Hyotcherl Ihee

A Photoconductive Covalent Organic Framework: Self-Condensed Arene Cubes Composed of Eclipsed 2D Polypyrene Sheets for Photocurrent Generation (2009)

Wan, Shun, Guo, Jia, Kim, Jangbae, Ihee, Hyotcherl, Jiang, Donglin

On again, off again: A pyrene-based covalent organic framework (see structure: blue pyrene, white B, red O) facilitates exciton migration and carrier transportation, harvests visible-light photons,...

7 Protein–Ligand Interaction Probed (2009)

Time-resolved Crystallography, Marius Schmidt, Hyotcherl Ihee, Reinhard Pahl, Vukica Srajer

Time-resolved (TR) crystallography is a unique method for determining the structures of intermediates in biomolecular reactions. The technique reached its mature stage with the development of the...

Noncovalently Netted, Photoconductive Sheets with Extremely High Carrier Mobility and Conduction Anisotropy from Triphenylene-Fused Metal Trigon Conjugates (2009)

Chen, Long, Kim, Jangbae, Ishizuka, Tomoya, Honsho, Yoshihito, Saeki, Akinori, Seki, Shu, ...

Supramolecular assembly of small molecules via noncovalent interaction is useful for bottom-up construction of well-defined macroscopic structures. This approach is attracting increasing interest due...

Creating Well-Defined Hot Spots for Surface-Enhanced Raman Scattering by Single-Crystalline Noble Metal Nanowire Pairs (2009)

Kang, Taejoon, Yoon, Ilsun, Jeon, Ki-Seok, Choi, Wonjun, Lee, Yonghoon, Seo, Kwanyong, ...

Well-defined surface-enhanced Raman scattering (SERS) active systems were fabricated by single-crystal line noble metal nanowires. Crossed and parallel nanowire pairs were constructed by using a...

Ultrafast electron diffraction (2008)

Ihee, Hyotcherl

NOTE: Text or symbols not renderable in plain ASCII are indicated by [...]. Abstract is included in .pdf document. Molecular dynamics is now routinely studied on femtosecond time scales using various...

Folding Dynamics of Ferrocytochrome c in a Denaturant-Free Environment Probed by Transient Grating Spectroscopy (2008)

Choi, Jungkweon, Jung, Yang Ouk, Lee, Jae Hyuk, Yang, Cheolhee, Kim, Bongsoo, Ihee, Hyotcherl

Returning to the fold: The folding reaction of CO-bound cytochrome c (CytC-CO), initiated by the photodissociation of the CO ligand, is investigated by using transient grating (TG) spectroscopy....

Liquid Crystalline Peptide Nanowires (2007)

Han, Tae Hee, Kim, Jangbae, Park, Ji Sun, Park, Chan Beum, Ihee, Hyotcherl, Kim, Sang Ouk

We thank Dr C. M. Koo and Prof. D. G. Churchill for helpful discussions, and M. J. Woo for assisting with the powder diffractometer system. This work was supported by the Korea Research Foundation...

Density functional and ab initio studies on structures and energies of the ground state of CrCO. (2007)

Lee, Yoon Sup, Kim, Joonghan, Ihee, Hyotcherl

CrCO was studied using density functional theory (DFT) and ab initio methods. We obtained the two-dimensional potential energy surface (PES), geometry, and vibrational frequencies for CrCO in a...

Ultrafast diffraction and structural dynamics: The nature of complex molecules far from equilibrium (2001)

Ruan, Chong-Yu, Lobastov, Vladimir A., Srinivasan, Ramesh, Goodson, Boyd M., Ihee, Hyotcherl, Zewail, Ahmed H.

Studies of molecular structures at or near their equilibrium configurations have long provided information on their geometry in terms of bond distances and angles. Far-from-equilibrium structures are...

Ultrafast electron diffraction (2001)

Ihee, Hyotcherl

NOTE: Text or symbols not renderable in plain ASCII are indicated by [...]. Abstract is included in .pdf document. Molecular dynamics is now routinely studied on femtosecond time scales using various...

Ultrafast electron diffraction and direct observation of transient structures in a chemical reaction (1999)

Cao, Jianming, Ihee, Hyotcherl, Zewail, Ahmed H.

