Je Seung Lee
경희대학교 화학과 · 공학
이 교수의 연구실은 주로 이온 액체를 기반으로 한 고기능성 다공성 탄소 소재의 합성 및 응용을 중심으로 연구를 진행하고 있습니다. 특히, 고도로 균일한 다공구조를 가진 질소 도핑 탄소 재료를 비용 효율적이고 친환경적인 방법으로 제조하는 데에 초점을 맞추고 있으며, 에너지 저장, 가스 흡착, 센서 등 다양한 응용 분야에서의 응용 가능성을 탐색하고 있습니다. 또한 이온 액체 기반의 이온 도전성 겔 및 나노복합재료 개발을 통해 전기화학적 소자 및 생체센서 기술의 발전에도 기여하고 있습니다.
표시된 성과는 수집된 데이터 기준으로 산출되며, 일부 차이가 있을 수 있습니다.
An expedient, template-free, high-yield, and solventless route to nitrogen-rich micro- and mesoporous carbons is reported based on direct, atmospheric-pressure carbonization of task-specific ionic liquids bearing one or more nitrile side chains. The resulting textural properties (pore regime, surface area) are highly dependent upon the structural motifs of the ions comprising the corresponding parent ionic liquid, and uniform carbon films are routinely deposited with this novel methodology, high
A new strategy for the preparation of functional porous carbons is developed via direct, ambient-pressure, thermal pyrolysis of task-specific ionic liquids (ILs). The simple synthesis lies in the synergistic use of the negligible volatility of the ILs and incorporation of the crosslinkable nitrile groups in the anions. The resulting carbon materials at 800 °C retain an extremely high content of nitrogen (up to 18 at%). Carbon materials are central to many important applications because of their
A novel strategy for tailoring the adsorption and structural properties of ionic liquid derived carbons has been developed. By changing the carbonization temperature and ratios of ionic liquids (ILs) containing a cross-linkable anion, such as 1-butyl-3-methylimidazolium tricyanomethanide [BMIm][C(CN)(3)] and 1-ethyl-3-methylimidazolium tetracyanoborate [EMIm][B(CN)(4)], boron and nitrogen-rich carbons with slit-like pores and specific surface areas exceeding 500 m(2) g(-1) have been prepared. Fu
ADVERTISEMENT RETURN TO ISSUEPREVCommunicationNEXTCation Cross-Linked Ionic Liquids as Anion-Exchange MaterialsJe Seung Lee, Huimin Luo, Gary A. Baker, and Sheng Dai*View Author Information† Chemical Sciences Division and‡ Nuclear Science and Technology Division Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831*Corresponding author. E-mail: [email protected]Cite this: Chem. Mater. 2009, 21, 20, 4756–4758Publication Date (Web):September 28, 2009Publication History Received25 August 2009Re
A novel ionic mixture of an imidazolium-based room-temperature ionic liquid containing ethylene-oxide-functionalized phosphite anions is fabricated, which, when doped with lithium salt, self-assembles into a smectic-ordered ionic liquid crystal through Coulombic interactions between the ion species. Interestingly, the smectic order in the ionic-liquid-crystal ionogel facilitates ionic transport.
This study proposes a non-enzymatic glucose sensor fabricated by synthesizing high-purity TiO<sub>2</sub> nanoparticles in thermal plasma and depositing it directly on a substrate and then depositing chitosan-polypyrrole (CS-PPy) conductive polymer films by electrochemical method. The structural properties of the deposited TiO<sub>2</sub> nanoparticles were analyzed by X-ray diffraction (XRD) and dynamic light scattering (DLS) system. The chemical composition and structural properties of the TiO
Bioelectrodes mediated by metal oxide nanoparticles have facilitated the development of new sensors in medical diagnosis. High-purity TiO<sub>2</sub> nanoparticles (NPs) were synthesized through thermal plasma and deposited directly on an interdigitated electrode. The surface of the TiO<sub>2</sub>-deposited electrode was activated with (3-aminopropyl) triethoxysilane (APTES) followed by fixing the single-stranded probe deoxyribonucleic acid (DNA) to fabricate the DNA biosensor. The structural p
