Publications

"Cryogenic transmission electron microscopy for observation of monomer protrusions that emerge during formation of dumbbell-shaped polymer colloids"
Stuckert, R.; Krumova, M.; Wittemann, A. Colloid Polym. Sci. 2022, 10.1007/s00396-022-05000-1.
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"Phase Behaviour in 2D assemblies of dumbbell-shaped colloids generated under geometrical confinement"
Stuckert, R.; Lüders, A.; Wittemann, A.; Nielaba, P. Soft Matter 2021, 17, 6499.
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"Direct measurement of sedimentation coefficient distributions in multimodal nanoparticle mixtures"
Plüisch, C.S.; Stuckert, R.; Wittemann, A. Nanomaterials 2021, 11, 1027.
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"Adsorption mechanism, secondary structure and local distribution of proteins at polyelectrolyte brushes"
Czeslik, C.; Wittemann, A. Colloid Polym. Sci. 2020, 298, 775.
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"Zonal rotor centrifugation revisited: new horizons in sorting nanoparticles"
Plüisch, C.S.; Bössenecker, B.; Dobler, L.; Wittemann, A. RSC Adv. 2019, 9, 27549.
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"Experimental assessment and model validation on how shape determines sedimentation and diffusion of colloidal particles"
Stuckert, R; Plüisch, C.S.; Wittemann, A. Langmuir 2018, 34, 13339.
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"Influence of substrates and rutile seed layers on the assembly of hydrothermally grown rutile TiO2 nanorod arrays"
Kalb, J; Dorman, J.A.; Folger, A.; Gerigk, M.; Knittel, V.; Plüisch, C.S.; Trepka, B.; Lehr, D.; Chua, E.; Goodge, B.H.; Wittemann, A.; Scheu, C.; Polarz, S.; Schmidt-Mende, L. J. Cryst. Growth 2018, 494, 26.
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"Assembly of Nanoparticles into "Colloidal Molecules": Toward Complex and yet Defined Colloids with Exciting Perspectives"
Plüisch, C.S.; Wittemann, A. in Advances in Colloid Science, Rahman, M., Asiri, A.M., Eds., InTech, Rijeka, 2016.
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"Shape-Tailored Polymer Colloids on the Road to Become Structural Motifs for Hierarchically Organized Materials"
Plüisch, C.S.; Wittemann, A. Macromol. Rapid Commun. 2013, 34, 1798.
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"Giant Hollow Fiber Formation through Self-Assembly of Oppositely Charged Polyelectrolyte Brushes and Gold Nanoparticles"
Crassous, J.J.; Millard, P.-E.; Mihut, A.M.; Wittemann, A.; Drechsler, M.; Ballauff, M.; Schurtenberger, P. Soft Matter 2013, 9, 9111.
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"The Role of Substrate Wettability in Nanoparticle Transfer from Wrinkled Elastomers: Fundamentals and Application toward Hierarchical Patterning"
Hanske, C.; Müller, M.B.; Bieber, V.; Tebbe, M.; Jessl, S.; Wittemann, A.; Fery, A. Langmuir 2012, 28, 16745.
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"Organized Plasmonic Clusters with High Coordination Number and Extraordinary Enhancement in Surface-Enhanced Raman Scattering (SERS)”
Pazos-Perez, N.; Wagner, C.S.; Romo-Herrera, J.M.; Liz-Marzán, L.M.; García de Abajo, F.J.; Wittemann, A.; Fery, A.; Alvarez-Puebla, R. Angew. Chem. 2012, 124, 12860.
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"Adsorption of Spherical Polyelectrolyte Brushes: from Interactions to Surface Patterning”
Hanske, C.; Erath, J.; Kühr, C.; Trebbin, M.; Schneider, C.; Wittemann, A.; Fery, A. Z. Phys. Chem. 2012, 226, 569.
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"Spherical Polymer Brushes”
Lu, Y.; Wittemann, A.; Ballauff, M. in Polymer Science: A Comprehensive Reference, Vol. 6, Müller A.H.E.; Wooley K.L., Eds., Elsevier, Oxford, 2012.
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"Salt-Regulated Attraction and Repulsion of Spherical Polyelectrolyte Brushes towards Polyelectrolyte Multilayers” 
Hanske, C.; Schneider, C.; Drechsler, M.; Wittemann, A.; Fery, A. Phys. Chem. Chem. Phys. 2012, 14, 4196.
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"Particle Nanosomes with Tailored Silhouettes”
Wagner, C.S.; Fortini, A; Hofmann, E.; Lunkenbein, T.; Schmidt, M.; Wittemann, A. Soft Matter 2012, 8, 1928.
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"Monte Carlo Computer Simulations and Electron Microscopy of Colloidal Cluster Formation via Emulsion Droplet Evaporation”
Schwarz, I.; Fortini, A.; Wagner, C.S.; Wittemann, A.; Schmidt, M. J. Chem. Phys. 2011, 135, 244501.
