Nano Science and Technology Institute

R&D Profile: Functional Nanomaterials – Synthesis and Applications - Bayer Technology Services, Germany, and Bayer Technology Services, USA

Bayer Technology Services GmbH (BTS) is actively pursuing the development of nanomaterials such as Baytubes®, Baydots®, Bayink®, metallic and metal oxide nanoparticles (or nanorods, nanoshells, etc.) with a characteristic diameter in the range of 1-100 nm. These nanomaterials have unique chemical and physical properties, with applications in photovoltaic, eletronics, catalysis, biomedicine and new composite materials.

Overview Courtesy of: M. Fu, W. Hoheisel, H.-C. Lu, F. Rauscher, S. Roy, S. Mukherjee, E. Boonstra, L. Mleczko Bayer Technology Services GmbH, Leverkusen, Germany, Bayer Technology Services Americas, Baytown, TX, USA

Bayer Technology Services GmbH (BTS) is actively pursuing the development of nanomaterials such as Baytubes®, Baydots®, Bayink®, metallic and metal oxide nanoparticles (or nanorods, nanoshells, etc.) with a characteristic diameter in the range of 1-100 nm. These nanomaterials have unique chemical and physical properties, with applications in photovoltaic, eletronics, catalysis, biomedicine and new composite materials, etc. The above mentioned applications require strict quality control in terms of size, shape, size distribution and surface functionalization. A new synthesis process based on continuous flow system has been developed to overcome the obstacles in traditional batch processes such as low reproducibility, high production cost, and scale-up difficulties. BTS along with its subsidiaries worldwide are focused on developing a comprehensive process technology to address the increasing strong needs for functional nanomaterials. Based on this technology BTS can deliver nanomaterials with controlled parameters in a cost effective manner. The process is also aimed to minimize post processing efforts before adapting the nanomaterials for different applications via surface functionalization treatment. The comprehensive process technology uses a wide range of continuous flow-through devices suited to individual materials. This technology has the following advantages: (1) highly efficient heat exchange and rapid mixing (2) excellent reproducibility (3) potential for scale-up and cost-effective production. The BTS processes allow the synthesis of nanomaterials with specific properties, for example, (1) semiconductor nanocrystalline (i.e. quantum dots) & nanophosphors covering absorption and emission wavelength from UV to NIR (2) metallic nanoparticles (e.g. Au, Ag, Pt, etc.) targeting electronics, catalysis or life science and biomedical applications (3) magnetic nanoparticles for biomedical applications.

The BTS nanotechnology portfolio spans the entire value chain from the development of processes for synthesis, recovery and purification of customized nanoparticles to the modification and processing of nanoparticles in the context of application development, as well as the characterization of nanoparticles and nanostructures. Our comprehensive know-how of the interplay of synthesis and application developments and our sophisticated characterization methods enable us to develop innovative products that have been efficiently functionalized for our customers using nanotechnology on an industrial scale. We have been active in the area of nanomaterials for several years and over this time we have been able to exploit its potential for our customers in numerous developments of innovative products.

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Figure Functional nanomaterials: from synthesis to applications. Samples of application: (1) hybrid solar cells based on Baydot® and semiconducting polymers (right up) and (2) inkjet printed conductive microstructures based on Bayink® (right down)

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