Stepwise "Dark Photoswitching" of Photochromic Dimers in a Junction

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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 languageEnglish
JournalThe Journal of Physical Chemistry Part C
Volume121
Issue number6
Pages (from-to)3163-3170
Number of pages8
ISSN1932-7447
DOIs
Publication statusPublished - 2017

ID: 176370843