Philipp Stößel

Chemistry is my passion. It all started when I dissolved a piece of copper tubing in acetic essence in my mother´s kitchen.


Perspective

Chemistry is my passion. It all started when I dissolved a piece of copper tubing in acetic essence in my mother´s kitchen. Guess what, she was not amused but the resulting deep green sparkling crystals were worth it. Times have changed, today my ideas are first studied by my theoretician colleagues who use "in silico" quantum chemical methods and molecular dynamic simulations. The next step is the molecular synthesis which is carried out by preparative chemists like myself and their lab teams. Finally, our Physics and Application department tests the materials in an OLED device for their ability to transform electricity into light. Working on complex topics in a highly competitive field as a member of a focused team with diverse expertise is a challenging experience. Together we struggle for perfection driven by those rare moments when OLED mysteries get unravelled. For me understanding and learning bit by bit and driving things ahead along the lines of our thoughts and hypothesis is the biggest fulfillment. I cannot anticipate when an interesting thought comes to my mind. Most often it´s not at work but while doing something different like cooking, hiking or climbing. Yes, I know, in the end it´s all about making money. But the nice thing for me at Merck KGaA, Darmstadt, Germany is the freedom to try out new things, many of which don’t work out in the end. I like the positive failure culture which in the long run fosters a deeper understanding of things and creates true and sustainable value for our customers. I came to our company in a roundabout way. After receiving my PhD in 1996 I applied for a position at Merck KGaA, Darmstadt, Germany but my application got rejected. Back then I had an option of getting a good job with a big German software company but I decided to pursue my passion for chemistry and applied for a postdoc fellowship at the Alexander von Humboldt Foundation – which I luckily received. After my postdoc I joined a small OLED startup, Covion, which was acquired by Merck KGaA, Darmstadt, Germany a few years later. Looking back, I realize that following my passion for chemistry was one of the best decisions I have made so far. Just like research lines, careers cannot be master planned – surprises are still the impulse for change.

Chemistry is my passion. It all started when I dissolved a piece of copper tubing in acetic essence in my mother´s kitchen. Guess what, she was not amused...

Philipp Stößel

Senior Scientist

Profile

Joined Merck KGaA, Darmstadt, Germany: 2005

Key research fields and topics:

  • Synthetic Organic and Organometallic Chemistry
  • Luminescent Materials
  • Tiplet Dopants

Prizes and awards:

  • Doktoranden-Förderpreis der WE-Heraeus-Stiftung, 1996
  • Feodor-Lynen-Fellowship, Alexander von Humboldt-Stiftung,1996 - 1998
  • Avecia CEO´s Innovation Award, 2002

CV & Scientific activities

CV

CV

1986 - 1994
Graduate & Undergraduate Education
University of Tübingen, Germany
1992 – 1993
Independent Research Project
Prof. G. Gauglitz, University of Tübingen, Germany “Development of a spectroscopic method for the quantification of photochromic systems”
Research fields: Photochemistry / spectroscopy / kinetics
1993 – 1994
Research Assistant (Diploma in Chemistry)
Prof. H. A. Mayer, University of Tübingen, Germany
“A new, functionalized, tripodal phosphine ligand and its co-ordination chemical behavior towards molybdenum and iridium”
Research fields: Synthetic organic, organometallic and co-ordination chemistry / spectroscopy
1994 – 1996
Research Assistant (PhD in Chemistry)
Prof. H. A. Mayer, University of Tübingen, Germany
“Synthesis of functionalized tripodal phosphine ligands in order to control the properties of Metalla-Triphospha-Adamantanes”
Research fields: Synthetic organic, organometallic and co-ordination chemistry / spectroscopy / catalysis
1996 – 1998
Invited Researcher (Feodor-Lynen Postdoctoral fellow)
Prof. J. R. Norton, Colorado State University, Fort Collins, CO and Columbia University, New York, NY, USA
Research fields: Kinetics of the protonation reactions of rhenium - oxo species / synthesis of tetracarbonyl diosma cyclobutene - a vibrational model of chemisorbed ethyne / NMR-spectroscopic studies on the substrate binding on the enzyme methane monoxygenase
1998 – 1999
Research Chemist
Institute for New Materials, Saarbrücken, Germany
Research fields: Research and development on Sol-Gel materials
1999 – 2005
Research Chemist
Covion Organic Semiconductors GmbH, Frankfurt, Germany
Research fields: Basic research and development work on hole and electron transport materials, on spiro-bifluorene based materials, on blue singlet hosts and dopants and on triplet dopants
2005 – 2007
Research Chemist
Merck KGaA, Darmstadt, Germany, Frankfurt, OLED Materials GmbH
Research fields: Basic research and development on OLED triplet technology, especially on triplet dopants
2007 – today
Senior Scientist
Merck KGaA, Darmstadt, Germany, Frankfurt
Research fields: Basic research and development on OLED triplet technology, especially on triplet dopants

