= Notice =
O Speaker: Prof. Myung-Han Yoon, GIST
O Title: Organic Bioelectronic Interfaces Based on Crystalline Conducting Polymer Films, Microfibers, and Fibrillar Hydrogels
O Date / Place : 2022/5/4 (Wednesday) 10:30 AM / Online(Zoom)
O Start Time: 10:30 AM
* The lecture will be given online ZOOM.
In this research, we developed organic bioelectronic interfaces based on highly crystalline poly(3,4-ethylenedioxythiophene):polystyrene sulfonate (PEDOT:PSS) films or microfibers to overcome the trade-off between electrical/electrochemical performance and long-term stability in water. Crystalline PEDOT:PSS films exhibit excellent electrical/electrochemical/optical properties, long-term aqueous stability, and good biocompatibility for primarily cultured cardiomyocytes and neurons over several weeks. Furthermore, they are successfully employed for high-performance multi-electrode arrays (MEAs) to record and stimulate the electrophysiological activities of primarily cultured cardiomyocytes and chicken retinae tissues. In parallel, we successfully developed crystalline PEDOT:PSS microfibers and PEDOT:PSS-incorporated fibrillar hydrogels for single-strand wearable electrochemical transistors and 3-D neuronal network reconstruct, respectively, for novel bioelectronic interfaces.
■ Short Bio:
Myung-Han Yoon received his B.S. (1999) in Chemistry and M.S. (2001) in Physical Chemistry at Seoul National University, South Korea. He studied “Organic Semiconductors and Dielectrics Based Thin Films Transistors” for his Ph.D. (2006) in Materials Chemistry with the guidance of Professor Tobin J. Marks at Northwestern University in US. In 2006, he moved to Department of Chemistry and Chemical Biology at Harvard University as a postdoctoral fellow and focused on neuronal electronic/microfluidic interfaces. He joined School of Materials Science and Engineering, Gwangju Institute of Science and Technology (GIST) as a junior faculty member in 2010, and was promoted to an associate professor in 2015 and a full professor in 2018. He published more than 100 SCI journal papers (SCOPUS; h-index 35, total citation 8911) and received Excellent Research Award from Minister of Science and ICT (South Korea; 2018), Excellent Research Award from Korean Polymer Society (2018) and Excellent Research Award from Korean Chemical Society (2018). His research interest covers “Developing Solution-Processable Functional Materials Based on Conducting Polymers, Sol-Gel Metal Oxides, Fibrillar Hydrogels for Biomedical/Bioelectrical Interfaces and Printable Flexible Electronics”