Assorted designing of molecular logic gates and memory latch functionality descended from copper Ions-Triggered optical responses

Abstract

The present letter showcases the designing of versatile inter-convertible logic circuits and molecular memory latch by exploiting the optical responses of a chromogenic probe (1) in a context-dependent manner. Different combinations of ionic and non-ionic analytes in specific ratios have been used as inputs, whereas the changes in absorption signals of 1 at different wavelengths have been considered as outputs. For instance, the changes in UV–visible spectra of 1 have been considered during interaction with specific analytes, such as Cu(I) and Cu(II) ions in anionic micelle medium. In addition, binding of 1 with Cu(I) or Cu(II) ions in the presence of suitable chelating ligands [ethylenediamine, neucouprine] or redox-reagents [H2O2, GSH] have also been scrutinized for the construction of diverse logic circuits. Beyond trivial logic gates (NOR, OR, AND, NAND), we have designed a series of non-trivial (IMPLICATION, INHIBIT, TRANSFER, NOT-TRANSFER) logic circuits. Additionally, we also designed dual-input PASS 1 and PASS 0 logic circuits with the specific sets in opto-chemical inputs and outputs. Here it's fascinating how easily optical toggling allows us to change the type of logic sense. Additionally, for the first time we are reporting here a dual-input-dual-output buffer logic gate. At long last, with Cu(I) and H2O2 we designed a rarest of molecular JK latch functionality.