Construction of oriented π-electron arrays based on two-dimensional supramolecular organizates

Two-dimensional supramolecular organizates are shown to be powerful tools for constructing oriented π-electron arrays, which are applicable to molecular photonics devices and artificial photosynthesis. Complementary hydrogen bonding at the interface of an amphiphilic nucleobase monolayer can form two-dimensional stacking of base-pairs, which is expected to be an electron medium for photoinduced electron transfer as well as double-strand DNAs. DNAs are also immobilized as a monomolecular film of the polyion-complex with an amphiphilic cationic intercalator. A new type of monolayer-forming stilbene amphiphile having a trinitrofluorenylidene group is prepared for designing spatially separated electron donor and acceptor layers.