Poul Erik Hansen, professor emeritus, Dr. Science., Roskilde University, Science and Environment, Faculty Member.
Research interests: Studies of isotope effects on chemical shifts in intramolecular hydrogen bonded compounds with low barriers to hydrogen transfer; NMR structural studies of proteins and biomolecules in general, structure-function relationships. NMR studies in environmental chemistry and biology. Studies of tautomerism. Friedel-Crafts acylations. Isolation, characterization and synthesis of new natural products. Compound classes of particular interest, proteins, Schiff bases, b-thioxoketones and b-diketones, ionic liquids.

Scientific career
(1970) Thesis, University of Århus: “Preparation of crowded PAH and investigation thereof by means of NMR, IR, UV and MS spectroscopy.”
(1971-1973) Research Fellow, Danish Natural Science Research Council
(1973-1974) Royal Society Exchange Fellow
(1974) Ph. D. Thesis:”¹³C, ¹⁹F and ¹H NMR studies of some polycyclic aromatic hydrocarbons. Synthesis of ¹³C enriched compounds.”
(1976-1977) Visit at Department of Biochemistry, University of Alberta, Edmonton, Canada, Prof. B.D.Sykes.(1977) Award from the Ole Rømer Foundation in recognition of contribution to the development of ¹³C NMR spectroscopy.
(1979) Associate professor of chemistry
(1988-89) Visiting professor Department of Biochemistry, Uni. New south Wales
(1988-95) Chairman, Danish Society for Molecular Spectroscopy
(1992) Visiting professor, Department of Biochemistry, Sydney University, Sydney, Australia
(1995-98) President of the Danish Chemical Society
(1996) Full professor in Bio-organic Nuclear Magnetic Resonance Spectroscopy, Department of Life Sciences and Chemistry, Roskilde University
(1997) Dr. Science , Roskilde University
(1997) Member of the Danish Academy for Natural Science
(1997) Member of International Advisory Board for Horizons H-bond meetings. 
(2003-6) President International Board for Horizons H-bond Research
(2014) Honorary member of the Polish Chemical Society
(2015) Guest professor University of Copenhagen
(2018) Knight of Dannebrog ,1st
(2018) Campaign Medal National Science University, Ho Chi Minh City, Vietnam

Published 300 scientific papers.  H-index 49