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Dr. Valentin Radtke

Dr. Valentin Radtke

Room No.: 333 (Chemie II)/R03060 (FMF)

Telephone: +49 761 203-6148/4782

e-mail: valentin.radtke@ac.uni-freiburg.de

 

Keywords: Electrochemistry, protoelectric potential map (PPM),

unified acidity, unified reducity, liquid junction potential

 

With the project UniChem funded by the European Research Council (ERC) the foundation stone was laid for the Protoelectric Potential Map (PPM) which is the two dimensional plot of the unified pH value pHabs and the unified redox potential (reducity) peabs. Both measures are defined by the absolute chemical potential of the proton and the electron, respectively. Therefore, the PPM is the first thermodynamically consistent scale for pH­abs and peabs. The PPM enables the straightforward comparability of the thermochemistry of any redox, acid-base or combined system in any medium to any other.
The practical implementation, i.e. measurements of pHabs and peabs, currently is elaborated in the UnipHied project, which is funded from the EMPIR programme (project 17FUN09) co-financed by the participating states and from the European Union's Horizon 2020 research and innovation programme.
 
Involved in this project are the current members Dr. Daniel Himmel, Denis Priester, Monika Bäuerle and Niklas Gebel.
 
 
Visit the PPM website for further information and to calculate pHabs values and (soon) peabs values for your own applications:
http://www.ppm.uni-freiburg.de/
 
 
vradtke_figure1Advanced Grant “UniChem”, No. 291383
 
uniphied     emprir.jpg
 
  1. V. Radtke, D. Himmel, K. Pütz, S. Goll, I. Krossing: The Protoelectric Potential Map (PPM): An Absolute Two-Dimensional Chemical Potential Scale for a Global Understanding of Chemistry. Chem. Eur. J., 2014, 20, 9194 – 4211, DOI: 10.1002/chem.201302473
  2. V. Radtke, A. Ermantraut, D. Himmel, T. Koslowski, I. Leito, I. Krossing: The Ideal Ionic Liquid Salt Bridge for the Direct Determination of Gibbs Energies of Transfer of Single Ions, Part I: The Concept.  Angew. Chem. Int. Ed., 2018, 57, 2344 – 2347, DOI: 10.1002/anie.201707333
  3. A. Ermantraut, V. Radtke, N. Gebel, D. Himmel, T. Koslowski, I. Leito, I. Krossing: The Ideal Ionic Liquid Salt Bridge for the Direct Determination of Gibbs Energies of Transfer of Single Ions, Part II: Evaluation of the Role of Ion Solvation and Ion Mobilities.  Angew. Chem. Int. Ed., 2018, 57, 2344 – 2347, DOI: 10.1002/anie.201707334
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