title: Molecular logic: a half-subtractor based on tetraphenylporphyrin.
abstract: Spectroscopic changes from a solution of the amphophile 5,10,15,20-tetraphenylporphyrin in N,N-dimethylformamide using inputs of acid (HClaq) and base (KOBut) are interpreted as XOR and INHIBIT logic operations. The combination of these two operations gives rise to a device that acts as a molecular half-subtractor.
authors.affiliation: School of Chemistry, Monash University, Victoria, Australia. s.langford@sci.monash.edu.au
authors.forename: Steven J
authors.initials: SJ
authors.lastname: Langford
authors.forename: Trevor
authors.initials: T
authors.lastname: Yann