Artificial chemical systems capable of mimicking some elementary properties of neurons

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

doi:10.1021/ja000190d

Artificial chemical systems capable of mimicking some elementary properties of neurons

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

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122 Citations (Scopus)

Abstract

We describe the photochemical behavior of aqueous solutions containing the Co(CN)₆^3- 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 language	English
Pages (from-to)	4496-4498
Number of pages	3
Journal	Journal of the American Chemical Society
Volume	122
Issue number	18
DOIs	https://doi.org/10.1021/ja000190d
Publication status	Published - 10 May 2000

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AU - Pina, Fernando

AU - Melo, Maria João

AU - Maestri, Mauro

AU - Passaniti, Paolo

AU - Balzani, Vincenzo

PY - 2000/5/10

Y1 - 2000/5/10

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AB - 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.

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Artificial chemical systems capable of mimicking some elementary properties of neurons

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