Dr. Ralf Zimmermann

Dr. Ralf Zimmermann

Dr. Ralf Zimmermann
Biofunctional Polymer Materials
Tel. +49 (0)351 4658 258 / Fax +49 (0)351 4658 533
zimmermn@dont-want-spam.ipfdd.de

Personal data

  • 1998: diploma in Physical Engineering at the University of Applied Sciences Mittweida
  • 2004: PhD at the faculty of Electrical Engineering and Information Technology of the Technical University of Dresden
  • since 1998: research scientist at the Leibniz Institute of Polymer Research Dresden

Fields of work

  • charge formation processes at polymers in aqueous solutions
  • ion specific phenomena at solid/liquid interfaces
  • electrosurface phenomena at supported lipid bilayer membranes
  • theory of the charge formation at soft surfaces
  • ion and fluid transport at polymer interfaces
  • development of new analytical techniques for the characterisation of surface charge
  • combination of electrokinetic and spectroscopic methods
  • microfluidic

Publications

  1. Schulze, A.; Maitz, M.F.; Zimmermann, R.; Marquardt, B.; Fischer, M.; Werner, C.; Went, M.; Thomas, I.
    Permanent surface modification by electron-beam-induced grafting of hydrophilic polymers to PVDF membranes mehr
    Journal of Membrane Science 3 (2013) 22518-22526

  2. Zimmermann, R.; Dukhin, S. S.; Werner, C.; Duval, J. F. L.
    On the use of electrokinetics for unraveling charging and structure of soft planar polymer films mehr
    Current Opinion in Colloid and Interface Science 18 (2013) 83-92

  3. Zimmermann, R.; Bartsch, S.; Freudenberg, U.; Werner, C.
    Electrokinetic analysis to reveal composition and structure of biohybrid hydrogels mehr
    Analytical Chemistry 84 (2012) 9592-9595

  4. Warenda, M.; Richter, A.; Schmidt, D.; Janke, A.; Müller, M.; Simon, F.; Zimmermann, R.; Eichhorn, K.-J.; Voit, B.; Appelhans, D.
    Fabrication pH-stable and swellable very thin hyperbranched poly(ethylene imine)- oligosaccharide films fabricated without precoating: first view on protein adsorption mehr
    Macromolecular Rapid Communications 33 (2012) 1466-1473

  5. Zimmermann, R.; Küttner, D.; Renner, L.; Kaufmann, M.; Werner, C.
    Fluidity modulation of phospholipid bilayers by electrolyte ions: Insights from fluorescence microscopy and microslit electrokinetic experiments mehr
    Journal of Physical Chemistry / A: Molecules, spectroscopy, kinetics, environment & general theory 116 (2012) 6519–6525

  6. Dukhin, S. S.; Zimmermann, R.; Werner, C.
    Surface conductivity mehr
    in: Electrical phenomena at interfaces and biointerfaces : Fundamentals and applications in nano-, bio-, and environmental sciences, Ohshima, Hiroyuki, ed. (Wiley & Sons 2012) , 95-126

  7. Duval, J. F. L.; Küttner, D.; Werner, C.; Zimmermann, R.
    Electrohydrodynamics of soft polyelectrolyte multilayers: point of zero-streaming current mehr
    Langmuir 27 (2011) 10739-10752

  8. Duval, J. F. L.; Küttner, D.; Nitschke, M.; Werner, C.; Zimmermann, R.
    Interrelations between charging, structure and electrokinetics of nanometric polyelectrolyte films mehr
    Journal of Colloid and Interface Science 362 (2011) 439-449

  9. Pidhatika, B.; Möller, J.; Benetti, E. M.; Konradi, R.; Rakhmatullina, E.; Muehlebach, A.; Zimmermann, R.; Werner, C.; Vogel, V.; Textor, M.
    The role of the interplay between polymer architecture and bacterial surface properties on the microbial adhesion to polyoxazoline-based ultrathin films mehr
    Biomaterials 31 (2010) 9462-9472

  10. Zimmermann, R.; Kuckling, D.; Kaufmann, M.; Werner, C.; Duval, J. F. L.
    Electrokinetics of a poly(N-isopropylacrylamid-co-carboxyacrylamid) soft thin-film. Evidence of segment distribution in the swollen state mehr
    Langmuir 26 (2010) 18169-18181

  11. Richter, A.; Janke, A.; Zschoche, St.; Zimmermann, R.; Simon, F.; Eichhorn, K.-J.; Voit, B.; Appelhans, D.
    pH-stable hyperbranched poly(ethyleneimine)-maltose films for the interaction with phosphate containing drugs mehr
    New Journal of Chemistry 34 (2010) 2105-2108

  12. Dukhin, S. S.; Zimmermann, R.; Duval, J. F. L.; Werner, C.
    On the applicability of the Brinkman equation in soft surface electrokinetics mehr
    Journal of Colloid and Interface Science 350 (2010) 1-4

