Yonsei University · Materials Science
Professor Jung Hyun Kim's research lab specializes in the development of advanced functional materials for energy and biomedical applications, with a strong focus on organic and hybrid nanomaterials. The lab pioneers innovative synthesis and processing techniques for conjugated polymers, carbon nanotubes, and graphene-based nanocomposites to enhance thermoelectric performance, enabling flexible, transparent, and efficient energy conversion devices. Additionally, the lab explores surface-modified nanoparticles for targeted drug delivery, emphasizing precise control over surface chemistry for improved biocompatibility and therapeutic efficacy. Their work bridges materials science, nanotechnology, and sustainable energy solutions.
Figures are computed from collected data and may differ slightly.
Our results indicate that a well-designed simple post-processing process can boost the efficiency of thermoelectric power generators made of conjugated polymer thin films.
This paper describes a sequential doping/dedoping method for the enhancement of thermoelectric properties of organic semiconductor that also permits the fabrication of transparent and flexible thermoelectric nanofilms. This method allows a precise control of oxidation level without deterioration of the film surface defects.
Synergic effects of conducting polymers, carbon nanotubes, and graphene result in the enhanced thermoelectric properties of nanocomposites.
The thermoelectric performance of poly(3,4-ethylenedioxythiophene) complexed with a poly(4-styrenesulfonic acid) (PEDOT:PSS) film was enhanced by a three-step process.
Abstract Surface‐modified nanoparticles have received much attention as drug carriers. Natural and synthetic polymers are used as the materials to prepare nanoparticles and the properties of these nanoparticles originate with these polymeric materials. In particular, these nanoparticles are modified for specific objectives. The surface characteristics of (shell) nanoparticles are more important than those of the core, because the shell layer directly contacts body fluids and organs. Generally, t
Abstract We have demonstrated that unsubstituted thiophene can be polymerized by Fe 3+ ‐catalyzed oxidative polymerization inside nanosized thiophene monomer droplets, that is, nanoreactors, dispersed in aqueous medium, which can be performed under acidic solution conditions with anionic surfactant. Besides, we proposed a synthetic mechanism for the formation of the unsubstituted polythiophene nanoparticles in aqueous medium. This facile method includes a FeCl 3 /H 2 O 2 (catalyst/oxidant) combi
Hydrophobic and comparatively thermally-stable poly(3,4-ethylenedioxythiophene), <i>i.e.</i>, poly(styrene sulfonate-<i>co</i>-vinyltrimethoxysilane) (PEDOT:P(SS-<i>co</i>-VTMS)) copolymer was successfully synthesized via the introduction of silane coupling agent into the PSS main chain to form P(SS-<i>co</i>-VTMS) copolymers. PSS and P(SS-<i>co</i>-VMTS) copolymers were successfully synthesized via radical solution polymerization, and PEDOT:P(SS-<i>co</i>-VTMS) was synthesized via Fe⁺-catalyzed
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