Juwon Oh
YOU?
Author Swipe
View article: High-efficiency multi-mode linear battery charger with adaptive current sensor for multiple energy harvesting systems
High-efficiency multi-mode linear battery charger with adaptive current sensor for multiple energy harvesting systems Open
With the increasing integration of energy-harvesting systems into low-power applications, the need for efficient and accurate battery-charging circuits has become critical. In such systems, fluctuating energy sources affect the stability a…
View article: Antiaromatic Nanographenes by BODIPY-Fusion Strategy
Antiaromatic Nanographenes by BODIPY-Fusion Strategy Open
The synthesis of antiaromatic molecules with intense near-infrared (NIR) absorption is challenging because of their inherently forbidden HOMO–LUMO transitions. In this research, we have synthesized anthracene-fused and anthanthrene-fused b…
View article: Janus‐Type Photophysics of Rotational Isomers in a Diphenylanthracene Dimer
Janus‐Type Photophysics of Rotational Isomers in a Diphenylanthracene Dimer Open
Organic molecular dimers serve as valuable model systems for manipulating and exploring interchromophore interactions. However, the structural flexibility introduced by linker or chromophore rotation gives rise to conformational isomers wi…
View article: Precise Internal Postsynthetic Oxygen-Doping of Metallonanographenes
Precise Internal Postsynthetic Oxygen-Doping of Metallonanographenes Open
Heteroatom doping has the potential to alter the electronic structure and optical properties of nanographenes, thereby expanding the scope of their utility in various applications. In this work we demonstrate a strategy to introduce an oxy…
View article: Methanol-Tolerant Pd-Co Alloy Nanoparticles on Reduced Graphene Oxide as Cathode Catalyst for Oxygen Reduction in Fuel Cells
Methanol-Tolerant Pd-Co Alloy Nanoparticles on Reduced Graphene Oxide as Cathode Catalyst for Oxygen Reduction in Fuel Cells Open
The design of efficient and cost-effective electrocatalysts to replace Pt in an oxygen reduction reaction (ORR) is crucial for advancing proton exchange membrane fuel cell (PEMFC) technologies. This study synthesized Pd-Co bimetallic alloy…
View article: Sub- <i>m</i> -benziporphyrin: a subcarbaporphyrinoid and its B <sup>III</sup> complex with an unprecedented planar tridentate 14π-aromatic network
Sub- <i>m</i> -benziporphyrin: a subcarbaporphyrinoid and its B <sup>III</sup> complex with an unprecedented planar tridentate 14π-aromatic network Open
Sub- m -benziporphyrins, nonaromatic and aromatic B III complexes were synthesized.
View article: m-Benzisubporphyrins: The First Subcarbaporphyrin and Its BIII Complex with An Unprecedented Planar Tridentate 14 π-Aromatic Network
m-Benzisubporphyrins: The First Subcarbaporphyrin and Its BIII Complex with An Unprecedented Planar Tridentate 14 π-Aromatic Network Open
m-Benzisubporphyrins were synthesized as the first example of subcarbaporphyrin s by Pd-catalyzed cross-coupling of α,α’-diboryl-m-benzitripyrrane with 9,10-bis(1,1-dibromomethylenyl)anthracene. Reaction of m-benzisubporphyrin with PhBCl2 …
View article: Inner-Bond-Cleavage Approach to Figure-Eight Macrocycles from Planar Aromatic Hydrocarbons
Inner-Bond-Cleavage Approach to Figure-Eight Macrocycles from Planar Aromatic Hydrocarbons Open
Figure-eight-shaped nonplanar π-systems adopt distinctive chiral D2-symmetric structures, which are ideal for realizing efficient circularly polarized luminescence (CPL). However, the short-step and enantioselective synthesis of figure-eig…
View article: Inner-bond-cleavage approach to figure-eight macrocycles from planar aromatic hydrocarbons
Inner-bond-cleavage approach to figure-eight macrocycles from planar aromatic hydrocarbons Open
Contemporary synthetic strategies in organic chemistry rely heavily on the stepwise formation of bonds between fragments of the target compound (‘bottom-up’ approach). Figure-eight aromatic macrocycles represent a considerable challenge fo…
View article: A Janus carbaporphyrin pseudo-dimer
A Janus carbaporphyrin pseudo-dimer Open
Carbaporphyrin dimers, investigated for their distinctive electronic structures and exceptional properties, have predominantly consisted of systems containing identical subunits. This study addresses the associated knowledge gap by focusin…
View article: Photophysical properties and excited-state dynamics of donor–acceptor–heavy-atom molecules and their application in triplet–triplet annihilation upconversion
Photophysical properties and excited-state dynamics of donor–acceptor–heavy-atom molecules and their application in triplet–triplet annihilation upconversion Open
A novel series of donor–acceptor–heavy-atom (D–A–H) molecules that simultaneously implement both photoinduced electron transfer and heavy atom effect strategies.
