and a tetrathiafulvalene redox donor. These groups, when attached to anthracene, can simultaneously process information concerning the concentration of the acid and oxidizing ability of the solution.

OR molecular logic gate

De Silva et al. constructed an OR molecular logic gate using an aza-crown ether receptor and sodium and potassium ions as the inputs. Either of the two ions could bind to the crown ether, causing the PET to be quenched and the fluorescence to be turned on. Since either

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