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Kwon, Oh Hoon (권오훈)

Department
Department of Chemistry(화학과)
Website
http://femtokid.wix.com/ulsan-lab
Lab
Ultrafast Laser Spectroscopy and Nano-microscopy Lab. (초고속 레이저 분광학 및 전자현미경학 연구실)
Research Keywords
초고속 전자현미경학, 초고속 레이저 분광학, 구조 동역학, 반응 동역학, Femtochemistry/biology, 4D electron microscopy, structural dynamics
Research Interests
The recent emergence of 4D electron microscopy, which uniquely combines the ultrafast time resolution of femtochemistry and ultrafine spatial resolution of TEM, has opened a new era for direct visualization of atomic and molecular motions of matter. Yet, because of limited function, observations have been made to periodic (crystalline) atomic and molecular architectures and non-periodic (amorphous) objects of hundreds nanometers or bigger. In the ULSaN lab, we develop an advanced ultrafast electron microscope with invulnerable capabilities that can circumvent present limitations and promote the new methodology to a powerful platform to directly image molecular and collective motions, dissect fundamental phenomena, and deliver new concepts for specific control and global function of matter.
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Issue DateTitleAuthor(s)TypeViewAltmetrics
2023-09Quantifying the Ground-State Hydrogen-Bond Formation of a Super-Photoacid by Inspecting Its Excited-State DynamicsChoi, Ye-Jin; Nho, Hak-Won; Kim, Ye-Jin, et alARTICLE273 Quantifying the Ground-State Hydrogen-Bond Formation of a Super-Photoacid by Inspecting Its Excited-State Dynamics
2023-09Fluorination-Induced Conversion of the Quasi- to the Normal Interchain Packing in Push–Pull Conjugated Polymer AggregatesYun, Hyuk Gu; Nho, Hak-Won; Han, Se Gyo, et alARTICLE439 Fluorination-Induced Conversion of the Quasi- to the Normal Interchain Packing in Push–Pull Conjugated Polymer Aggregates
2023-07Pt cocatalyst morphology on semiconductor nanorod photocatalysts enhances charge trapping and water reductionPark, Bumjin; Park, Won-Woo; Choi, Ji Yong, et alARTICLE599 Pt cocatalyst morphology on semiconductor nanorod photocatalysts enhances charge trapping and water reduction
2023-04Synthesis of Thermally Stable and Highly Luminescent Cs5Cu3Cl6I2 Nanocrystals with Nonlinear Optical ResponseJang, Changhee; Kim, Kangyong; Nho, Hak‐Won, et alARTICLE431 Synthesis of Thermally Stable and Highly Luminescent Cs5Cu3Cl6I2 Nanocrystals with Nonlinear Optical Response
2023-04Tailoring Two-Dimensional Matter Using Strong Light–Matter InteractionsKim, Ye-Jin; Lee, Yangjin; Choi, WonJae, et alARTICLE726 Tailoring Two-Dimensional Matter Using Strong Light–Matter Interactions
2023-04A newly designed benzodithiophene building block: tuning of torsional barrier for non-halogenated and non-aromatic solvent-processible photovoltaic polymersCho, Hye Won; Jeong, Sang Young; Wu, Ziang, et alARTICLE1037 A newly designed benzodithiophene building block: tuning of torsional barrier for non-halogenated and non-aromatic solvent-processible photovoltaic polymers
2023-03Simplified Y6‐Based Nonfullerene Acceptors: In‐Depth Study on Molecular Structure–Property Relation, Molecular Dynamics Simulation, and Charge DynamicsYuk, Dohun; Jee, Min Hun; Koh, Chang Woo, et alARTICLE556 Simplified Y6‐Based Nonfullerene Acceptors: In‐Depth Study on Molecular Structure–Property Relation, Molecular Dynamics Simulation, and Charge Dynamics