References

Publications and Lectures

  1. Photokinetic examination of (Z,E,E)-4,4´-distyrylazobenzol
    Günther Gauglitz, Philipp Stoessel, Herbert Meier, Hermann Rau, J. Photochem. Photobiol., A: Chemistry 1995, 85(3), 207-211.
  2. Synthesis and x-ray structure of cis,cis-1,3,5-(Trisdiphenylphosphino)-1,3,5-tris(methoxycarbonyl)cyclohexane
    Hermann A. Mayer, Philipp Stoessel, Riad Fawzi, Manfred Steimann, J. Organomet. Chem. 1995, 492(1), C1-C3.
  3. Synthesis and complexation behavior of the functionalized tripodal phosphine cis,cis-1,3,5-Tris(cyano)-1,3,5-tris(diphenylphosphin) cyclohexane (tdppcycn)
    Hermann A. Mayer, Philipp Stoessel, Riad Fawzi, Manfred Steimann, Chem. Ber. 1995, 128(7), 719-723.
  4. Synthesis of solid supported tripodal ligand systems
    Philipp Stoessel, Lecture at the Jahrestagung der Forschergruppe “Chemie in Interphasen”, Tübingen.
  5. Stereochemical and Electronic Control of Functionalized Tripodal Phosphines of the Adamantane-Type Ir(tripod)(CO)Cl (tripod = cis,cis-1,3,5-(PPh2)3-1,3,5-X3C6H6; X = H, COOMe, CN) - Complexes toward H+, H2, CO and C2H4
    Philipp Stoessel, Wolfgang Heins, Hermann A. Mayer, Riad Fawzi, Manfred Steimann, Organometallics 1996, 15(15), 3393-3403.
  6. The Mo(CO)3 Fragment as an Organometallic Protection Group in the Synthesis of Functionalized Tripodal Phosphine Ligands
    Philipp Stoessel, Hermann A. Mayer, Caecilia Maichele-Moessmer, Riad Fawzi, Manfred Steimann, Inorg. Chem. 1996, 35(20), 5860-5867.
  7. The Mo(CO)3 Fragment as an organometallic Protection Group in the synthesis of functionalized Tripodal Phosphine Ligands
    Philipp Stoessel, Lecture at the Seminary of Inorganic Chemistry, Colorado-State-University, Fort Collins, CO, USA.
  8. Synthesis of immobilizable and water-soluble tripodal phosphine ligands supported by organometallic protection groups
    Hermann A. Mayer, Philipp Stoessel, GIT Labor-Fachzeitschrift 1997, 41(8), 820-821.
  9. NMR Studies of the Interaction of Methane with the MMO Hydroxylase
    Philipp Stoessel, Lecture at the Methane Monoxygenase Symposium, MIT, Boston, MA, USA.
  10. Water-soluble tripodal phosphine ligands and their rhodium complexes
    Philipp Stoessel, Hermann A. Mayer, Friedrich Auer, Europ. J. Inorg. Chem. 1998, 1, 37-41.
  11. Control of the basicity of the Ir(tdppcymome)(CO)Cl complex with methoxymethyl functional groups at the ligand backbone [tdppcymome = cis,cis-1,3,5-(PPh2)3-1,3,5-(CH2OCH3)3-C6H6]
    Philipp Stoessel, Wolfgang Heins, Hermann A Mayer, Wolfgang Horner, Teja S. Ertel, Helmut Bertagnolli, J. Organomet. Chem., 1998, 552(1-2), 229-236.
  12. Synthesis and characterization of Ni-, Pd- and Pt-complexes of functionalized, tripodal phosphine complexes
    Wolfgang Heins, Philipp Stoessel, Riad Fawzi, Manfred Steimann, J. Organomet. Chem., 1999, 587(2), 258-266.
  13. Binding and Activation of Dioxygen at binuclear Iron Complexes
    Philipp Stoessel, Lecture at the Sonderforschungsbereich 436, University of Jena, Germany.
  14. Blue temperature stable and efficient OLEDs using amorphous spiro compounds
    Philipp Stoessel, International conference on synthetic metals - ISCM, Bad Gastein, Austria.
  15. Rhenium Oxo Complexes of a Chelating Diyne Ligand. Synthesis and Study of the Kinetics of Protonation
    Yi Han, Jeff C. Harlan, Philipp Stoessel, Brian Frost, Jack R. Norton, Susie Miller, Brian Bridgewater, Qiang Xu, Inorg. Chem. 2001, 40(13), 2942-2952.
  16. White and blue temperature stable and efficient OLEDs using amorphous spiro transport and spiro emitting compounds.
    Hubert Spreitzer, Horst Vestweber, Philipp Stoessel, Heinrich Becker, Proceedings of the SPIE – The International Society for Optical Engineering 2001, 4105 (Organic Light-Emitting Materials and Devices IV) 125-133.
  17. Developments in polymer materials for electroluminescence
