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Ace Naphthene as a primary material was nitrated and further reacted by various unit processes such as oxidation, imidation and amination in order to obtain dyad 5. The Dyad 5 fluorescence in solvents of different polarity is shifted bathochromically with increasing the solvent polarity due to ICT enhancement, fluorescent enhancement is greatest in case of chloroform (ФF = 0.48) Excitation at 420 nm ,The influences of the pH on dyad 5 were also investigated, the results can be considered as representing off-on-off states. dyad 5 executes two input XNOR logic gates, the dyad 5 shows optical sensing towards H+ and HO− ions, it was investigated the “off-on-off” switching behavior of the receptor between H+ and HO− ions, the synthesized compounds were tested for antimicrobial activity of Gram-positive and Gram-negative bacteria, compounds were tested have a good antibacterial activity as compared with standard compound (Gentamycin).

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The synthesis, sensor activity, and logic behavior of a novel 4-iminoamido-1,8-naphthalimide bichromophoric system based on a “fluorophore-receptor” architecture with ICT chemosensing properties is reported. The synthesized compound showed good colorimetric and fluorescence signaling properties as a function of pH and proved itself as a promising probe for the rapid detection of pH in an aqueous solution and base vapors in a solid state. The novel dyad is able to work as a two-input logic gate with chemical inputs H+ (Input 1) and HO− (Input 2) executing INHIBIT logic gate. The synthesized bichromophoric system and the corresponding intermediates demonstrated good antibacterial activity toward Gram (+) and Gram (−) bacteria when compared with the Gentamycin standard.

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