  13. Müller, Y.; Tot, I.; Potthast, A.; Rosenau, T.; Zimmermann, R.; Eichhorn, K.-J.; Nitschke, C.; Scherr, G.; Freudenberg, U.; Werner, C.
    The impact of esterification reactions on physical properties of cellulose thin films mehr
    Soft Matter 6 (2010) 3680-3684

  14. Lützenkirchen, J.; Zimmermann, R.; Preocanin, T.; Filby, A.; Kupcik, T.; Küttner, D.; Abdelmonem, A.; Schild, D.; Rabung, T.; Plaschke, M.; Brandenstein, F.; Werner, C.; Geckeis, H.
    The attempt to explain bimodal behaviour of the sapphire c-plane electrolyte interface mehr
    Advances in Colloid and Interfaces Science 157 (2010) 61-74

  15. Zimmermann, R.; Freudenberg, U.; Schweiß, R.; Küttner, D.; Werner, C.
    Hydroxide and hydronium ion adsorption - A survey mehr
    Current Opinion in Colloid and Interface Science 15 (2010) 196-202

  16. Duval, J. F. L.; Zimmermann, R.; Cordeiro, A. L.; Rein, N.; Werner, C.
    Electrokinetics of diffuse soft interfaces. IV. Anaylsis of streaming current measurements at thermoresponsive thin films mehr
    Langmuir 25 (2009) 10691-10703

  17. Zimmermann, R.; Rein, N.; Werner, C.
    Water ion adsorption dominates charging at nonpolar polymer surfaces in multivalent electrolytes mehr
    Physical Chemistry, Chemical Physics 11 (2009) 4360-4364

  18. Cordeiro, A. L.; Zimmermann, R.; Gramm, S.; Nitschke, M.; Janke, A.; Schäfer, N.; Grundke, K.; Werner, C.
    Temperature dependent physicochemical properties of poly(N-isopropylacrylamide-co-N-(1-phenylethyl) acrylamide) thin films mehr
    Soft Matter 5 (2009) 1367-1377

  19. Zimmermann, R.; Küttner, D.; Renner, L.; Kaufmann, M.; Zitzmann, J.; Müller, M.; Werner, C.
    Charging and structure of zwitterionic supported lipid bilayer membranes studied by streaming current measurements, fluorescence microscopy, and ATR-FTIR spectroscopy mehr
    Biointerphases 4 (2009) 1-6

  20. Dukhin, St.; Zimmermann, R.; Werner, C.
    Charge density distribution at interfaces between polyelectrolyte layers and aqueous solutions - Experimental access and limitations of traditional electrokinetics mehr
    Journal of Colloid and Interface Science 328 (2008) 186-195

  21. Lanfer, B.; Freudenberg, U.; Zimmermann, R.; Stamov, D.; Körber, V.; Werner, C.
    Aligned fibrillar collagen matrices obtained by shear flow deposition mehr
    Biomaterials 29 (2008) 3888-3895

  22. Zimmermann, R.; Osaki, T.; Gauglitz, G.; Werner, C.
    Combined microslit electrokinetic measurements and reflectometric interference spectroscopy to study protein adsorption processes mehr
    Biointerphases 2 (2007) 159-164

  23. Dukhin, St.; Zimmermann, R.; Werner, C.
    Electrophoresis of soft particles at high electrolyte concentrations: An interpretation by the Henry theory mehr
    Journal of Colloid and Interface Science 313 (2007) 676-679

  24. Freudenberg, U.; Zimmermann, R.; Schmidt, K.; Behrens, S.-H.; Werner, C.
    Charging and swelling of cellulose films mehr
    Journal of Colloid and Interface Science 309 (2007) 360-365

  25. Härtl, A.; Garrido, J. A.; Nowy, S.; Zimmermann, R.; Werner, C.; Horinek, D.; Netz, R.; Stutzmann, M.
    The ion sensitivity of surface conductive single crystalline diamond mehr
    Journal of the American Chemical Society 129 (2007) 1287-1292

  26. Dukhin, St.; Zimmermann, R.; Werner, C.
    Surface conductivity reveals counterion condensation within grafted polyelectrolyte layers mehr
    Journal of Physical Chemistry / B 111 (2007) 979-981

  27. Pompe, T.; Mothes, M.; Mothes, G.; Nitschke, M.; Teese, M.; Zimmermann, R.; Werner, C.
    Surface modification of poly(hydroxybutyrate) films to control cell-matrix adhesion mehr
    Biomaterials 28 (2007) 28-37

  28. Zimmermann, R.; Osaki, T.; Schweiß, R.; Werner, C.
    Electrokinetic microslit experiments to analyse the charge formation at solid/liquid interfaces mehr
    Microfluidics and Nanofluodics 2 (2006) 367-379

  29. Dukhin, St.; Zimmermann, R.; Werner, C.
    Electrokinetic fingerprinting of grafted polyelectrolyte layers - a theoretical approach mehr
    Advances in Colloid and Interfaces Science 122 (2006) 93-105

