A molecular scale full adder based on controlled intramolecular electron and energy transfer

We show that the donor part of a bichromophore molecule can communicate its logic output as input to the acceptor part of the bichromophoric molecule. Such transfer is achieved through electronic energy transfer between the chromophores. We discuss a specific pair, the rhodamine 6G-azulene, for which there is considerable data, but the scheme is general enough to allow a wide choice of D-A pairs. We present preliminary results pertaining to a newly synthesized bichromophoric molecule based on this pair, in which a full adder is implemented, utilizing intramolecular electronic energy transfer between the two moieties.