2023-02Morphologically Controlled Efficient Air-Processed Organic Solar Cells from Halogen-Free Solvent SystemRasool, Shafket; Kim, Jae Won; Cho, Hye Won, et alARTICLE982 Morphologically Controlled Efficient Air-Processed Organic Solar Cells from Halogen-Free Solvent System
2023-01Femtosecond-Resolved Imaging of a Single-Particle Phase Transition in Energy-Filtered Ultrafast Electron MicroscopyKim, Ye-Jin; Nho, Hak-Won; Ji, Shaozheng, et alARTICLE253 Femtosecond-Resolved Imaging of a Single-Particle Phase Transition in Energy-Filtered Ultrafast Electron Microscopy
2022-12Elucidating the Chain-Extension Effect on the Exciton-Dissociation Mechanism through an Intra- or Interchain Polaron-Pair State in Push–Pull Conjugated PolymersLee, Dongki; Han, Se Gyo; Kim, Hyojung, et alARTICLE501 Elucidating the Chain-Extension Effect on the Exciton-Dissociation Mechanism through an Intra- or Interchain Polaron-Pair State in Push–Pull Conjugated Polymers
2022-12Phase rearrangement for minimal exciton loss in a quasi-2D perovskite toward efficient deep-blue LEDs via halide post-treatmentShin, Yun Seop; Yoon, Yung Jin; Adhikari, Aniruddha, et alARTICLE506 Phase rearrangement for minimal exciton loss in a quasi-2D perovskite toward efficient deep-blue LEDs via halide post-treatment
2022-10Manipulated Interface for Enhanced Energy Cascade in Quasi-2D Blue Perovskite Light-Emitting DiodesShin, Yun Seop; Park, Chan Beom; Adhikari, Aniruddha, et alARTICLE708 Manipulated Interface for Enhanced Energy Cascade in Quasi-2D Blue Perovskite Light-Emitting Diodes
2022-07Verifying the relationships of defect site and enhanced photocatalytic properties of modified ZrO2 nanoparticles evaluated by in-situ spectroscopy and STEM-EELSKim, Hyun Sung; Kim, Ye-Jin; Son, Ye Rim, et alARTICLE536 Verifying the relationships of defect site and enhanced photocatalytic properties of modified ZrO2 nanoparticles evaluated by in-situ spectroscopy and STEM-EELS
2022-04Acid-base reaction of a super‐photoacid with a cooperative amide hydrogen‐bonded chainChoi, Ye‐Jin; Kim, Heesu; Kwon, Oh HoonARTICLE589 Acid-base reaction of a super‐photoacid with a cooperative amide hydrogen‐bonded chain
2022-04Molecular design strategy for realizing vectorial electron transfer in photoelectrodesRoh, Deok-Ho; Park, Jun-Hyeok; Han, Hyun-Gyu, et alARTICLE220 Molecular design strategy for realizing vectorial electron transfer in photoelectrodes
2022-02Ultrafast Excited-State Proton Transfer of a Cationic Superphotoacid in a Nanoscopic Water PoolNho, Hak-Won; Adhikari, Aniruddha; Kwon, Oh HoonARTICLE436 Ultrafast Excited-State Proton Transfer of a Cationic Superphotoacid in a Nanoscopic Water Pool
2022-01Intrachain photophysics of a donor–acceptor copolymerNho, Hak-Won; Park, Won-Woo; Lee, Byongkyu, et alARTICLE480 Intrachain photophysics of a donor–acceptor copolymer
2021-12Viable Mixing Protocol Based on Formulated Equations for Achieving Desired Molecular Weight and Maximal Charge Separation of Photovoltaic PolymerLee, Byongkyu; Kim, Seoyoung; Nho, Hak‐Won, et alARTICLE487 Viable Mixing Protocol Based on Formulated Equations for Achieving Desired Molecular Weight and Maximal Charge Separation of Photovoltaic Polymer
2021-12Cathodoluminescence in Ultrafast Electron MicroscopyKim, Ye-Jin; Kwon, Oh HoonARTICLE487 Cathodoluminescence in Ultrafast Electron Microscopy
2021-11Optimal Length of Hybrid Metal–Semiconductor Nanorods for Photocatalytic Hydrogen GenerationChoi, Ji Yong; Park, Won-Woo; Park, Bumjin, et alARTICLE499 Optimal Length of Hybrid Metal–Semiconductor Nanorods for Photocatalytic Hydrogen Generation

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