  30. Zimmermann, R.; Osaki, T.; Kratzmüller, Th.; Gauglitz, G.; Dukhin, St.; Werner, C.
    Electrostatic Switching of Biopolymer Layers. Insights from Combined Electrokinetics and Reflectometric Interference mehr
    Analytical Chemistry 78 (2006) 5851-5857

  31. Delgado, A.V.; González-Caballero, F.; Hunter, R.J.; Koopal, L. K.; Lyklema, J.; Alkafeef, S.; Chibowski, E.; Grosse, C.; Dukhin, A.S.; Dukhin, S.S.; Furusawa, K.; Jack, R.; Kallay, N.; Kaszuba, M.; Kosmulski, M.; Nörenberg, R.; O'Brien, R.W.; Ribitsch, V.; Shilov, V.N.; Simon, F.; Werner, C.; Zhukov, A.; Zimmermann, R.
    Measurement and Interpretation of Electrokinetic Phenomena (IUPAC Technical Report) mehr
    Pure and Applied Chemistry 77 (2005) 1753-1805

  32. Zimmermann, R.; Norde, W.; Cohen Stuart, M.A.; Werner, C.
    Electrokinetic Characterization of Poly(Acrylic Acid) and Poly(Ethylene Oxide) Brushes in Aqueous Electrolyte Solutions mehr
    Langmuir 21 (2005) 5108-5114

  33. Dukhin, St.; Zimmermann, R.; Werner, C.
    Electrokinetic phenomena at grafted polyelectrolyte layers mehr
    Journal of Colloid and Interface Science 286 (2005) 761-773

  34. Dukhin, St.; Zimmermann, R.; Werner, C.
    Intrinsic Charge and Donnan potentials of grafted polyelectrolyte layers determined by surface onductivity data mehr
    Journal of Colloid and Interface Science 274 (2004) 309-318

  35. Zimmermann, R.; Kratzmüller, Th.; Erickson, D.; Li, D.; Braun, H.-G.; Werner, C.
    Ionic Strength-Dependent pK-Shift in the Helix-Coil Transition of Grafted Poly(L-glutamic acid) Layers Analyzed by Electrokinetic and Ellipsometric Measurements mehr
    Langmuir 20 (2004) 2369-2374

  36. Osaki, T.; Zimmermann, R.; Kratzmüller, Th.; Schweiß, R.; Werner, C.
    Polyanion Protection of Silane Bonds to Silicon Oxide Revealed by Electrokinetic Measurements mehr
    Langmuir 20 (2004) 524-527

  37. Zimmermann, R.; Birkert, O.; Gauglitz, G.; Werner, C.
    Electrosurface Phenomena at Polymer Films for Biosensors Applications mehr
    ChemPhysChem 4 (2003) 509-514

  38. Rößler, S.; Zimmermann, R.; Scharnweber, D.; Werner, C.; Worch, H.
    Characterization of oxide layers on Ti6A14V and titanium by streaming potential and streaming current measurements mehr
    Colloids and Surfaces B: Biointerfaces 26 (2002) 387-395

  39. Dukhin, S.S.; Zimmermann, R.; Werner, C.
    A concept for the generalization of the standard electrokinetic model mehr
    Colloids and Surfaces A: Physicochemical and Engineering Aspects 195 (2001) 103-112

  40. Zimmermann, R.; Dukhin, S.S.; Werner, C.
    Electrokinetic Measurements Reveal Interfacial Charge at Polymer Films Caused by Simple Electrolyte Ions mehr
    Journal of Physical Chemistry 105 (2001) 8544-8549

  41. Werner, C.; Zimmermann, R.; Kratzmüller, Th.
    Streaming potential and streaming current measurements at planar solid/liquid interfaces for simultaneous determination of zeta potential and surface conductivity mehr
    Colloids and Surfaces A: Physicochemical and Engineering Aspects 192 (2001) 205-213

  42. Zimmermann, R.; Jenschke, W.; Körber, H.; Werner, C.
    Bestimmung des Zeta-Potentials und der Grenzflächenleitfähigkeit durch Strömungspotential- und Strömungsstrommessungen = Determination of the Zeta Potential and the Surface Conductivity by Streaming Potential and Streaming Current Measurements mehr
    Technisches Messen 67 (2000) 353-360

  43. Werner, C.; König, U.; Augsburg, A.; Arnhold, Ch.; Körber, H.; Zimmermann, R.; Jacobasch, H.-J.
    Electrokinetic surface characterization of biomedical polymers - a survey mehr
    Colloids and Surfaces A: Physicochemical and Engineering Aspects 159 (1999) 519-529

  44. Werner, C.; Körber, H.; Zimmermann, R.; Dukhin, S.S.; Jacobasch, H.-J.
    Extended Electrokinetic Characterization of Flat Solid Surfaces mehr
    Journal of Colloid and Interface Science 208 (1998) 329-346

 
Dr. Ralf Zimmermann
Dr. Ralf Zimmermann
 

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Dr. Ralf Zimmermann