Our Team

Dr. Alexander Welle

Senior Scientist

QUT Contact Details

Brief Curriculum Vitae
since 2013 Researcher at the Institute of Functional Interfaces, and ToF-SIMS Technology Expert at the Karlsruhe Nano Micro Facility, Karlsruhe Institute of Technology (KIT), Karlsruhe, Germany
08/2013 – 03/2017 Researcher in the Macroarc Group and the Institute for Chemical Technology and Polymer Chemistry, Karlsruhe Institute of Technology (KIT), Karlsruhe, Germany
06/1999 – 07/2013 Researcher and Group Leader at the Institute for Biological Interfaces, Karlsruhe Institute of Technology (KIT), Karlsruhe, Germany
01/1999 – 04/1999 Visiting Scientist at the Department of Chemical Engineering, University of Illinois, USA, Urbana-Champaign, supervised by Prof. Dr. Deborah Leckband
08/1994 – 04/1998 PhD (Dr. rer. nat.) in Applied Physical Chemistry at the Heidelberg University, Heidelberg, Germany, supervised by Prof. Dr. M. Grunze. Thesis Title: The blood compatibility of Poly[bis(trifluoroethoxy)phosphazene]-surfaces
07/1993 – 07/1994 Diploma Thesis (Applied Physical Chemistry) at the Heidelberg University, Heidelberg, Germany, supervised by Prof. Dr. M. Grunze. Thesis Title: Self-organizing thiol layers on silver, palladium and alloy surfaces

Research Interests

Surface Analysis

  • Time-of-Flight Secondary Ion Mass Spectrometry

Applied Materials Science

  • Polymer printing
  • Hydrogen embrittlement
  • Solar cells
  • Environmental chemistry
  • Corrosion and Tribology

2020
[649] Multi-material 3D Microstructures with Photochemically Adaptive Mechanical Properties

Gernhardt, M.; Frisch, H.; Welle, A.; Jones, R.; Wegener, M.; Blasco, E.; Barner-Kowollik, C. J. Mater. Chem C 2020, 8, 10993-11000.

[626] Mass Spectrometry as a Tool to Advance Polymer Science

De Bruycker, K.; Welle, A.; Hirth, S.; Blanksby, S. J.; Barner-Kowollik, C. Nat. Rev. Chem. 2020, 4, 257-268.

2019
[602] Controlling Biofilm Formation with Nitroxide Functional Surfaces

Woehlk, H.; Trimble, M. J.; Mansour, S. C.; Pletzer, D.; Trouillet, V.; Welle, A.; Barner, L.; Hancock, R. E. W.; Barner-Kowollik, C.; Fairfull-Smith, K. E. Polym. Chem. 2019, 10, 4252-4258.

[604] Adaptable and Reprogrammable Surfaces

Goldmann, A. S.; Boase, N. R. B.; Michalek, L.; Blinco, J. P.; Welle, A.; Barner-Kowollik, C. Adv. Mater. 2019, 31, 1902665.

[623] Photo-Cross-Linkable Polymer Inks for Solution-Based OLED Fabrication

Kunz, S. V.; Cole, C. M.; Welle, A.; Shaw, P. E.; Sonar, P.; Thoebes, N.-P.; Baumann, T.; Yambem, S. D.; Blasco, E.; Blinco, J. P.; Barner-Kowollik, C. Macromolecules 2019, 52, 9105-9113.

2018
[578] Dynamic Nitroxide Functional Materials

Woehlk, H.; Lauer, A.; Trouillet, V.; Welle, A.; Barner, L.; Blinco, J. P.; Fairfull-Smith, K. E.; Barner-Kowollik, C. Chem. Eur. J. 2018, 24, 18873-18879.

[552] Reversible Surface Engineering via Nitrone-Mediated Radical Coupling

Laun, J.; Marchal, W.; Trouillet, V.; Welle, A.; Hardy, A.; Van Bael, M. K.; Barner-Kowollik, C.; Junkers, T. Langmuir 2018, 34, 3244-3255.

