Search Results - "Kim, Joonghan"
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Filming ultrafast roaming-mediated isomerization of bismuth triiodide in solution
Published in Nature communications (05-08-2021)“…Roaming reaction, defined as a reaction yielding products via reorientational motion in the long-range region (3 – 8 Å) of the potential, is a relatively…”
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Volume-conserving trans–cis isomerization pathways in photoactive yellow protein visualized by picosecond X-ray crystallography
Published in Nature chemistry (01-03-2013)“…Trans -to- cis isomerization, the key reaction in photoactive proteins, usually cannot occur through the standard one-bond-flip mechanism. Owing to spatial…”
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Theoretical study on molecular properties of SbXn (X = F and Cl, n = 1–5) and SbXn− (X = F and Cl, n = 1–6) including spin–orbit coupling
Published in Bulletin of the Korean Chemical Society (01-07-2022)“…High‐level ab initio and density functional theory (DFT) calculations were performed to calculate the molecular properties of SbXn (X = F and Cl, n = 1–5) and…”
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Electronic and Structural Dynamics of Dicyanoaurate Trimer in Excited State
Published in The journal of physical chemistry. A, Molecules, spectroscopy, kinetics, environment, & general theory (15-08-2019)“…A trimer of dicyanoaurate has been studied as a model system of the covalent chemical bond formation. Here, we report the dynamics of dicyanoaurate trimer in…”
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Mapping the emergence of molecular vibrations mediating bond formation
Published in Nature (London) (25-06-2020)“…Fundamental studies of chemical reactions often consider the molecular dynamics along a reaction coordinate using a calculated or suggested potential energy…”
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Mechanistic Investigation of Thermal and Photoreactions between Boron and Silane
Published in The journal of physical chemistry. A, Molecules, spectroscopy, kinetics, environment, & general theory (07-09-2017)“…Density functional theory and high-level ab initio calculations were performed to elucidate the detailed reaction mechanism from B and SiH4 to a structure with…”
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Optical Kerr Effect of Liquid Acetonitrile Probed by Femtosecond Time-Resolved X‑ray Liquidography
Published in Journal of the American Chemical Society (08-09-2021)“…Optical Kerr effect (OKE) spectroscopy is a method that measures the time-dependent change of the birefringence induced by an optical laser pulse using another…”
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Extracting Kinetics and Thermodynamics of Molecules without Heavy Atoms via Time-Resolved Solvent Scattering Signals
Published in The journal of physical chemistry letters (06-04-2023)“…Time-resolved X-ray liquidography (TRXL) has emerged as a powerful technique for studying the structural dynamics of small molecules and macromolecules in…”
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Ab Initio Analysis of Auger-Assisted Electron Transfer
Published in The journal of physical chemistry letters (15-01-2015)“…Quantum confinement in nanoscale materials allows Auger-type electron–hole energy exchange. We show by direct time-domain atomistic simulation and analytic…”
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Ultrafast structural dynamics of in-cage isomerization of diiodomethane in solution
Published in Chemical science (Cambridge) (07-12-2020)“…Despite extensive studies on the isomer species formed by photodissociation of haloalkanes in solution, the molecular structure of the precursor of the isomer,…”
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Highly Conjugated Side-Chain-Substituted Benzo[1,2‑b:4,5‑b′]dithiophene-Based Conjugated Polymers for Use in Polymer Solar Cells
Published in Macromolecules (14-01-2014)“…A series of novel benzo[1,2-b:4,5-b′]dithiophene (BDT)-based conjugated polymers were synthesized using a Stille cross-coupling reaction. These polymers…”
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Dynamics of Local Chirality during SWCNT Growth: Armchair versus Zigzag Nanotubes
Published in Journal of the American Chemical Society (06-06-2012)“…We present an analysis of the dynamics of single-walled carbon nanotube (SWCNT) chirality during growth, using the recently developed local chirality index…”
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Theoretical Investigation of the Reaction Mechanism of the Photoisomerization of 1,2-Dihydro-1,2-azaborine
Published in Chemphyschem (08-06-2015)“…The photoisomerization of 1,2‐dihydro‐1,2‐azaborine was investigated by high‐level multireference ab initio and density functional theory calculations. The…”
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High electroluminescence efficiency and long device lifetime of a fluorescent green-light emitter using aggregation-induced emission
Published in Journal of industrial and engineering chemistry (Seoul, Korea) (25-07-2020)“…[Display omitted] Three bipolar materials, 4-(4,6-diphenyl-1,3,5-triazin-2-yl)-N,N-diphenylaniline (DPAT-Ph),…”
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Direct Observation of a Transiently Formed Isomer During Iodoform Photolysis in Solution by Time-Resolved X‑ray Liquidography
Published in The journal of physical chemistry letters (01-02-2018)“…Photolysis of iodoform (CHI3) in solution has been extensively studied, but its reaction mechanism remains elusive. In particular, iso-iodoform (iso-CHI2–I) is…”
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Organic–Inorganic Hybrid Device with a Novel Deep-Blue Emitter of a Donor–Acceptor Type, with ZnO Nanoparticles for Solution-Processed OLEDs
Published in Nanomaterials (Basel, Switzerland) (28-10-2022)“…Two new deep-blue emitters with bipolar properties based on an organoboron acceptor and carbazole donor were newly synthesized:…”
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TDDFT and MS‐CASPT2 Study of the Excited States of Para‐Methoxymethylcinnamate
Published in Bulletin of the Korean Chemical Society (01-04-2018)“…The vertical and adiabatic excitation energies of the ππ*, ππ*′, and nπ* states of the trans and cis isomers of para‐methoxymethylcinnamate (p‐MMC) were…”
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Synthesis and detailed spectroscopic characterization of various hydroxy-functionalized fluorescent chalcones: A combined experimental and theoretical study
Published in Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy (05-11-2015)“…[Display omitted] •Interpretations of IR and Raman spectra of hydroxyl-substituted chalcones.•Prepared hydroxyl-substituted chalcones as good semiconducting…”
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Reply to 'Contradictions in X-ray structures of intermediates in the photocycle of photoactive yellow protein'
Published in Nature chemistry (01-04-2014)Get full text
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