Concept to the Protoelectric Potential Map PPM

By using the unifying reference states proton gas (1 bar => pHabs) and electron gas (1 bar => peabs), the thermo­dy­na­mic relations of any reaction with trans­fer of protons and / or electrons in any medium (gas or condensed pha­ses) may be compared, best on the protoelectric potential map PPM. It is a 2D plot of pHabs vs. peabs, i.e. a unified solvent-independent window. The definitions of pHabs and peabs are based on the chemical potentials of the proton and electron, as well as their conversion into the conventional scales as defined by Sørensen. Eabs  is the absolute electrode potential ET as identified by Trasatti. The useful  pHabs,water-value is the con­ti­nu­a­tion of the aqueous pH scale to non-aqueous media and connected to the Eabs,water- and peabs,water-values.

First Publication: Chem. Eur. J. 2014, 20, 4194-4211 (VIP-Paper).

Review Perspective: Angew. Chem., Int. Ed. 2018, 57, 4386-4411. This review aims at explaining the concept.

Video Tutorials: In the section 'Video Tutorials' of this Website you will find a series of videos explaining the concept. So go ahead and use it...! There are myriads of possible applications.