  We have carried out a preliminary design and simulation of a single-electron
resistive switch based on a system of two linear, parallel,
electrostatically-coupled molecules: one implementing a single-electron
transistor and another serving as a single-electron trap. To verify our design,
we have performed a theoretical analysis of this "memristive" device, based on
a combination of ab-initio calculations of the electronic structures of the
molecules and the general theory of single-electron tunneling in systems with
discrete energy spectra. Our results show that such molecular assemblies, with
a length below 10 nm and a footprint area of about 5 nm$^2$, may combine
sub-second switching times with multi-year retention times and high ($> 10^3$)
ON/OFF current ratios, at room temperature. Moreover, Monte Carlo simulations
of self-assembled monolayers (SAM) based on such molecular assemblies have
shown that such monolayers may also be used as resistive switches, with
comparable characteristics and, in addition, be highly tolerant to defects and
stray offset charges.
