| Title | Organic photonics: from light-emitting diode toward biomedical applications | ||
| Speaker | Dr. Kwon-Hyeon Kim, Research fellow in Wellman Center for Photomedicine at Harvard Medical School/Massachusetts General Hospital
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| Date | Thursday, March 11th, 2021 | Time | 10:00 ~
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| Venue | 온라인 강의 (https://snu-ac-kr.zoom.us/j/
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| Abstract | Organic photonic materials are indispensable in the display industry as well as biomedical science. Ease of modification and diverse structures of organic molecules allow various functions and emission properties according to applications. Devices using organic photonic materials have advantages in terms of mechanical flexibility, ease of fabrications, and biocompatibility. The organic light-emitting diode (OLED) is one of the promising applications using organic photonic materials. It has been known for decades that the emitting dipole orientation of emitting dyes influences the efficiency of OLEDs. However, the emitting dipole orientation of emitters, especially phosphorescent dyes, has been less studied due to the lack of an apparent driving force for aligning the dye molecules. In the fields of cell biology and medical science, optical luminescent probes in lasing or stimulated regime have recently received great interest. Lasing emission of luminescent probe improves spectral sharpness and contrast, demonstrating enhanced brightness, multiplexing capability, and imaging resolution. This presentation talks about 1) the emitting dipole orientation of phosphorescent dye in an OLED and 2) bio-integrated microlasers. I will first present the origin and control of the orientation of phosphorescent dyes and the record-breaking efficiency OLEDs with newly developed emitters. Second, I will present microbead lasers for biomedical applications.
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| Host | Prof. Min Sang Kwon (880-8326) |