    Heinrich Becker, Horst Vestweber, Arne Buesing, Aurelie Falcou, Susanne Heun, Edgar Kluge, Amir Parham, Philipp Stoessel, Hubert Spreitzer, Kevin Treacher, Proceedings of the SPIE – The International Society for Optical Engeneering 2002, 4464 (Organic Light-Emitting Materials and Devices V) 49-58.
  18. Light emitting polymer materials for full-color displays
    Hubert Spreitzer, Heinrich Becker, Esther Breuning, Aurelie Falco, Kevin Treacher, Arne Buesing, Amir Parham, Philipp Stoessel, Susanne Heun, Juergen Steiger, Proceedings of the SPIE – The International Society for Optical Engineering 2003, 4800 (Organic Light-Emitting Materials and Devices VI) 16-25.
  19. Light emitting polymer materials: The working base for flexible full color displays
    Heinrich Becker, Esther Breuning, Arne Buesing, Aurelie Falco, Susanne Heun, Amir Parham, Hubert Spreitzer, Juergen Steiger, Philipp Stoessel, Material Research Society Symposium Proceedings 2003, 769, 3-14.
  20. A vibrational study of the diosmacyclobutene complex Os2(CO)8(µ2-1,1-C2H2): the use of organometallic complexes as vibrational models for chemisorbed ethyne
    Christopher E. Anson, Norman Sheppard, Ryan Pearman, John R. Moss, Philipp Stoessel, Sandra Koch, Jack R. Norton, Phys. Chem. Chem. Phys. 2004, 6(5), 1070-1076.
  21. Carbazole Compounds as Host Materials for Triplet Emitters in Organic Light-Emitting Diodes: Polymer Host for High-Efficiency Light-Emitting Diodes
    Addy van Dijken, Jolanda J. A. M. Bastiaansen, Nicole M. M. Kiggen, Bea M. W. Langeveld, Carsten Rothe, Andy Monkman, Ingrid Bach, Philipp Stoessel, Klemens Brunner, J. Am. Chem. Soc. 2004, 126(24), 7718-7727.
  22. Deep blue widely tunable organic solid-state laser based on a spiro-bifluorene derivative
    Daniel Schneider, Torsten Rabe, Thomas Riedl, Thomas Dobbertin, Olaf Werner, Michael Kroger, Eike Becker, Hans-Hermann Johannes, Wolfgang Kowalsky, Thomas Weimann, Jing Wang, Peter Hinze, Anja Gerhard, Philipp Stoessel, Horst Vestweber, App. Phys. Lett. 2004, 84(23), 4693-4695.
  23. Emission and absorption of Ir(ppy)2(CO)Cl – temperature dependence, phosphorescence decay dynamics, and assignment of excited states
    Walter J. Finkenzeller, Philipp Stoessel, Hartmut Yersin, Chem. Phys. Lett. 2004, 397(4-6), 289-295.
  24. Late-news paper: novel host materials for efficient and stable phosphorescent OLED devices
    Heinrich Becker, Horst Vestweber, Anja Gerhard, Philipp Stoessel, Rocco Fortte, Digest of Technical Papers – Society for Information Displays International Symposium 2004, 35, 796-799.
  25. Highly efficient deep-blue organic light-emitting diodes with doped transport layers
    Desta Gebryehu, Karsten Walzer, Gufeng He, Martin Peiffer, Karl Leo, Julia Brandt, Anja Gerhard, Philipp Stoessel, Horst Vestweber, Synth. Met. 2005, 148(2), 205-211.
  26. An ultraviolet organic thin-film solid-state laser for biomarker applications
    Daniel Schneider, Torsten Rabe, Thomas Riel, Thomas Dobberetin, Michael Kroeger, Eike Becker, Hans-Hermann Johannes, Wolfgang Kowalsky, Thomas Weimann, Jing Wang, Peter Hinze, Anjs Gerhard, Philipp Stoessel, Horst Vestweber, Advanced Mat. 2005 17(1), 31-34.
  27. Crystal Structure of fac-Ir(ppy)3 and Emission Properties under Ambient Condition and at High Pressure
    Josef Breu, Philipp Stoessel, Sigurd Schrader, Alexander Starukhin, Walter J. Finkenzeller, Hartmut Yersin, Chem. Mat. 2005, 17(7), 1745-1752.
  28. Green light-emitting solid-state electrochemical cell obtained from a homoleptic iridium(III)complex containing ionically charged ligands
    Henk J. Bolink, Luca Cappelli, Eugenio Coronado, Amir Parham, Philipp Stoessel, Chem. Mat. 2006, 18(12), 2778-2780.
  29. Rapid combinatorial synthesis and chromatography based screening of phosphorescent iridium complexes for solution processing
    Andreas Hohenleuther, Susanna Schmidbauer, Rudolf Vasold, Dominik Joosten, Philipp Stoessel, Herwig Buchholz, Burkhard Koenig, Adv. Funct. Mater. 2012, 22(16), 3406.

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