Doctoral Researchers

A3: Gyusang Yi

Phone: +49 351 4658-542
Office: Leibniz-Institut für Polymerforschung Dresden e. V.,
Room: W405

During my master’s studies, I got interested in nanoparticles, especially electrical properties of them. I hope to do more interdisciplinary research about it. Thanks to the RTG program, I got great opportunities to achieve my goal. During my PhD, I will synthesize nanoparticles, assemble those into pre-defined arrangement structures, and measure their electrical properties.

Project Topic: Understanding charge transport in hybrid colloidal nanowires

Supervisors: Andreas Fery, Artur Erbe

Former research of fabrication of conductive assembly of metallic nanoparticles such as gold or silver nanoparticles largely relied on the sintering process, which became necessary in order to remove insulating (organic) stabilizers from the metallic nanoparticle surface.1.2 This adds an energy-consuming step to the overall process and also leads to a loss of the potential for re-configurability. On the other hand, assembly of metallic nanoparticles have a potential to obtain anisotropic conductivity2 while the organic shell may provide flexibility with regard to external stimuli such as bending or strain.3,4 Therefore, the core-shell particles with conductive polymer shells and metallic nanoparticle cores provide tempting prospects for next-generation electronic materials.

In this work, I will synthesize core-shell particles with the gold nanoparticle cores and the polyaniline shells. Particles will be assembled as single lines using PDMS wrinkled templates. The electrical properties of single lines, especially charge transport mechanism, will be investigated in detail.

Fig 1. Core-shell nanoparticles of gold-polyaniline

Fig. 2. Scheme of confinement assembly (Reproduced from D. Schletz et al.5 (2021))

  1. Colloids Surf. A Physicochem. Eng. Asp. 358, 35 (2010)
  2. Nanoscale, 14, 14956 (2022)
  3. Polym Int, 70, 437 (2021)
  4. Sci Rep 7, 41981 (2017)
  5. Optical Mater., 9, 2001983 (2021)

Master of Science in chemistry

Friedrich-Alexander-Universität Erlangen-Nürnberg, Germany

  • Thesis: Quantum Dot Tandem Solar Cell with High Open Circuit Voltage (Voc)
08/2015 – 05/2016

Exchange Student

University of Central Oklahoma (Edmond, USA)

03/2010 – 02/2017

Bachelor of Science in chemistry

Hanyang University (Ansan. Republic of Korea)