Yonsei University · Engineering
Professor Jiwon Kim's research lab specializes in the design, synthesis, and characterization of advanced nanomaterials for sustainable energy and optoelectronic applications. Key research directions include the development of perovskite nanocrystals and quantum dots for high-efficiency lighting and photovoltaic devices, as well as the creation of functional carbon materials—particularly mesoporous carbons and electrocatalysts—for electrochemical processes such as methane oxidation and energy conversion. The lab combines ultrafast spectroscopy, computational modeling, and materials engineering to understand and optimize carrier dynamics and surface reactivity in nanomaterials.
Figures are computed from collected data and may differ slightly.
Pharmacokinetic (PK) evaluation of nanomaterials are crucial for further clinical development of imaging nanomaterials. In spite of huge advances in nanoparticle-based biomedical research, PK assessment typically requires substantial resources. Here, we show a simple, inexpensive, and yet precise analytical method applicable to the PK interrogation of gold nanoparticles (AuNPs) in the body. We have developed a UV-vis spectroscopic technique that utilizes mechanochemical treatments to separate Au
Transition metal layered double hydroxides (LDHs) are often hybridized with conductive materials for supercapacitor electrodes to facilitate charge transport. Although diverse forms of LDH hybridized carbon electrodes have been designed, it has not yet been systematically studied how morphology and composition simultaneously affect the performance of supercapacitors. Herein, we synthesize LDHs grown on nitrogen-doped porous carbon (NPC) as hybrid battery-like supercapacitor electrodes via both e
Sub-<i>m</i>-benziporphyrins were synthesized by Pd-catalyzed cross-coupling of <i>α</i>,<i>α</i>'-diboryl-<i>m</i>-benzitripyrrane with 9,10-bis(1,1-dibromomethylenyl)anthracene. Reaction of sub-<i>m</i>-benziporphyrin with PhBCl<sub>2</sub> and triethylamine gave its B-phenyl complex as a tetracoordinate nonaromatic B<sup>III</sup> complex. In contrast, the reaction with BBr<sub>3</sub> and triethylamine furnished a neutral B<sup>III</sup> porphyrinoid with a planar and triangular coordination
본 연구에서는 대면적 나노 금속 격자형 편광 필름 제작에서 증착 두께에 따른 광 특성 연구를 수행하였다. 나노 금속 격자형 편광필름은 PET(Polyethylene phthalate)기판 위에 알루미늄 선 격자 구조로 구성된다. 본 연구에서는 대면적 편광필름 제작을 위한 증착공정을 통한 금속 격자 형성을 목표로 하였으며, 금속 격자형 편광 필름 제작에 있어 최적의 투과율과 소광비를 가지는 금속 박막 형성 조건을 도출하였다. 최적화 공정에 의해 나노 금속 격자형 편광필름은 140 nm 주기, 70 nm 선폭, 70 nm의 금속층 높이를 가지는 금속 격자 구조로 제작 되었다. 분석결과 600 nm 파장에서 80% 이상의 최고 투과율 및 <TEX>$10^6$</TEX> 이상의 소광비를 가지는 나노 금속 격자 편광필름의 높은 광 특성을 확인하였다. In this study, we demonstrate the change of optical characteristic by thickness
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