Physical Chemistry/ Nanotechnology

Topics and focal points

  • Teaching: Lectures on physical chemistry I and II and associated practical course, physical chemistry for biotechnology students, introduction to nanotechnology (Bachelor), lecture and practical course "Nanotechnology" in the Master's program

  • Research: Synthesis, functionalization and characterization of multifunctional, inorganic nanoparticles, including precious metal nanoparticles, magnetic nanoparticles, upconversion nanoparticles, silica, multinuclear and multiscale nanoparticles, investigation of nanoparticles with synchrotron radiation (X-ray microscopy, XMCD), ordered nanoparticle structures on planar and structured surfaces, interaction of nanoparticles with biological systems

Equipment

  • Scanning electron microscope Hitachi SU 5000 with EDX and STEM (together with Prof. Dr. Moneke and Prof. Dr. Will)
  • X-ray diffractometer with small-angle X-ray scattering and high-temperature flow cell Bruker D8 Advance Eco (together with Prof. Dr. F. Schael)
  • Fluorescence spectrometer Edinburgh Instruments FS5 with 980 nm laser for fluorescence and lifetime measurements on upconversion nanoparticles
  • UV-VIS-NIR absorption spectrometer Agilent CARY 5000
  • Dynamic light scattering and zeta potential measurements Malvern Zetasizer ZS Nano
  • Synthesis laboratory for the production and functionalization of inorganic nanoparticles

  • Differential scanning calorimetry

Selected publications

  • "Revealing the formation mechanism and band gap tuning of Sb2S3 nanoparticles", Joschko, M.; Fotue Wafo, F. Y.; Malsi, C.; Kisić, D.; Validžić, I. L. Graf, C., Beilstein J. Nanotechnol., 12, 1021-1033 (2021)
  • "Effect of Different Silica Coatings on the Toxicity of upconversion nanoparticles on RAW 264.7 macrophage cells", Kembuan, C.; Oliveira, H.; Graf, C.,. Beilstein J. Nanotechnol, 12, 35-48 (2021)
  • "Controlling the Interparticular Distances of Extended Non-Close-Packed Colloidal Monolayers", Schmudde, M.; Grunewald, C; Risse, T; Graf, C.; Langmuir, , 36, 17, 4827-4834 (2020)