[539] 2D Laser Lithography on Silicon Substrates via Photoinduced Copper-Mediated Radical Polymerization

Laun, J.; De Smet, Y.; Van de Reydt, E.; Krivcov, A.; Trouillet, V.; Welle, A.; Möbius, H.; Barner-Kowollik, C.; Junkers, T. Chem. Commun. 2018, 54, 751-754.

[528] Exploiting λ-Orthogonal Photoligation for Layered Surface Patterning

Lederhose, P.; Abt, D.; Welle, A.; Müller, R.; Barner-Kowollik, C.; Blinco, J. P. Chem. Eur. J. 2018, 24, 576-580.

2017
[491] Light-driven Reversible Surface Functionalization with Anthracenes: Visible Light Writing and Mild UV Erasing

Claus, T. K.; Telitel, S.; Welle, A.; Bastmeyer, M.; Vogt, A. P.; Delaittre, G.; Barner-Kowollik, C. Chem. Commun. 2017, 53, 1599-1602.

2016
[457] Recodable Surfaces Based on Switchable Hydrogen Bonds

Wedler-Jasinski, N.; Delbosc, N.; Virolleaud, M.-A.; Montarnal, D.; Welle, A.; Barner, L.; Walther, A.; Bernard, J.; Barner-Kowollik, C. Chem. Commun. 2016, 52, 8753-8756.

[440] Simultaneous Dual Encoding of Three-Dimensional Structures by Light-Induced Modular Ligation

Claus, T. K.; Richter, B.; Hahn, V.; Welle, A.; Kayser, S.; Wegener, M.; Bastmeyer, M.; Delaittre, G.; Barner-Kowollik, C. Angew. Chem. Int. Ed. 2016, 55, 3817-3822.

[426] Controlled Radical Polymerization and In-Depth Mass-Spectrometric Characterization of Poly(Ionic Liquid)s and their Photopatterning on Surfaces

Steinkoenig, J.; Bloesser, F. R.; Huber, B.; Welle, A.; Trouillet, V.; Weidner, S.; Barner, L.; Roesky, P. W.; Yuan, J.; Goldmann, A. S.; Barner-Kowollik, C. Polym. Chem. 2016, 7, 451-461.

[425] Bottom-Up Fabrication of Nanopatterned Polymers on DNA Origami by In Situ Atom-Transfer Radical Polymerization

Tokura, Y.; Jiang, Y.; Welle, A.; Stenzel, M. H.; Krzemien, K.; Michaelis, J.; Berger, R.; Barner-Kowollik, C.; Wu, Y.; Weil, T. Angew. Chem. Int. Ed. 2016, 55, 5692-5697.

2015
[384] Macromolecular Surface Design: Photopatterning of Functional Stable Nitrile Oxides

Altintas, O.; Glassner, M.; Rodriguez-Emmenegger, C.; Welle, A.; Trouillet, V.; Barner-Kowollik, C. Angew. Chem. Int. Ed. 2015, 54, 5777-5783.

[397] Photo-Induced Surface Encoding of Gold Nanoparticles

Stolzer, L.; Quick, A. S.; Abt, D.; Welle, A.; Naumenko, D.; Lazzarino, M.; Wegener, M.; Barner-Kowollik, C.; Fruk, L. Chem. Commun. 2015, 51, 3363-3366.

[398] Photolithographic Patterning of 3D-Formed Polycarbonate Films for Targeted Cell Guiding

Hirschbiel, A. F.; Geyer, S.; Yameen, B.; Welle, A.; Nikolov, P.; Giselbrecht, S.; Scholpp, S.; Delaittre, G.; Barner-Kowollik, C. Adv. Mater. 2015, 27, 2621-2626.

[401] A Photolithographic Approach to Spatially Resolved Cross-Linked Nanolayers

Fuchise, K.; Lindemann, P.; Heißler, S.; Gliemann, H.; Trouillet, V.; Welle, A.; Berson, J.; Walheim, S.; Schimmel, T.; Meier, M. A. R.; Barner-Kowollik, C. Langmuir 2015, 31, 3242-3253.

