16 Result(s)

Article

Capturing the generation and structural transformations of molecular ions

Molecular ions are ubiquitous and play pivotal roles^1–3 in many reactions, particularly in the context of atmospheric and interstellar chemistry^4–6. However, their structures and conformational transitions^7,8, pa...

Jun Heo, Doyeong Kim, Alekos Segalina, Hosung Ki, Doo-Sik Ahn, Seonggon Lee… in Nature (2024)

Article

Determining the charge distribution and the direction of bond cleavage with femtosecond anisotropic x-ray liquidography

Energy, structure, and charge are fundamental quantities characterizing a molecule. Whereas the energy flow and structure change in chemical reactions are experimentally characterized, determining the atomic c...

Jun Heo, Jong Goo Kim, Eun Hyuk Choi, Hosung Ki, Doo-Sik Ahn… in Nature Communications (2022)

Article

Author Correction: Map** the emergence of molecular vibrations mediating bond formation

Jong Goo Kim, Shunsuke Nozawa, Hanui Kim, Eun Hyuk Choi, Tokushi Sato, Tae Wu Kim… in Nature (2021)

Article

Filming ultrafast roaming-mediated isomerization of bismuth triiodide in solution

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 recently proposed reaction pathway and is now regarded ...

Eun Hyuk Choi, Jong Goo Kim, Jungmin Kim, Hosung Ki, Yunbeom Lee… in Nature Communications (2021)

Article

Ultrafast coherent motion and helix rearrangement of homodimeric hemoglobin visualized with femtosecond X-ray solution scattering

Ultrafast motion of molecules, particularly the coherent motion, has been intensively investigated as a key factor guiding the reaction pathways. Recently, X-ray free-electron lasers (XFELs) have been utilized...

Yunbeom Lee, Jong Goo Kim, Sang ** Lee, Srinivasan Muniyappan… in Nature Communications (2021)

Article

Ultrafast charge transfer coupled with lattice phonons in two-dimensional covalent organic frameworks

Covalent organic frameworks (COFs) have emerged as a promising light-harvesting module for artificial photosynthesis and photovoltaics. For efficient generation of free charge carriers, the donor–acceptor (D-A...

Tae Wu Kim, Sunhong Jun, Yoonhoo Ha, Rajesh K. Yadav… in Nature Communications (2019)

Article

Measurements of complex refractive index change of photoactive yellow protein over a wide wavelength range using hyperspectral quantitative phase imaging

A novel optical holographic technique is presented to simultaneously measure both the real and imaginary components of the complex refractive index (CRI) of a protein solution over a wide visible wavelength ra...

KyeoReh Lee, Youngmin Kim, JaeHwang Jung, Hyotcherl Ihee… in Scientific Reports (2018)

Article

Atomistic characterization of the active-site solvation dynamics of a model photocatalyst

The interactions between the reactive excited state of molecular photocatalysts and surrounding solvent dictate reaction mechanisms and pathways, but are not readily accessible to conventional optical spectros...

Tim B. van Driel, Kasper S. Kjær, Robert W. Hartsock… in Nature Communications (2016)

Article

Single-step fabrication of quantum funnels via centrifugal colloidal casting of nanoparticle films

Centrifugal casting of composites and ceramics has been widely employed to improve the mechanical and thermal properties of functional materials. This powerful method has yet to be deployed in the context of n...

** Young Kim, Valerio Adinolfi, Brandon R. Sutherland… in Nature Communications (2015)

Article

Ultrafast myoglobin structural dynamics observed with an X-ray free-electron laser

Light absorption can trigger biologically relevant protein conformational changes. The light-induced structural rearrangement at the level of a photoexcited chromophore is known to occur in the femtosecond tim...

Matteo Levantino, Giorgio Schirò, Henrik Till Lemke… in Nature Communications (2015)

Article

Conjugated organic framework with three-dimensionally ordered stable structure and delocalized π clouds

Covalent organic frameworks are a class of crystalline organic porous materials that can utilize π–π-stacking interactions as a driving force for the crystallization of polygonal sheets to form layered framewo...

Jia Guo, Yanhong Xu, Shangbin **, Long Chen, Toshihiko Kaji… in Nature Communications (2013)

Article

Simple super-resolution live-cell imaging based on diffusion-assisted Förster resonance energy transfer

Despite the recent development of several super-resolution fluorescence microscopic techniques, there are still few techniques that can be readily employed in conventional imaging systems. We present a very si...

Sangyeon Cho, Jaeduck Jang, Chaeyeon Song, Heeyoung Lee… in Scientific Reports (2013)