Multifunctional Photonic Molecular Logic Gate Based On A Biphotochromic Dyad With Reduced Energy Transfer

Abstract

Using molecular logic gates (MLGs) for information processing attracts attention due to perspectives of creating molecular computers. Biphotochromic dyads are suitable models of photonic MLGs. However, they suffer from one weakness: the activity of one of the photochromes is often quenched because of Förster resonance energy transfer (FRET). Herein, we designed a dyad with reduced FRET, in which both photochromes keep their photoactivity thanks to spectral and spatial separation, allowing MLG switching between different states. This novel dyad reproduces the functionality of the full set of 16 two-input gates, as well a reversible gate-dual inverter, all gates are photonic.

Emission modulation of fluorescent turn-on mode dibenzothienyl sulfonyl ethene photoswitches embedded in a polymer film

“…11 A later approach exploited photochromism for controlling energy and charge transfer efficiencies between organic molecules for signal transduction by combining the properties of photons and excitons. 12–16 Although highly interesting, none of these initiatives allowed for full optical control of all steps.…”

New bis‐photochromic compounds based on diarylimidazoles: Synthesis and multistimuli‐responsive optical properties

“…For example, the prerequisite of a full‐photon molecular logic gate would be a sequential change in electronic properties. [ 23–28 ] To date, the diarylethene system has been reported as a typical bis‐photochromic system. [ 29–31 ] These photochromic compounds can be used as useful switches for fluorescence emission, which is considered to be a promising signal transduction mode.…”

Visible-light-driven two-way photoisomerization of 1-(1-pyrenyl)-2-(2-quinolyl)ethylene in neutral and protonated forms

“…[3][4][5][6] For example, by photoisomerization of different diarylethylenes (DAEs), it is possible to perform the functions of different molecular logic gates. 7,8 A molecular photonic switch is defined as a compound that can reversibly transform between two (or more) states under light irradiation. There are two main parameters that characterize the photochemical properties of a photonic switch: the region of spectral sensitivity and the photoisomerization quantum yield.…”