title: Seeded on-surface supramolecular growth for  large area conductive donor-acceptor assembly.
abstract: Charge transport features of organic semiconductor assemblies are of paramount importance. However, large-area extended supramolecular structures of donor-acceptor combinations with controlled self-assembly pathways are hardly accessible. In this context, as a representative example, seeded on-surface supramolecular growth of tetrathiafulvalene and tetracyano-p-quinodimethane (TTF-TCNQ) using active termini of solution-formed sheaves has been introduced to form an extended assembly. We demonstrate for the first time, the creation of a large-area donor-acceptor assembly on the surface, which is practically very tedious, using a seeded, evaporation-assisted growth process. The excellent molecular ordering in this assembly is substantiated by its good electrical conductivity (~10⁻² S cm⁻¹). The on-surface assembly via both internally formed and externally added sheaf-like seeds open new pathways in supramolecular chemistry and device applications.
authors.lastname: Goudappagouda
authors.forename: Sundaresan
authors.initials: S
authors.lastname: Chithiravel
authors.forename: Kothandam
authors.initials: K
authors.lastname: Krishnamoorthy
authors.forename: Suresh W
authors.initials: SW
authors.lastname: Gosavi
authors.forename: Sukumaran Santhosh
authors.initials: SS
authors.lastname: Babu