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Probes molecular switches

Key questions ahead of us concern new concepts for addressing individual molecular switches and the construction of more complex systems which incorporate several switchable functions. Advances in scanning - probe techniques and single molecule spectroscopy as well as supramolecular chemistry will play an important role in this endeavor. [Pg.451]

Further enjoying the collaboration with the Weiss and Allara groups in scanning probe microscopic (SPM) analyses, the next experiments involved the observance of discrete switching states within molecular devices. We have tracked over time the conductance of single and bundled molecular switches... [Pg.233]

SAMs of a molecular rectifier candidate - donor-jr-acceptor molecule 88 - were investigated with an alkanethiolate-covered STM probe by Ashwell et al. [25]. The molecular junction shown in Fig. 10.3 demonstrated highly asymmetric I(V) characteristics, which was taken as evidence for rectification of the monolayer. Depending on the experimental details, rectification ratios up to around 18 was observed. Reversible protonation and deprotonation of the donor moiety, C6H4N(CH3)2, in acidic or basic media, respectively, switched the rectification capability of the monolayer OFF and ON. This observation strongly indicates that the rectification behavior is an inherent property of the molecule. [Pg.377]

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See also in sourсe #XX -- [ Pg.827 ]



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