Molecular trafficking based on latch circuit

Abstract

A new fluorescent chemosensor 3 based on calix[4]arene of partial cone conformation possessing dansyl moieties has been synthesized. The chemosensor demonstrates selective optical recognition of Hg²⁺ ions in mixed aqueous media and mimics the operation of a traffic signal based on the R–S Latch Logic circuit with pH, Hg²⁺ and Cl⁻/Br⁻/I⁻ as chemical inputs.