Heterochiral Dimer Formation of α-<scp>l</scp>- and α-<scp>d</scp>-Polyalanine Molecules on Surfaces

The self-assembly process of racemic mixtures of right(L)- and left(D)-handed α-polyalanine molecules (DL-PA) with a length of 4 nm (27 alanine units) and a helix pitch of λ=0.54 nm on HOPG was inv...