  Choosing self-assembled monolayers (SAM) of fluorine terminated
oligophenylenes adsorbed on gold as illustration, we show that a single level
(molecular orbital, MO) model can excellently reproduce full I-V curves
measured for large area junctions fabricated with top EGaIn contact. In
addition, this model unravels a surprising dichotomy between MO coupling to
electrodes and the MO broadening. Importantly for the coherence of the
microscopic description, the latter is found to correlate with the SAM coverage
and molecular and pi* orbital tilt angles.
