Nanoscience Center

Nanoscience seminars

Seminars are arranged during the terms on weekly bases on Friday afternoons at 1 o'clock with coffee, talk starts 13:15 in YN121 in NSC. Welcome!

October 2nd


Mikhail Kuklin
University of Eastern Finland

Toward optimization of olefin polymerization: recent advances in Ziegler-Natta and metallocene homogeneous catalysis

Motivated by permanent need of polymeric materials, the topic is of high academic and industrial interest. Heterogeneous Ziegler-Natta catalytic systems play a dominant role in the industrial production of polyolefins, where inorganic magnesium dichloride support is a key component. As any crystalline material, MgCl2 surface contains imperfections in polymerization conditions which need to be taken into account to control the catalytic process. Therefore, we report an approach of systematic modeling structural imperfections. Relative stability of the perfect and defective catalytically active surfaces of the MgCl2 support and their stabilization upon incorporation of industrially relevant Lewis bases are discussed.
Representing an important extension of Ziegler-Natta approach, homogeneous catalysis by metallocenes offers production of polymers with tailored properties due to single-site nature of catalyst. However, unknown structure of cocatalyst, which is typically methylaluminoxane, and unclear effect of structural modifications of the metallocene catalyst limit control of the polymerization process. In here, we describe the proposed mechanisms of polymerization with two lately proposed models for MAO in terms of quantum-chemical calculations. Next, we highlight the significant role of structural modifications of the metallocenes in the catalytic process. Finally, we report the first investigation of quantitative structure-property relationship for propene polymerization, where steric and electronic parameters for catalysts are proposed and predictive models based on them are constructed.
The lecture summarizes the approaches developed to provide a solid foundation for optimization of catalytic processes.





12.8 Kinetic and dynamic responses of proteins utilizing time-resolved IR spectroscopy and single-molecule fluorescence spectroscopy Brigitte Buchli
University of Zürich

Oxidation of Cu3Au(111) surface with hyperthermal  oxygen molecular beam (H­­­OMB) examined with synchrotron radiation X-ray spectroscopy (SR-XPS)

Growing better graphene by first growing a better copper substrate

L arge-Area SINIS Tunnel Junctions for
Cooling Applications

Johannes Lehmuskoski

Kevin Roberts

Ville Valkiala


Nanomaster seminars

18.9 Nanomaster seminars
Protein purification of Agrobacterium tumefaciens phytochrome Agp1 and UV-vis spectroscopy analysis on bacteriophytochromes  Agp1 and DrBphP from Deinococcus Radiodurans

Friction Measurements of Natural Rock Surfaces

Sisi Xie


Joonas Pylväinen

2.10 Toward optimization of olefin polymerization: recent advances in Ziegler-Natta and metallocene homogeneous catalysis Mikhail Kuklin
University of Eastern Finland
Molecular Mechanisms of Metal Nanoparticle Synthesis and Final Particle Properties

Lauren Marbella
Univ. of Pittsburgh, USA

30.10 Andre Juffer Groenhof

The previous seminars in 2015 2014 2013 2012 2011 2010 2009 2008 2007


Seminars in:

Department of Physics Molecular Recognition

Contact Information


Nanoscience Center
P.O.Box 35
FI-40014 University of Jyväskylä
Tel: +358 50 3956 020
Fax: +358 14 617 412

Street address and office:
Survontie 9 C
40500 Jyväskylä