Figure 2: Chemical structures of the foldamers.
From: High conductance values in π-folded molecular junctions

Structures of the complete -NHBoc and -NH2 foldamer series studied in this work: dimer-NHBoc, dimer-NH2, trimer-NHBoc, trimer-NH2, tetramer-NHBoc, tetramer-NH2, pentamer-NHBoc, and pentamer-NH2. Arrows indicate the transformation of the -NHBoc series into the -NH2 series.