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"Giant Permittivity and Dynamic Mobility observed for Spherical Polyelectrolyte Brushes”
Jimenez, M.L.; Delgado, A.V.; Ahualli, S.; Hoffmann, M.; Wittemann, A.; Ballauff, M. Soft Matter 2011, 7, 3758.
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"Towards Nanoscale Composite Particles of Dual Complexity”
Wagner, C.S.; Shehata, S.; Henzler, K.; Yuan, J.; Wittemann, A. J. Colloid Interface Sci. 2011, 355, 115.
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"Nanoreactor-Assisted Polymerization towards Stable Dispersions of Conductive Composite Particles”
Korovin, A.N.; Sergeyev, V.G.; Pyshkina, O.A.; Hanske, Ch.; Fery, A.; Wittemann, A.; Tsarkova, L. Macromol. Rapid Commun. 2011, 32, 462.
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"Glycopolymer Grafted Polystyrene Nanospheres.”
Pfaff, A.; Shinde, V.S.; Lu, Y.; Wittemann, A.; Ballauff, M.; Müller, A.H.E. Macromol. Biosci. 2011, 11, 199.
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"Nanoparticle Assembly by Confinement in Wrinkles: Experiment and Theory.”
Schweickart, A.; Fortini, A.; Wittemann, A.; Schmidt, M.; Fery, A. Soft Matter 2010, 6, 5860.
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"Adsorption of β-Lactoglobulin on Spherical Polyelectrolyte Brushes: Direct Proof of Counterion Release by Isothermal Titration Calorimetry.”
Henzler, K.; Haupt, B.; Lauterbach, K.; Wittemann, A.; Borisov, O.; Ballauff, M. J. Am. Chem. Soc. 2010, 132, 3159.
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"Templated Assembly of Polymer Particles into Mesoscopic Clusters with well-defined Configurations.”
Wagner, C.S.; Fischer, B.; May, M.; Wittemann, A. Colloid Polym. Sci. 2010, 288, 487.
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"Enhanced Activity of Enzymes Immobilized in Thermoresponsive Core-Shell Microgels.”
Welsch, N.; Wittemann, A.; Ballauff, M. Phys. Chem. B 2009, 113, 16039.
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"3D Brownian Diffusion of Submicron-Sized Particle Clusters.”
Hoffmann, M.; Wagner, C.S., Harnau, L.; Wittemann, A. ACS Nano 2009, 3, 3326.
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"Supramolecular Structures Generated by Spherical Polyelectrolyte Brushes and their Application in Catalysis.”
Lu, Y.; Wittemann, A.; Ballauff, M. Macromol. Rapid Commun. 2009, 30, 806.
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"Quantitative Analysis of Polymer Colloids by Cryo-Transmission Electron Microscopy”
Crassous, J.J.; Rochette, C.N.; Wittemann, A.; Schrinner, M.; Ballauff, M.; Drechsler, M. Langmuir 2009, 25, 7862.
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"Preparation of Submicrometer-Sized Clusters from Polymer Spheres Using Ultrasonication”
Wagner, C.S.; Lu, Y.; Wittemann, A. Langmuir 2008, 24, 12126.
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"A novel photoreactor for the production of electrosterically stabilised colloidal particles at larger scales”
Schrinner, M.; Haupt, B.; Wittemann, A. Chem. Eng. J. 2008, 144, 138.
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"Direct imaging of temperature-sensitve core-shell latexes by cryogenic transmission electron microscopy”
Crassous, J.J.; Wittemann, A.; Siebenbürger, M.; Schrinner, M.; Drechsler, M.; Ballauff, M. Colloid Polym. Sci. 2008, 286, 805.
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"Directed Motion of Proteins along Tethered Polyelectrolytes”
Henzler, K.; Rosenfeldt, S.; Wittemann, A.; Harnau, L.; Finet, S.; Narayanan, T.; Ballauff, M. Phys. Rev. Lett. 2008, 100, 158301.
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"Adsorption of Bovine Hemoglobin onto Spherical Polyelectrolyte Brushes monitored by Small-angle X-ray Scattering and Fourier-Transform Infrared Spectroscopy”
Henzler, K.; Wittemann, A.; Breininger, E.; Ballauff, M.; Rosenfeldt, S. Biomacromolecules 2007, 8, 3674.
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"Biocompatible polymer vesicles from biamphiphilic triblock copolymers and their interaction with bovine serum albumin”
Wittemann, A.; Azzam, T.; Eisenberg, A. Langmuir 2007, 23, 2224.
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"Controlled release of Proteins Bound to Spherical Polyelectrolyte Brushes”
Wittemann, A.; Haupt, B.; Ballauff, M. Z. Phys. Chem. NF 2007, 221, 113.
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"Interaction of Proteins with Linear Polyelectrolytes and Spherical Polyelectrolyte Brushes in Aqueous Solution”
Wittemann, A.; Ballauff, M. Phys. Chem. Chem. Phys. 2006, 8, 5257.
