Artificial chemical systems capable of mimicking some elementary properties of neurons

Fernando Pina, Maria João Melo, Mauro Maestri, Paolo Passaniti, Vincenzo Balzani

Research output: Contribution to journalArticle

168 Citations (Scopus)

Abstract

We describe the photochemical behavior of aqueous solutions containing the Co(CN)63- complex ion and the trans-chalcone form Ct of the 4'- methoxyflavylium ion (AH+). It is shown that, under the experimental conditions used, the photochemical reaction leading from Ct to AH+ shows an off-on-off behavior upon excitation with a continuous light source or with successive light flashes. The described systems perform as threshold devices and as XOR (eXclusive OR) logic gates. They behave as rudimental artificial neuron-like systems in the sense that their outputs (formation of the AH+ species, with a consequent change in the spectroscopic properties) are the result of an elaboration of two distinct (light) inputs by chemical reactions in solution.

Original languageEnglish
Pages (from-to)4496-4498
Number of pages3
JournalJournal of the American Chemical Society
Volume122
Issue number18
DOIs
Publication statusPublished - 10 May 2000

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