Multiport logic operations triggered by protonation-a trisphenanthroline as a 3-input AND-NOR-OR circuit

A linear bisphenanthroline (two binding sites) is set up to operate as a XNOR gate and a linear trisphenanthroline (three binding sites) as a molecular 3-input AND-NOR-OR logic circuit, both with H+ as input signal and luminescence as output signal.