Ratiometry of monomer/excimer emissions of dipyrenyl thiacalix[4]arene for Cu2+ detection: a potential Cu2+ and K+ switched INHIBIT logic gate with NOT and YES logic functions

A new thiacalix[4]arene derivative of 1,3-alternate conformation possessing two pyrene moieties has been synthesized and its ability to recognize cations and to form logic gates has been examined.