An all-photonic molecular keypad lock

Joakim Andréasson, Stephen D. Straight, Thomas Moore, Ana Moore, Devens Gust

Research output: Contribution to journalArticlepeer-review

120 Scopus citations


An all photonic molecular keypad lock with a reset capacity, that is capable of distinguishing one two-digit code out of eight possible combinations were described. The synthesis and characterization of triad 1 with distilled 2-methyltetrahydrofuran as the solvent for spectroscopic measurement were reported, where the samples were degassed by size freeze-pump-thaw cycles to a final pressure. The functional principle of a keypad lock is that it gives an output signal only when given the correct inputs in the correct order, also the capacity of the triad to perform as a two-input PAND gate with reset capacity are considered. The keypad lock is found to be operated by five optical signals in the UV region including fluorescence emission that signals the actual opening of the lock, which can also be used numerous times without ant photodegradation affecting the performance.

Original languageEnglish (US)
Pages (from-to)3936-3939
Number of pages4
JournalChemistry - A European Journal
Issue number16
StatePublished - Apr 14 2009


  • Chromophores
  • Molecular devices photochemistry
  • Photochromism
  • Porphyrinoids

ASJC Scopus subject areas

  • Catalysis
  • Organic Chemistry


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