All-Photonic Molecular Half-Adder

JOAKIM ANDREASSON, STEPHEN D. STRAIGHT, GERDENIS KODIS, CHOONG-DO PARK, MICHAEL HAMBOURGER, MIGUEL GERVALDO, BO ALBINSSON, THOMAS A. MOORE, ANA L. MOORE, AND DEVENS GUST.

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY

American Chemical Society

Lugar: Columbus, OH, USA.; Año: 2006 vol. 128 p. 16259 - 16265

0002-7863

One molecule acts as both an AND and an XOR Boolean logic gate that share the same two photonic inputs. The molecule comprises a half-adder, adding two binary digits with only light as inputs and outputs, and consists of three covalently linked photochromic moieties, a spiropyran and two quinolinederived dihydroindolizines. The AND function is based on the absorption properties of the molecule, whereas the XOR function is based on an off-on-off response of the fluorescence to the inputs that results from interchromophore excited-state quenching interactions. The half-adder is simple to operate and can be cycled many times.