Stepwise "Dark Photoswitching" of Photochromic Dimers in a Junction

Stine Tetzschner Olsen; Thorsten Hansen; Mogens Brøndsted Nielsen; Mark A. Ratner; Kurt Valentin Mikkelsen

doi:10.1021/acs.jpcc.6b10410

Stepwise "Dark Photoswitching" of Photochromic Dimers in a Junction

Stine Tetzschner Olsen, Thorsten Hansen, Mogens Brøndsted Nielsen, Mark A. Ratner, Kurt Valentin Mikkelsen

Department of Chemistry

2 Citations (Scopus)

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
Journal	The Journal of Physical Chemistry Part C
Volume	121
Issue number	6
Pages (from-to)	3163-3170
Number of pages	8
ISSN	1932-7447
DOIs	https://doi.org/10.1021/acs.jpcc.6b10410
Publication status	Published - 16 Feb 2017

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10.1021/acs.jpcc.6b10410

Cite this

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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",

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T1 - Stepwise "Dark Photoswitching" of Photochromic Dimers in a Junction

AU - Olsen, Stine Tetzschner

AU - Hansen, Thorsten

AU - Nielsen, Mogens Brøndsted

AU - Ratner, Mark A.

AU - Mikkelsen, Kurt Valentin

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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DO - 10.1021/acs.jpcc.6b10410

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