All-photonic molecular half-adder

Joakim Andréasson, Stephen D. Straight, Gerdenis Kodis, Choong Do Park, Michael Hambourger, Miguel Gervaldo, Bo Albinsson, Thomas Moore, Ana Moore, Devens Gust

Research output: Contribution to journalArticlepeer-review

133 Scopus citations


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 quinoline-derived 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.

Original languageEnglish (US)
Pages (from-to)16259-16265
Number of pages7
JournalJournal of the American Chemical Society
Issue number50
StatePublished - Dec 20 2006

ASJC Scopus subject areas

  • Catalysis
  • Chemistry(all)
  • Biochemistry
  • Colloid and Surface Chemistry


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