Back to overview

Invited Lecture

Surfaces and Gels for controlling Calcium Phosphate Deposition

Wednesday (07.06.2017)
15:50 - 16:30 Förde II + III
Part of:
Line-Up:
12:20 Invited Lecture Similarities and differences between magnetic hysteresis and hysteresis in phase transformations 0 Richard James
13:00 Invited Lecture Discovery and Design of Multifunctional Materials using Combinatorial and High-Throughput Experimentation 1 Prof. Dr. Alfred Ludwig
15:10 Invited Lecture Tuning Mechanical Properties of Spider Cuticle by its Composition and by Structural Gradients 0 Dr. Yael Politi
15:50 Invited Lecture Surfaces and Gels for controlling Calcium Phosphate Deposition 0 Prof. Dr. Andreas Taubert
17:40 Invited Lecture Probing the Structure and Dynamic Behaviors of Ferroelectrics by Electron Microscopy with Atomic Resolution in Real Time 0 Prof. Xiaoqing Pan
18:20 Invited Lecture Magnetoelectric Composites for Energy Harvesting 1 Robert E. Hord, Jr. Professor Shashank Priya
19:40 Invited Lecture Declamping in Lead Magnesium Niobate – Lead Titanate Films 1 Prof. Susan Trolier-McKinstry
20:20 Invited Lecture Integrated Magnetics and Multiferroics for Compact and Power Efficient Sensing, Power, RF, Microwave and mm-Wave Electronics 0 Prof. Nian X. Sun
21:00 Invited Lecture From Maxwell’s displacement current to nanogenerator driven self-powered systems and blue energy 0 Prof. Zhong Lin Wang
21:40 Invited Lecture Magnetoelectric Composites: from Sensors to Sensor Systems 0 Prof. Dr.-Ing. Gerhard Schmidt
22:20 Invited Lecture Metal–insulator transition in vanadium oxides films and its applications 1 Dr. Keisuke Shibuya
00:20 Invited Lecture In operando photoemission spectroscopy of PMN-PT interfaces 0 Prof. Dr. Kai Rossnagel
08:30 Invited Lecture Titanium-Tantalum High Temperature Shape Memory Spring Actuators 1 Prof. Dr. Gunther Eggeler
09:10 Invited Lecture Vortex-antivortex topological structures in multiferroic tunnel junctions 1 Dr. Ana Sanchez
09:50 Invited Lecture Artificial Ferroic Systems 1 Prof. Laura Heyderman
17:40 Invited Lecture Biomimicry at the molecular level: Molecularly imprinted polymers as synthetic antibody mimics 0 Karsten Haupt
Session Chair
Topic Invited Lecture:
Belongs to:


Calcium phosphate is one of the most important biominerals.1,2 Templated or biomimetic calcium phosphate mineralization provides access to a large variety of calcium phosphate composites that could for instance be useful for bone repair. Most experiments on the formation of such composites involve the precipitation of a mineral phase from bulk aqueous solution. This process is, however, rather unrelated to true biological conditions because the effects of surfaces and interfaces are ignored. 

The presentation will show how model surfaces, both at the solid-liquid3 and the liquid-air interface,4-7 affect calcium phosphate formation. A special emphasis is put on the effects of polycations, such as poly(2-dimethylethylamino methacrylate) (PDMAEMA), because polycations have been less extensively studied than polyanions and there is hence a lack of information on their role in calcium phosphate mineralization. This also applies to the effects of oligomeric compounds as mineralization templates.8 Our studies show that not only the type of surface (anionic vs. cationic) but also the charge of each polymer surface (charged vs. uncharged) and the architecture of the hydrophilic groups (dendritic vs. linear) strongly affect the outcome of the mineralization process. A preliminary hypothesis of how polycations may regulate calcium phosphate is also proposed9 and – time permitting – I will also present some recent data on how ionic liquids can be used to generate biotolerant composite materials.10

References

(1)       Calcium Phosphates in Biological and Industrial Systems; Kluwer Academic Publishers: Norwell-Dordrecht, 1998.

(2)       Handbook of Biomineralization; Wiley-VCH: Weinheim, 2007.

(3)       Löbbicke, R.; Chanana, M.; Schlaad, H.; Pilz-Allen, C.; Günter, C.; Möhwald, H.; Taubert, A. Biomacromolecules 2011, 12, 3753.

(4)       Casse, O.; Colombani, O.; Kita-Tokarczyk, K.; Müller, A. H. E.; Meier, W.; Taubert, A. Faraday Discuss. 2008, 139, 179.

(5)       Junginger, M.; Bleek, K.; Kita-Tokarczyk, K.; Reiche, J.; Shkilnyy, A.; Schacher, F.; Müller, A. H. E.; Taubert Nanoscale 2010, 2, 2440.

(6)       Junginger, M.; Kita-Tokarczyk, K.; Schuster, T.; Reiche, J.; Schacher, F. A.; Müller, A. H. E.; Cölfen, H.; Taubert, A. Macromol. Biosci. 2010, 10, 1084.

(7)       Junginger, M.; Kübel, C.; Schacher, F. H.; Müller, A. H. E.; Taubert, A. RSC Adv. 2013, 3, 11301.

(8)       Hentrich, D.; Junginger, M.; Bruns, M.; Börner, H. G.; Brandt, J.; Brezesinski, G.; Taubert, A. Cryst. Eng. Comm. 2015, DOI: 10.1039/C4CE02274B

(9)       Shkilnyy, A.; Schöne, S.; Rumplasch, C.; Uhlmann, A.; Hedderich, A.; Taubert, A. Colloid Polym. Sci. 2011, 289, 881.

(10)     Salama, A.; Neumann, M.; Günter, C.; Taubert, A. Beilstein. J. Nanotechnol. 2014, 5, 1553.

 

 

Speaker:
Prof. Dr. Andreas Taubert
University of Potsdam