Fluorescent Molecular Logic Gates Driven by Temperature and by Protons in Solution and on Solid

Temperature-driven fluorescent NOT logic is demonstrated by exploiting predissociation in a 1,3,5-trisubstituted Delta(2)-pyrazoline on its own and when grafted onto silica microparticles. Related Delta(2)-pyrazolines become proton-driven YES and NOT logic gates on the basis of fluorescent photoinduced electron transfer (PET) switches. Additional PASS 1 and YES+PASS 1 logic gates on silica are also demonstrated within the same family. Beside these small-molecule systems, a polymeric molecular thermometer based on a benzofurazan-derivatized N-isopropylacrylamide copolymer is attached to silica to produce temperature-driven fluorescent YES logic.

Automated summary

Temperature-driven fluorescent NOT logic and proton-driven YES and NOT logic gates are demonstrated using different compounds and materials, along with additional logic gates. A polymeric molecular thermometer based on a copolymer is also showcased in the study.