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"Polyelectrolyte-mediated protein adsorption”
Wittemann, A.; Haupt, B.; Ballauff, M. Progr. Colloid Polym. Sci. 2006, 133, 58.
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"Preparation of Polystyrene-Poly(N-isopropylacrylamide) (PS-PNIPA) Core-Shell Latex Particles by Photoemulsion Polymerization”
Lu, Y.; Wittemann, A.; Ballauff, M.; Drechsler, M. Macromol. Rapid Commun. 2006, 27, 1137.
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"High Elongation of Polyelectrolyte Chains in the Osmotic Limit of Spherical Polyelectrolyte Brushes: A Study by Cryogenic Transmission Electron Microscopy”
Wittemann, A.; Drechsler, M.; Talmon, Y.; Ballauff, M. J. Am. Chem. Soc. 2005, 127, 9688.
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"Synthesis, Characterization and Aqueous Solution Behavior of Star-shaped Poly(acrylic acid)”
Plamper, F.; Becker, H.; Lanzendörfer, M.; Patel, M.; Wittemann, A.; Ballauff, M.; Müller, A.H.E. Macromol. Chem. Phys. 2005, 206, 1813.
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"Activity of Enzymes Immobilized in Colloidal Spherical Polyelectrolyte Brushes”
Haupt, B.; Neumann, Th.; Wittemann, A.; Ballauff, M. Biomacromolecules 2005, 6, 948.
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"A modified box model including charge regulation for protein adsorption in a spherical polyelectrolyte brush”
Biesheuvel, P. M.; Wittemann, A. J. Phys. Chem. B 2005, 109, 4209.
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"Fluorescent Protein Binding to Individual Polyelectrolyte Nanospheres”
Anikin, K.; Röcker, C.; Wittemann, A.; Wiedenmann, J.; Ballauff, M.; Nienhaus, U. J. Phys. Chem. B 2005, 109, 5418.
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"Temperature-induced unfolding of Ribonuclease A embedded in spherical polyelectrolyte brushes.”
Wittemann, A.; Ballauff, M. Macromol. Biosci. 2005, 5, 13.
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"Interaction of Proteins with Spherical Polyelectrolyte Brushes in Solution as studied by Small-Angle X-ray Scattering”
Rosenfeldt, S.; Wittemann, A.; Ballauff, M.; Breininger, E.; Bolze, J.; Dingenouts, N. Physical Review E 2004, 70, 061403.
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"Salt-induced protein resistance of polyelectrolyte brushes studied by using fluorescence correlation spectroscopy and neutron reflectometry.”
Czeslik, C.; Jackler, G.; Hazlett T.; Gratton, E.; Steitz, R.; Wittemann, A.; Ballauff, M. Phys. Chem. Chem. Phys. 2004, 6, 5557.
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"Secondary structure analysis of proteins embedded in spherical polyelectrolyte brushes (SPB) by FT-IR spectroscopy.”
Wittemann, A.; Ballauff, M. Anal. Chem. 2004, 76, 2813.
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"Mechanism of protein binding to spherical polyelectrolyte brushes studied in situ using two-photon excitation fluorescence fluctuation spectroscopy.”
Czeslik, C.; Jansen, R.; Ballauff, M.; Wittemann, A.; Royer, C. A.; Gratton, E.; Hazlett, T. Physical Review E 2004, 69, 021401.
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"Spherical Polyelectrolyte Brushes as Carrier Particles for Proteins: An Investigation of the Structure of Adsorbed and Desorbed Bovine Serum Albumin.”
Jackler, G.; Wittemann, A.; Ballauff, M.; Czeslik, C. Spectroscopy 2004, 18, 289.
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"Adsorption of proteins on spherical polyelectrolyte brushes in aqueous solution.”
Wittemann, A.; Haupt, B.; Ballauff, M. Phys. Chem. Chem. Phys. 2003, 5, 1671.
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"Engineering the Interaction of Latex Spheres with Charged Surfaces: AFM Investigation of Spherical Polyelectrolyte Brushes on Mica.”
Mei, Y.; Wittemann, A.; Sharma, G.; Ballauff, M.; Koch, Th.; Gliemann, H.; Horbach, J.; Schimmel, Th. Macromolecules 2003, 36, 3452.
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"Interaction of dissolved proteins with spherical polyelectrolyte brushes.”
Wittemann, A.; Haupt, B.; Merkle, R.; Ballauff, M. Macromol. Symp. 2003, 191, 81.
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"Rheology of dilute and semidilute suspensions of spherical polyelectrolyte brushes.”
Marra, A.; Peuvrel-Disdier, E.; Wittemann, A.; Guo, X.; Ballauff, M. Colloid Polym. Sci. 2003, 281, 491.
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"Fixation of Proteins onto the Surface of Functionalized Polymer Particles.”
Wittemann, A.; Haupt, B.; Guo, X.; Ballauff, M. in DECHEMA Monographien, Vol. 137 (7th International Workshop on Polymer Reaction Engineering), VCH Weinheim, 2001.