The macroscopic and the nanoscopic DC electrical current through Langmuir-Blodgett (LB) multilayers, and even through a monolayer of gamma-(n-hexadecyl)quinolinium tricyanoquinodimethanide, C(16)H(33)Q-3CNQ (1) is asymmetric with voltage, and has a large component due to a transition from the ground-state zwitterion to a probably neutral excited-state conformer: the molecule is indubitably a rectifier of electrical current.