[410] Surface Grafting via Photo-induced Copper-mediated Radical Polymerization at Extremely Low Catalyst Concentrations

Laun, J.; Vorobii, M.; de los Santos Pereira, A.; Pop-Georgievski, O.; Trouillet, V.; Welle, A.; Barner-Kowollik, C.; Rodriguez-Emmenegger, C.; Junkers, T. Macromol. Rapid Commun. 2015, 36, 1681-1686.

[415] Photolithographic Encoding of Metal Complexes

Lang, C.; Bestgen, S.; Welle, A.; Müller, R.; Roesky, P. W.; Barner-Kowollik, C. Chem. Eur. J. 2015, 21, 14728-14731.

[417] Light-Driven Nitrile Imine-Mediated Tetrazole-Ene Cycloaddition as a Versatile Platform for Fullerene Conjugation

Sugawara, Y.; Jasinski, N.; Kaupp, M.; Welle, A.; Zydziak, N.; Blasco, E.; Barner-Kowollik, C. Chem. Commun. 2015, 51, 13000-13003.

[431] Designing π-Conjugated Polymeric Nano- and Microstructures via Light Induced Chemistry

Blasco, E.; Yameen, B.; Quick, A. S.; Krolla-Sidenstein, P.; Welle, A.; Wegener, M.; Barner-Kowollik, C. Macromolecules 2015, 48, 8718-8728.

2014
[370] Photo-Induced Functionalization of Spherical and Planar Surfaces via Caged Thioaldehyde End-Functional Polymers

Kaupp, M.; Quick, A. S.; Rodriguez-Emmenegger, C.; Welle, A.; Trouillet, V.; Pop-Georgievski, O.; Wegener, M.; Barner-Kowollik, C. Adv. Funct. Mater. 2014, 24, 5649-5661.

[367] Ambient Temperature Ligation of Diene Functional Polymer and Peptide Strands onto Cellulose via Photochemical and Thermal Protocols

Tischer, T.; Claus, T. K.; Oehlenschlaeger, K. K.; Trouillet, V.; Bruns, M.: Welle, A.; Linkert, K.; Goldmann, A. S.; Börner, H. G.; Barner-Kowollik, C. Macromol. Rapid Commun. 2014, 35, 1121-1127.

[357] Fabrication and Spatially Resolved Functionalization of 3D Microstructures via Multiphoton-Induced Diels–Alder Chemistry

Quick, A. S.; Rothfuss, H.; Welle, A.; Richter, B.; Fischer, J.; Wegener, M.; Barner-Kowollik, C. Adv. Funct. Mater. 2014, 24, 3571-3580.

2013
[308] Polymer Surface Patterning via Diels-Alder Trapping of Photo-Generated Thioaldehydes

Glassner, M.; Oehlenschlager, K. K.; Welle, A.; Bruns, M.; Barner-Kowollik, C. Chem. Commun. 2013, 49, 633-635.

[314] Photochemical Generation of Light Responsive Surfaces

Blasco, E.; Piñol, M.; Oriol, L.; Schmidt, B. V. K. J.; Welle, A.; Trouillet, V.; Bruns, M.; Barner-Kowollik, C. Adv. Funct. Mater. 2013, 23, 4011-4019.

[322] Spatially Controlled Surface Immobilization of Nonmodified Peptides

Pauloehrl, T.; Welle, A.; Bruns, M.; Linkert, K.; Börner, H. G.; Bastmeyer, M.; Delaittre, G.; Barner-Kowollik, C. Angew. Chem. Int. Ed. 2013, 52, 9714-9718.

[326] Spatially Controlled Surface Immobilization of Nucleophiles via Trapping of Photo-Generated Thioaldehydes

Pauloehrl, T.; Welle, A.; Oehlenschlaeger, K. K.; Barner-Kowollik, C. Chem. Sci. 2013, 4, 3503-3507.

2012
[270] Adding Spatial Control to Click Chemistry: Phototriggered Diels–Alder Surface (Bio)functionalization at Ambient Temperature

Pauloehrl, T.; Delaittre, G.; Winkler, V.; Welle, A.; Bruns, M.; Börner, H. G.; Greiner, A. M.; Bastmeyer, M.; Barner-Kowollik, C. Angew. Chem. Int. Ed. 2012, 51, 1071-1074.

