Search Results - "Kwak, Kyuju"

Electrochemistry of Atomically Precise Metal Nanoclusters by Kwak, Kyuju, Lee, Dongil

“…Thiolate-protected metal nanoparticles containing a few to few hundred metal atoms are interesting materials exhibiting unique physicochemical properties. They…”
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Ultrabright Luminescence from Gold Nanoclusters: Rigidifying the Au(I)–Thiolate Shell by Pyo, Kyunglim, Thanthirige, Viraj Dhanushka, Kwak, Kyuju, Pandurangan, Prabhu, Ramakrishna, Guda, Lee, Dongil

“…Luminescent nanomaterials have captured the imagination of scientists for a long time and offer great promise for applications in organic/inorganic…”
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A molecule-like PtAu24(SC6H13)18 nanocluster as an electrocatalyst for hydrogen production by Kwak, Kyuju, Choi, Woojun, Tang, Qing, Kim, Minseok, Lee, Yongjin, Jiang, De-en, Lee, Dongil

“…The theoretically predicted volcano plot for hydrogen production shows the best catalyst as the one that ensures that the hydrogen binding step is…”
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Interconversion between Superatomic 6‑Electron and 8‑Electron Configurations of M@Au24(SR)18 Clusters (M = Pd, Pt) by Kwak, Kyuju, Tang, Qing, Kim, Minseok, Jiang, De-en, Lee, Dongil

“…The exceptional stability of thiolate-protected Au25 clusters, [Au25­(SR)18]−, arises from the closure of superatomic electron shells, leading to a…”
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Energy Gap Law for Exciton Dynamics in Gold Cluster Molecules by Kwak, Kyuju, Thanthirige, Viraj Dhanushka, Pyo, Kyunglim, Lee, Dongil, Ramakrishna, Guda

“…The energy gap law relates the nonradiative decay rate to the energy gap separating the ground and excited states. Here we report that the energy gap law can…”
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Ionic Liquid of a Gold Nanocluster: A Versatile Matrix for Electrochemical Biosensors by Kwak, Kyuju, Kumar, S. Senthil, Pyo, Kyunglim, Lee, Dongil

“…Ionic liquids are room-temperature molten salts that are increasingly used in electrochemical devices, such as batteries, fuel cells, and sensors, where their…”
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Effects of Metal-Doping on Hydrogen Evolution Reaction Catalyzed by MAu24 and M2Au36 Nanoclusters (M = Pt, Pd) by Choi, Woojun, Hu, Guoxiang, Kwak, Kyuju, Kim, Minseok, Jiang, De-en, Choi, Jai-Pil, Lee, Dongil

“…This paper describes the effects of doped metals on hydrogen evolution reaction (HER) electrocatalyzed by atomically controlled MAu24 and M2Au36 nanoclusters,…”
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Over a 15.9% Solar-to-CO Conversion from Dilute CO2 Streams Catalyzed by Gold Nanoclusters Exhibiting a High CO2 Binding Affinity by Kim, Beomil, Seong, Hoeun, Song, Jun Tae, Kwak, Kyuju, Song, Hakhyeon, Tan, Ying Chuan, Park, Gibeom, Lee, Dongil, Oh, Jihun

“…Development of efficient and selective electrocatalysts is a key challenge to achieve an industry-relevant electrochemical CO2 reduction reaction (CO2RR) to…”
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Temperature-Dependent Absorption and Ultrafast Exciton Relaxation Dynamics in MAu24(SR)18 Clusters (M = Pt, Hg): Role of the Central Metal Atom by Thanthirige, Viraj Dhanushka, Kim, Minseok, Choi, Woojun, Kwak, Kyuju, Lee, Dongil, Ramakrishna, Guda

“…Temperature-dependent and ultrafast transient absorption measurements were carried out to probe the optical properties and exciton relaxation dynamics in…”
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Electrochemical Sensing Using Quantum-Sized Gold Nanoparticles by Kumar, S. Senthil, Kwak, Kyuju, Lee, Dongil

“…This paper describes the electrocatalytic activity of quantum-sized thiolate protected Au25 nanoparticles and their use in electrochemical sensing. The Au25…”
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Electrochemical Characterization of Water-Soluble Au25 Nanoclusters Enabled by Phase-Transfer Reaction by Kwak, Kyuju, Lee, Dongil

