BLOCK COPOLYMER ASSEMBLIES
- Aruni Shaj Kumar (PhD student)
The goal of our research is synthesis and investigation of novel polymer/inorganic nanocomposites with tailored architectures and properties. More specifically, we are working on so-called block copolymer (BCP) templating methods in which self-assembled block copolymers are used as scaffolds for the incorporation of various functionalities, such as plasmonics or magnetic nanoparticles, nanorods, quantum dots, or small molecules (supramolecular systems). Such polymer/inorganic hybrids have a wide range of potential applications, for example as catalytic nanoreactors, nanosensors, optical waveguides, supercapacitors, etc. Our objects of interest include bulk samples, thin film, as well as BCP micelles. Synthetic methods which we use for the preparation of such hybrids are quite diverse. For instance, self-assembled block copolymers are used as scaffolds for the controlled positioning of pre-synthesized nanoparticles (ex-situ methods). On the other hand, self-assembled BCPs are used as structure-directing templates for the synthesis of inorganic counterparts (in-situ methods) and fabrication of nanostructures with a variety of morphologies, like core-shell, yolk-shell or hollow particles, nanofibers and nanotubes, etc. Finally, a combination of different approaches is also possible and delivers the pathways towards multicomponent hybrids having different functionalities selectively integrated into different BCP phases. In addition to an application oriented research, we particularly focus on fundamental aspects and understanding of self-assembling phenomena in such complex systems to be able predict behavior and rationalize the relationship between their structure and properties. We use a variety of analytical methods and techniques to investigate and characterize our systems. These include DLS, WAXS; SAXS, GISAXS, SEM, TEM, AFM, FTIR, UV-Vis, and other methods which provide complementary information about our systems.
- DFG: Ordering and Helical Structures of Nanoparticles in Block Copolymers (2014-2017)
- DFG: Polymer Microcapsules Prepared by Micellization of Block Copolymers for Catalytic Applications (2015-2017)
5 most important publications
- Nandan, B.; Horechyy, A. ACS Appl. Mater. Interfaces 2015, 7, (23), 12539-12558.
- Sanwaria, S.; Horechyy, A.; Wolf, D.; Chu, C.-Y.; Chen, H.-L.; Formanek, P.; Stamm, M.; Srivastava, R.; Nandan, B. Angew. Chem. Int. Ed. 2014, 53, (34), 9090-9093.
- Horecha, M.; Kaul, E.; Horechyy, A.; Stamm, M. J. Mater. Chem. A 2014, 2, (20), 7431-7438.
- Horechyy, A.; Nandan, B.; Zafeiropoulos, N. E.; Formanek, P.; Oertel, U.; Bigall, N. C.; Eychmüller, A.; Stamm, M. Adv. Funct. Mater. 2013, 23, (4), 483-490.
- Horechyy, A.; Zafeiropoulos, N. E.; Nandan, B.; Formanek, P.; Simon, F.; Kiriy, A.; Stamm, M. J. Mater. Chem. 2010, 20, (36), 7734-7741.
- Prof. Bhanu Nandan, IIT Delhi, India
- Prof. Nikolaos E. Zafeiropoulos, University of Ioannina, Greece
- Dr. Marcin Libera, Center of Polymer and Carbon Materials, PAS, Zabrze, Poland
- Prof. Myong-Hoon Lee, The Graduate School of Flexible and Printable Electronics, Chonbuk National University