6 research outputs found
Recommended from our members
Effect of Ring Strain on the Charge Transport of a Robust Norbornadiene-Quadricyclane-Based Molecular Photoswitch.
Integrating functional molecules into single-molecule devices is a key step toward the realization of future computing machines based on the smallest possible components. In this context, photoswitching molecules that can make a transition between high and low conductivity in response to light are attractive candidates. Here we present the synthesis and conductance properties of a new type of robust molecular photothermal switch based on the norbornadiene (NB)-quadricyclane (QC) system. The transport through the molecule in the ON state is dominated by a pathway through the π-conjugated system, which is no longer available when the system is switched to the OFF state. Interestingly, in the OFF state we find that the same pathway contributes only 12% to the transport properties. We attribute this observation to the strained tetrahedral geometry of the QC. These results challenge the prevailing assumption that current will simply flow through the shortest through-bond path in a molecule
Effect of Ring Strain on the Charge Transport of a Robust Norbornadiene–Quadricyclane-Based Molecular Photoswitch
Integrating
functional molecules into single-molecule devices is
a key step toward the realization of future computing machines based
on the smallest possible components. In this context, photoswitching
molecules that can make a transition between high and low conductivity
in response to light are attractive candidates. Here we present the
synthesis and conductance properties of a new type of robust molecular
photothermal switch based on the norbornadiene (NB)–quadricyclane
(QC) system. The transport through the molecule in the ON state is
dominated by a pathway through the π-conjugated system, which
is no longer available when the system is switched to the OFF state.
Interestingly, in the OFF state we find that the same pathway contributes
only 12% to the transport properties. We attribute this observation
to the strained tetrahedral geometry of the QC. These results challenge
the prevailing assumption that current will simply flow through the
shortest through-bond path in a molecule