“…We report the synthesis and electrochemical characterization of a new water-soluble Au25 cluster protected with (3-mercaptopropyl)sulfonate. The presence of…”
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Efficient Oxygen Reduction Electrocatalysts Based on Gold Nanocluster-Graphene Composites by Kwak, Kyuju, Azad, Uday Pratap, Choi, Woojun, Pyo, Kyunglim, Jang, Mi, Lee, Dongil

“…This paper describes the preparation and electrocatalytic activity of nanocomposites composed of reduced graphene oxide and Au25 clusters. Well‐defined…”
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Tetrathiafulvalene-annulated [28]hexaphyrin(1.1.1.1.1.1): a multi-electron donor system subject to conformational control by Jana, Atanu, Ishida, Masatoshi, Cho, Kevin, Ghosh, Sudip Kumar, Kwak, Kyuju, Ohkubo, Kei, Sung, Young Mo, Davis, Christina M, Lynch, Vincent M, Lee, Dongil, Fukuzumi, Shunichi, Kim, Dongho, Sessler, Jonathan L

“…Tetrathiafulvalenes (TTF)-annulated [28]hexaphyrin affords an electron rich flexible π-conjugated system whose limiting conformations can be controlled through…”
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Electrochemical Characterization of Water-Soluble Au 25 Nanoclusters Enabled by Phase-Transfer Reaction by Kwak, Kyuju, Lee, Dongil

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Directional Electron Transfer in Chromophore-Labeled Quantum-Sized Au25 Clusters: Au25 as an Electron Donor by Devadas, Mary Sajini, Kwak, Kyuju, Park, Jung-Woo, Choi, Ji-Hwan, Jun, Chul-Ho, Sinn, Ekkehard, Ramakrishna, Guda, Lee, Dongil

“…Novel Au25(C6S)17PyS clusters (pyrene-functionalized Au25 clusters) showing interesting electrochemical and optical properties are synthesized and…”
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Effects of Metal-Doping on Hydrogen Evolution Reaction Catalyzed by MAu 24 and M 2 Au 36 Nanoclusters (M = Pt, Pd) by Choi, Woojun, Hu, Guoxiang, Kwak, Kyuju, Kim, Minseok, Jiang, De-En, Choi, Jai-Pil, Lee, Dongil

“…This paper describes the effects of doped metals on hydrogen evolution reaction (HER) electrocatalyzed by atomically controlled MAu and M Au nanoclusters,…”
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Evaluation of the electrochemical stability, interfacial reaction, and molecular behavior of ether-functionalized pyrrolidinium as novel electrolyte for lithium metal battery by quantum and molecular dynamics simulations by Nam, Kyungju, Baek, Jihye, Seo, Samuel, Kwak, Kyuju, Cha, JinHyeok

“…[Display omitted] •Providing a basis for the design and functionalization of potential ionic liquids using pyrrolidinium for lithium metal…”
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Dopant-Dependent Electronic Structures Observed for M2Au36(SC6H13)24 Clusters (M = Pt, Pd) by Kim, Minseok, Tang, Qing, Narendra Kumar, Alam Venugopal, Kwak, Kyuju, Choi, Woojun, Jiang, De-en, Lee, Dongil

“…Heteroatom doping is a powerful means to tune the optical and electronic properties of gold clusters at the atomic level. We herein report that doping a Au38…”
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Ultrafast Electron Dynamics in Thiolate-Protected Plasmonic Gold Clusters: Size and Ligand Effect by Shabaninezhad, Masoud, Abuhagr, Abubkr, Sakthivel, Naga Arjun, Kumara, Chanaka, Dass, Amala, Kwak, Kyuju, Pyo, Kyunglim, Lee, Dongil, Ramakrishna, Guda

“…The influence of passivating ligands on electron–phonon relaxation dynamics of the smallest-sized gold clusters was studied using ultrafast transient…”
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Selective determination of dopamine using quantum-sized gold nanoparticles protected with charge selective ligands by Kwak, Kyuju, Kumar, S Senthil, Lee, Dongil

“…We report here the selective determination of dopamine (DA) using quantum-sized gold nanoparticles coated with charge selective ligands. Glutathione protected…”
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