Ultrafast electron diffraction is a unique method for the studies of structural changes of complex molecular systems. In this contribution, we report direct ultrafast electron diffraction study of...

129Xe Nuclear magnetic resonance study on a solid-state defect in HZSM-5 zeolite (1995)

Ryoo, Ryong, Ihee, Hyotcherl, Kwak, Ja Hun, Seo, Gon, Liu, Shang-Bin

HZSM-5 and NaZSM-5 zeolites of various Si/Al ratios ranging from 20 to 130 have been characterized by Xe-129 nuclear magnetic resonance (NMR) spectroscopy at 296 K, following evacuation at...

Ultrafast electron diffraction and direct observation of transient structures in a chemical reaction

Cao, Jianming, Ihee, Hyotcherl, Zewail, Ahmed H.

Ultrafast electron diffraction is a unique method for the studies of structural changes of complex molecular systems. In this contribution, we report direct ultrafast electron diffraction study of...

Ultrafast diffraction and structural dynamics: The nature of complex molecules far from equilibrium

Ruan, Chong-Yu, Lobastov, Vladimir A., Srinivasan, Ramesh, Goodson, Boyd M., Ihee, Hyotcherl, Zewail, Ahmed H.

Studies of molecular structures at or near their equilibrium configurations have long provided information on their geometry in terms of bond distances and angles. Far-from-equilibrium structures are...

Protein kinetics: Structures of intermediates and reaction mechanism from time-resolved x-ray data

Schmidt, Marius, Pahl, Reinhard, Srajer, Vukica, Anderson, Spencer, Ren, Zhong, Ihee, Hyotcherl, ...

We determine the number of authentic reaction intermediates in the later stages of the photocycle of photoactive yellow protein at room temperature, their atomic structures, and a consistent set of...

Visualizing reaction pathways in photoactive yellow protein from nanoseconds to seconds

Ihee, Hyotcherl, Rajagopal, Sudarshan, Šrajer, Vukica, Pahl, Reinhard, Anderson, Spencer, Schmidt, Marius, ...

Determining 3D intermediate structures during the biological action of proteins in real time under ambient conditions is essential for understanding how proteins function. Here we use time-resolved...

Ultrafast electron diffraction and direct observation of transient structures in a chemical reaction

Cao, Jianming, Ihee, Hyotcherl, Zewail, Ahmed H.

Ultrafast electron diffraction is a unique method for the studies of structural changes of complex molecular systems. In this contribution, we report direct ultrafast electron diffraction study of...

Ultrafast diffraction and structural dynamics: The nature of complex molecules far from equilibrium

Ruan, Chong-Yu, Lobastov, Vladimir A., Srinivasan, Ramesh, Goodson, Boyd M., Ihee, Hyotcherl, Zewail, Ahmed H.

Studies of molecular structures at or near their equilibrium configurations have long provided information on their geometry in terms of bond distances and angles. Far-from-equilibrium structures are...

Protein kinetics: Structures of intermediates and reaction mechanism from time-resolved x-ray data

Schmidt, Marius, Pahl, Reinhard, Srajer, Vukica, Anderson, Spencer, Ren, Zhong, Ihee, Hyotcherl, ...

We determine the number of authentic reaction intermediates in the later stages of the photocycle of photoactive yellow protein at room temperature, their atomic structures, and a consistent set of...

Visualizing reaction pathways in photoactive yellow protein from nanoseconds to seconds

Ihee, Hyotcherl, Rajagopal, Sudarshan, Šrajer, Vukica, Pahl, Reinhard, Anderson, Spencer, Schmidt, Marius, ...

Determining 3D intermediate structures during the biological action of proteins in real time under ambient conditions is essential for understanding how proteins function. Here we use time-resolved...

Spatiotemporal reaction kinetics of an ultrafast photoreaction pathway visualized by time-resolved liquid x-ray diffraction

Kim, Tae Kyu, Lorenc, Maciej, Lee, Jae Hyuk, Lo Russo, Manuela, Kim, Joonghan, Cammarata, Marco, ...

We have studied the reaction dynamics for HgI2 in methanol by using time-resolved x-ray diffraction (TRXD). Although numerous time-resolved spectroscopic studies have provided ample information about...