Dr. Kaloian Koynov

Kaloian Koynov studied physics at the Sofia University and received his diploma in 1993. In 1997 he received his PhD in Physics from the same university for a work on “Cascaded nonlinear optical processes and their applications for all-optical switching” in the group of Solomon Saltiel. Then he spent a postdoctoral year in the Institute for Fundamental Electronics, University Paris Sud, France, studying grating couplers into semiconductor waveguides. In 2000 he joined the group of Wolfgang Knoll at the MPI for Polymer Research as a postdoc and EU Marie Curie Fellow. Here he worked with Christoph Bubeck on the nonlinear optical properties of thin films of conjugated polymers. Since 2006 he is a Group Leader in the group of Hans-Jürgen Butt at the MPI for Polymer Research.

Research Interests

The research of Kaloian Koynov is focused on the development and application of Fluorescence Correlation Spectroscopy (FCS) based methods for addressing specific questions in polymer, colloid and interface science. He is operating an advanced FCS Lab, in which commercial and home-build setups are combined in order to achieve unique features. These include the possibility to study flows near solid surfaces with total internal reflection fluorescence cross-correlation spectroscopy (TIR-FCCS) or the possibility for studies in blood with near infrared FCS. In addition, K. Koynov is responsible for the service laboratory “Mechanical and Dielectric Spectroscopy” at the MPI-P.

Selected Publications

Negwer, I.; Best, A.; Schinnerer, M.; Schaefer, O.; Capeloa, L.; Wagner, M.; Schmidt, M.; Mailänder, V.; Helm, M.; Barz, M. et al.; Butt, H. J.; Koynov, K.: Monitoring drug nanocarriers in human blood by near-infrared fluorescence correlation spectroscopy. Nature Communications 9, 5306 (2018)
Hesami, M.; Steffen, W.; Butt, H.-J.; Floudas, G.; Koynov, K.: Molecular Probe Diffusion in Thin Polymer Films: Evidence for a Layer with Enhanced Mobility Far above the Glass Temperature. ACS Macro Letters 7 (4), pp. 425 - 430 (2018)
Xie, J.; Doroshenko, M.; Jonas, U.; Butt, H.-J.; Koynov, K.: Temperature-Controlled Diffusion in PNIPAM-Modified Silica Inverse Opals. ACS Macro Letters 5 (2), pp. 190 - 194 (2016)
Schaeffel, D.; Yordanov, S.; Schmelzeisen, M.; Yamamoto, T.; Kappl, M.; Schmitz, R.; Dünweg, B.; Butt, H.-J.; Koynov, K.: Hydrodynamic boundary condition of water on hydrophobic surfaces. Physical review E 87 (5), 051001 (2013)
Koynov, K.; Butt, H.-J.: Fluorescence correlation spectroscopy in colloid and interface science. Current Opinion in Colloid & Interface Science 17 (6), pp. 377 - 387 (2012)
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