Abstract
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.
| Original language | English |
|---|---|
| Pages (from-to) | 3163-3170 |
| Number of pages | 8 |
| Journal | Journal of Physical Chemistry C |
| Volume | 121 |
| Issue number | 6 |
| DOIs | |
| Publication status | Published - Feb 16 2017 |
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ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Energy(all)
- Physical and Theoretical Chemistry
- Surfaces, Coatings and Films
Cite this
Stepwise "dark Photoswitching" of Photochromic Dimers in a Junction. / Olsen, Stine T.; Hansen, Thorsten; Nielsen, Mogens Brøndsted; Ratner, Mark A; Mikkelsen, Kurt V.
In: Journal of Physical Chemistry C, Vol. 121, No. 6, 16.02.2017, p. 3163-3170.Research output: Contribution to journal › Article
}
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.
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.
UR - http://www.scopus.com/inward/record.url?scp=85020940661&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85020940661&partnerID=8YFLogxK
U2 - 10.1021/acs.jpcc.6b10410
DO - 10.1021/acs.jpcc.6b10410
M3 - Article
VL - 121
SP - 3163
EP - 3170
JO - Journal of Physical Chemistry C
JF - Journal of Physical Chemistry C
SN - 1932-7447
IS - 6
ER -