TY - JOUR
T1 - Stepwise "dark Photoswitching" of Photochromic Dimers in a Junction
AU - Olsen, Stine T.
AU - Hansen, Thorsten
AU - Nielsen, Mogens Brøndsted
AU - Ratner, Mark A.
AU - Mikkelsen, Kurt V.
N1 - Publisher Copyright:
© 2016 American Chemical Society.
Copyright:
Copyright 2017 Elsevier B.V., All rights reserved.
PY - 2017/2/16
Y1 - 2017/2/16
N2 - Molecular photoswitches incorporated in a junction present a way to achieve light-controlled conductance switching by photoisomerization. Yet, the two isomers might also interconvert upon charging of the molecule if this results in a change in their relative energies. This behavior (current-induced switching) has been termed dark photoswitching and was observed for the dihydroazulene-vinylheptafulvene couple in a junction. In this theoretical study, we expand this concept to dimeric structures containing two dihydroazulene units linked through meta- or para-phenylene bridges and anchored to the electrodes through different linkers. In particular, we show how stepwise dark photoswitching can be achieved for certain redox states.
AB - Molecular photoswitches incorporated in a junction present a way to achieve light-controlled conductance switching by photoisomerization. Yet, the two isomers might also interconvert upon charging of the molecule if this results in a change in their relative energies. This behavior (current-induced switching) has been termed dark photoswitching and was observed for the dihydroazulene-vinylheptafulvene couple in a junction. In this theoretical study, we expand this concept to dimeric structures containing two dihydroazulene units linked through meta- or para-phenylene bridges and anchored to the electrodes through different linkers. In particular, we show how stepwise dark photoswitching can be achieved for certain redox states.
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U2 - 10.1021/acs.jpcc.6b10410
DO - 10.1021/acs.jpcc.6b10410
M3 - Article
AN - SCOPUS:85020940661
VL - 121
SP - 3163
EP - 3170
JO - Journal of Physical Chemistry C
JF - Journal of Physical Chemistry C
SN - 1932-7447
IS - 6
ER -