View article: V-Shaped Tröger Oligothiophenes Boost Triplet Formation by CT Mediation and Symmetry Breaking
V-Shaped Tröger Oligothiophenes Boost Triplet Formation by CT Mediation and Symmetry Breaking Open
A new family of molecules obtained by coupling Tröger's base unit with dicyanovinylene-terminated oligothiophenes of different lengths has been synthesized and characterized by steady-state stationary and transient time-resolved spectrosco…
View article: Inner-Bond Cleavage in Nanographenes: A Constructive Destruction Strategy for Facile Access to Molecules with Multiple Figure-Eight Structures
Inner-Bond Cleavage in Nanographenes: A Constructive Destruction Strategy for Facile Access to Molecules with Multiple Figure-Eight Structures Open
The elegant architectures of nonplanar π-systems, such as fullerene and corannulene, exhibit distinctive functionalities that have played a significant role in advancing science and technology. The current approach to synthesizing nonplana…
View article: CCDC 2217841: Experimental Crystal Structure Determination
CCDC 2217841: Experimental Crystal Structure Determination Open
An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available …
View article: Inner Bond Cleavage of Nanographenes: Rational Strategy for Creating and Integrating Figure-Eight Structures
Inner Bond Cleavage of Nanographenes: Rational Strategy for Creating and Integrating Figure-Eight Structures Open
The beautiful structures of conjugated -systems with three-dimensional shapes have stimulated the curiosity of scientists and contributed to the evolution of science and technology. However, the construction of such distorted structures by…
View article: Carrier and Phonon Dynamics in Multilayer WSe<sub>2</sub> Captured by Extreme Ultraviolet Transient Absorption Spectroscopy
Carrier and Phonon Dynamics in Multilayer WSe<sub>2</sub> Captured by Extreme Ultraviolet Transient Absorption Spectroscopy Open
Carrier and phonon dynamics in a multilayer WSe2 film are captured by extreme ultraviolet (XUV) transient absorption (TA) spectroscopy at the W N6,7, W O2,3, and Se M4,5 edges (30–60 eV). After the broadband optical pump pulse, the XUV pro…
View article: Carrier and Phonon Dynamics in Multilayer WSe2 captured by Extreme Ultraviolet Transient Absorption Spectroscopy
Carrier and Phonon Dynamics in Multilayer WSe2 captured by Extreme Ultraviolet Transient Absorption Spectroscopy Open
Carrier and phonon dynamics in a multilayer WSe2 film are captured by extreme ultraviolet (XUV) transient absorption (TA) spectroscopy at the W N6,7, W O2,3, and Se M4,5 edges (30-60 eV). After the broadband optical pump pulse, the XUV pro…
View article: Development and Validation of Korea Mindset Scale (K-MINDSET) for Elementary School Students
Development and Validation of Korea Mindset Scale (K-MINDSET) for Elementary School Students Open
This study aims to develop a new mindset scale with a valid and reliable integrated concept that complements Carol Dweck's mindset scale presented as a method of future education.The subjects of this study were 1,218 students from fourth t…
View article: A Pilot Study on the Anxiety Reduction Effect of Tension, Stress, and Trauma Releasing Exercises (TRE)
A Pilot Study on the Anxiety Reduction Effect of Tension, Stress, and Trauma Releasing Exercises (TRE) Open
The purpose of this study is to examine the principles and mechanisms of a unique exercise method known as Tension Stress Trauma Releasing Exercises (TRE) and to explore whether TRE relieves adult state anxiety.Physical tremors are general…
View article: Coupled valence carrier and core-exciton dynamics in <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:msub><mml:mi mathvariant="normal">WS</mml:mi><mml:mn>2</mml:mn></mml:msub></mml:math> probed by few-femtosecond extreme ultraviolet transient absorption spectroscopy
Coupled valence carrier and core-exciton dynamics in probed by few-femtosecond extreme ultraviolet transient absorption spectroscopy Open
Few-femtosecond extreme ultraviolet (XUV) transient absorption spectroscopy, performed with optical 500-1000-nm supercontinuum and broadband XUV pulses (30-50 eV), simultaneously probes dynamics of photoexcited carriers in WS2 at the W O3 …
View article: Table-top extreme ultraviolet second harmonic generation
Table-top extreme ultraviolet second harmonic generation Open
Second harmonic generation is demonstrated in the extreme ultraviolet with a table-top laser source.
View article: Coupled Valence Carrier and Core-Exciton Dynamics in WS$_{2}$ Probed by Attosecond Transient Absorption Spectroscopy
Coupled Valence Carrier and Core-Exciton Dynamics in WS$_{2}$ Probed by Attosecond Transient Absorption Spectroscopy Open
Attosecond transient absorption spectroscopy, performed with optical 500-1000 nm supercontinuum and broadband extreme ultraviolet (XUV) pulses (30-50 eV), simultaneously probes dynamics of photoexcited carriers in WS$_{2}$ at the W O$_3$ e…