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 Δ2-pyrazoline on its own and when grafted onto silica microparticles. Related Δ2-pyrazolines become proton-driven YES gates the basis of photoinduced electron transfer (PET) switches. Additional PASS 1 YES+PASS are also within same family. Beside these small-molecule systems, polymeric molecular thermometer based benzofurazan-derivatized N-isopropylacrylamide copolymer attached to produce temperature-driven logic.