Structure and energetics of diphenylalanine self-assembling on Cu(110).

摘要: We investigate the dynamical features of adsorption diphenylalanine molecules on Cu(110) surface and their assembling into supramolecular structures by a combination quantum classical atomistic modeling with dynamic scanning tunneling microscopy spectroscopic experiments. Our results reveal self-assembling mechanism in which isolated adsorbed change conformation mode as consequence mutual interactions. In particular, formation zwitterions after proton transfer between initially neutral is found to be key event process, stabilizes structures. Because constraints intermolecular bonds exerted surface-molecule interactions, assembly process strictly stereoselective, may suggest general model for patterning functionalization bare metal surfaces short chiral peptides.