‡a
Irene
R. Márquez,
c
Luis
Álvarez de Cienfuegos,
a
Nicolás
Agraït,
bde
Juan M.
Cuerva,
a
Araceli G.
Campaña,
a
Edmund
Leary,
b
Delia
Miguel,
*f
Alba
Millán,
*a
Linda A.
Zotti
*eg
and
M. Teresa
González
*b
‡ab
Pablo
Reiné,
‡a
Irene
R. Márquez,
c
Luis
Álvarez de Cienfuegos,
a
Nicolás
Agraït,
bde
Juan M.
Cuerva,
a
Araceli G.
Campaña,
a
Edmund
Leary,
b
Delia
Miguel,
*f
Alba
Millán,
*a
Linda A.
Zotti
*eg
and
M. Teresa
González
*b
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.
- This article is part of the themed collections: Celebrating International Women’s Day: Women in Materials Science, Special issue in honour of Kees Hummelen and 2021 Journal of Materials Chemistry C most popular articles
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