Welcome to The Gröschel Group

Here you find a one page summary of the Gröschel-Group. You are in the right place if you are looking for information about our group and members, recent news, running projects and our research, publications and job announcements.

For more information visit our new external group-page.

Course material for lectures can be found on Moodle or by following the link "Teaching".

The GROUP

Groupfoto NewOn the group photo from left to right: Nicole Janoszka, Ramzi Chakroun, Stefanie Tjaberings, Xiaolian Qiang, Alexander Tjaberings, Hans-Konrad Weber, Chen Chen,  Tai-Lam Nghiem, André Gröschel, Giada Quintieri, Andrea Steinhaus

NEWS and ANNOUNCEMENTS

Visit our NEWS section for updates on events, graduations, publications, conferences, visitors and everything else that is interesting

29.08. - 30.08.2018: Guest Prof. Orlando Rojas, Aalto University

29.08. - 23.08.2018: 256th ACS National Meeting in Boston, MA (USA)

01.09. - 30.11.2018: Visiting scientist Clement Chan from Cambridge, UK

 

TEACHING

Course material (slides, exercises, announcements) for the lectures listed below can be found on Moodle UDE or by clicken on the following links:

SoSe: "Basic Lecture on Macromolecular Chemistry" (Bachelor 6. Semester)

SoSe: "Basic Labcourse Physical Chemistry"

SoSe: "Modern Microscopy Methods" (Master 2. Semenster)

WS: "Advanced Course: Polymers in Nanotechnology" (Master 1. and 3. Semester)

 

RESEARCH

WHAT WE DO: Our group mainly operates in the fields of Polymer Science, Macromolecular Chemistry and Molecular Materials. These scientific disciplines are relatively young, but have already evolved into rapidly progressing areas of research for the development of functional materials. Materials often find use in many related fields including photonics, nanomedicine, and energy conversion.

HOW WE DO IT: In nature, organisms grow materials from the bottom up utilizing molecular and nanoscale raw materials from the environment to construct highly functional biological devices, machines and entire systems. Inspired by these materials and the way they form, our laboratory for polymer and colloid science focuses on the synthetic design of macromolecular and nanoscale building blocks for the autonomous formation of complex nano-systems with tailored functionality.

OUR MAIN AIM: Using the concept of self-assembly, we synthetically program building blocks to respond to certain stimuli and come together to find their place in in a variety of superstructures. This process is spontaneous, does not require any equipment, and is energy efficient. Thereby, one of the main goals is to encode building blocks from various sources (organic, inorganic, biological) with information about assembly time, their location, directionality, geometry and the number of self-assembly steps (hierarchies). The final materials will be used for applications requiring, optical properties, interfacial stabilizaiton, high porosity, biocompatibility, and catalytic activity.

STARTING MATERIALS: Specially designed block copolymers and patchy colloids are one of our main starting mamterils. Block copolymers are a certain type of polymer architecture that spontaneously form nanoparticles with predefined geometry as well as nanomaterials with complex symmetry based on simple packing principles. Their synthesis requires special techniques that we teach and develop. We use block copolymers also to form microparticles with compartments and patchy surface. Colloids are particles in the range of 1-1000 nm and are our second type of building block. We synthesize complex colloids directly by means of emulsion polymerization or assemble colloids from block copolymers to produce more complex colloids with special properties.

 

PUBLICATIONS

10 selcted publications of the gröschel-Group are listed below. For a complete list of publications visit our publication section

A. Steinhaus, T. Pelras, R. Chakroun, A.H. Gröschel*, M. Müllner*, "Self-assembly of diblock molecular polymer brushes in the spherical confinement of nanoemulsion droplets”, Macromol. Rapid Commun., 2018, DOI:10.1002/marc.201800177

T.-L. Nghiem, A. Steinhaus, R. Chakroun, S. Tjaberings, X. Qiang, C. Chen, A. Tjaberings, G. Quintieri, and A.H. Gröschel*, Self-Assembly of Soft Nanoparticles, Comprehensive Nanoscience and Nanotechnology, 2nd Ed., Elsevier, New York

M. Poutanen, G. Guidetti T.I. Gröschel, O. Borisov, S. Vignolini, O. Ikkala*, A.H. Gröschel*, "Block Copolymer Micelles for Photonic Fluids and Crystals”, ACS Nano, 2018, 12, 3149–3158.

E. Kontturi, P. Laaksonen, M. Linder, Nonappa, A.H. Gröschel, O. Rojas, O. Ikkala*, “Novel materials through assembly of nanocelluloses”, Adv. Mater., 2018, 1703779.

A.H. Gröschel*, A. Walther, T.I. Löbling, F.H. Schacher, H. Schmalz, A.H.E. Müller*, “Guided hierarchical co-assembly of soft patchy nanoparticles”, Nature, 2013, 503, 247–251.

M. Moritz, T. Verho, J. Sorvari, V. Liljestrom, M. Kostiainen, A.H. Gröschel*, O. Ikkala*, “Toughness and Fracture Properties in Nacre-Mimetic Clay/Polymer Nanocomposites, Nanocomposites, Adv. Funct. Mater., 2017, 27, 1605378.

T.I. Löbling, O.V. Borisov, J. Haataja, O. Ikkala*, A.H. Gröschel*, A.H.E. Müller*, “Rational design of ABC triblock terpolymer solution nanostructures with controlled patch morphology”, Nat. Commun., 2016, 7:12097.

T.I. Löbling, J. Haataja, C. Synatschke, F.H. Schacher, M. Förtsch, A. Hanisch, A.H. Gröschel*, A.H.E. Müller*, Hidden structural features of multicompartment micelles revealed by cryogenic transmission electron tomography, ACS Nano, 2014, 8, 11330–11340.

A.H. Gröschel*, A. Walther, J. Schmelz, A. Hanisch, H. Schmalz, A.H.E. Müller*, “Facile, solution-based synthesis of soft, nanoscale Janus particles with tunable Janus balance”, J. Am. Chem. Soc., 2012, 134, 13850–13860.

A.H. Gröschel, F.H. Schacher, H. Schmalz, O.V. Borisov, E.B. Zhulina, A. Walther*, A.H.E. Müller*, “Precise hierarchical self-assembly of multicompartment micelles”, Nat. Commun., 2012, 3, 710–717