2026
[10] Hydrogen response to high-density dislocations in bulk perovskite oxide SrTiO3

Fang, X.; Dörrer, L.; Korneychuk, S.; Vrellou, M.; Welle, A.; Wagner, S.; Pundt, A.; Schmidt, H.; Kirchlechner, C. Journal of the American Ceramic Society, 2026, 109, e70291

2025
[09] Overlapping Nanostacks Enable Direct Printing of Organic LEDs

Lux, S.; Schlindwein, J.; Plank, M.; Reichert, K.-M.; Koker, L.; Rosa, M.; Amir, M.; Weber, B.; Müller, E.; Welle, A.; Kuznetsova, N.; Kraft, M.; Eggeler, Y. M.; Weber, L. K.; Mattes, D.; Gengenbach, U.; Stahlberger, M.; Korvink, J. G.; Breitling, F.; Mager, D. Advanced Materials Interface, 2025, 12, e00501

[08] High quality superconducting tantalum resonators with beta phase defects

Dhundhwal, R.; Duan, H.; Brauch, L.; Arabi, S.; Fuchs, D.; Haghighirad, A.-A.; Welle, A.; Scharwarchter, F.; Pal, S.; Scheffler, M.; Palomo, J.; Murani, A.; Hahn, H.; Aghassi-Hagmann, J.; Kübel, C.; Wulfhekel, W.; Pop, I. M.; Reisinger, T. Appl. Phys. Lett. 2025, 127, 214005

2023
[07] Impact of high shear blending on distribution of magnesium stearate on lactose for dry powder inhaled formulations

Welle, A.; Mehta, M.; Marek, K.; Peters, H.; van der Wel, P.; Imole, O. Intl. J. Pharmaceutics. 2023, 647, 123503

[06] A Facile Approach for 4D Microprinting of Multi-Photoresponsive Actuators

Hsu, L.-Y.; Mainik, P.; Münchinger, A.; Lidenthal, S.; Spratte, T.; Welle, A.; Zaumseil, J.; Selhuber-Unkel, C.; Wegener, M.; Blasco, E. Adv. Mat. Technol. 2023, 8, 2200801

2022
[05] Identification of Zirconia Particle Uptake in Human Osteoblasts by ToF-SIMS Analysis and Particle-Size Effects of Cell Metabolism

Welle, A.; Rabel, K.; Schwotzer, M.; Kohal, R. J.; Steinberg, T.; Altmann, B. Nanomaterials, 2022, 12, 4272

[04] Covalent Adaptable Microstructures via Combining Two-Photon Laser Printing and Alkoxyamine Chemistry: Toward Living 3D Microstructures

Jia, Y.; Spiegel, C. A.; Welle, A.; Heissler, S.; Sedghamiz, E.; Liu, M.; Wenzel, W.; Hackner, M.; Spatz, J. P.; Tsotsalas, M.; Blasco, E. Adv. Func. Mat. 2022, 33, 2207826

[03] Sorption of Fulvic Acids onto Titanium Dioxide Nanoparticles Extracted from Commercial Sunscreens: ToF-SIMS and High-Dimensional Data Analysis

Khomami, N. T. S.; Welle, A.; Kunz, S.; Philippe, A. Coatings. 2022, 12, 335

2020
[02] A combined high-throughput and high-content platform for unified on-chip synthesis, characterization and biological screening

Benz, M.; Asperger, A.; Hamester, M.; Welle, A.; Heissler, S.; Levkin, P. A. Nat. Comm. 2020, 11, 5391

[01] Advanced Bifunctional Oxygen Reduction and Evolution Electrocatalyst Derived from Surface-Mounted Metal-Organic Frameworks

Li, W.; X, S.; Watzele, S.; Hou, S.; Fichtner, J.; Semrau, A. L.; Zhou, L.; Welle, A.; Bandarenka, A. S.; Fischer, R. A. Angew. Chem. Int. Ed. 2020, 59, 5837-5843

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