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Functionalized Supramolecular Nanoporous Arrays for Surface Templating
Author(s) -
Perdigão Luís M. A.,
Saywell Alex,
Fontes Giselle N.,
Staniec Paul A.,
Goretzki Gudrun,
Phillips Anna G.,
Champness Neil R.,
Beton Peter H.
Publication year - 2008
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/chem.200800476
Subject(s) - scanning tunneling microscope , nanoporous , diimide , nanostructure , molecule , perylene , supramolecular chemistry , materials science , nanotechnology , melamine , chemistry , crystallography , organic chemistry
Controlled self‐assembly and chemical tailoring of bimolecular networks on surfaces is demonstrated using structural derivatives of 3,4:9,10‐perylenetetracarboxylic diimide (PTCDI) combined with melamine (1,3,5‐triazine‐2,4,6‐triamine). Two functionalised PTCDI derivatives have been synthesised, Br 2 –PTCDI and di(propylthio)–PTCDI, through attachment of chemical side groups to the perylene core. Self‐assembled structures formed by these molecules on a Ag–Si(111) ${\sqrt{3}}$ × ${\sqrt{3}}$ R 30° surface were studied with a room‐temperature scanning tunneling microscope under ultrahigh vacuum conditions. It is shown that the introduction of side groups can have a significant effect upon both the structures formed, notably in the case of di(propylthio)–PTCDI which forms a previously unreported unimolecular hexagonal arrangement, and their entrapment behaviour. These results demonstrate a new route of functionalisation for network pores, opening up the possibility of designing nanostructured surface structures with chemical selectivity and applications in nanostructure templating.