Kang Min Ok
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View article: CCDC 2371237: Experimental Crystal Structure Determination
CCDC 2371237: 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: Structure–property relationships in noncentrosymmetric solid‐state materials
Structure–property relationships in noncentrosymmetric solid‐state materials Open
Noncentrosymmetric (NCS) solid‐state materials play a vital role in modern photonic and optoelectronic technologies attributable to their ability to exhibit second‐order nonlinear optical (NLO) phenomena such as second‐harmonic generation …
View article: Exceptional Second Harmonic Generation in Ultraviolet Nonlinear Optical Oxyfluoroniobate Crystals via Structural Fingerprint Optimization of Polar Chains
Exceptional Second Harmonic Generation in Ultraviolet Nonlinear Optical Oxyfluoroniobate Crystals via Structural Fingerprint Optimization of Polar Chains Open
Partial fluorination of oxides has positioned oxyfluorides as a promising class of nonlinear optical (NLO) materials owing to their balanced optical properties. However, effectively arranging optical chromophores to achieve strong optical …
View article: Dual Chemical Scissors Strategy Enables 1D Antimony Selenates with Ultraviolet Nonlinear Optical Properties
Dual Chemical Scissors Strategy Enables 1D Antimony Selenates with Ultraviolet Nonlinear Optical Properties Open
The rational, function‐driven design of advanced inorganic functional materials remains a significant challenge, primarily attributed to their inherently complex and highly connected 3D frameworks of most oxide‐based systems. Herein, we re…
View article: (<i>R</i>)‐ and (<i>S</i>)‐SbF<sub>3</sub>(C<sub>8</sub>H<sub>9</sub>NO<sub>3</sub>): Chiral Antimony‐Based Hybrid Materials with Enhanced Second‐Harmonic Generation and Birefringence
(<i>R</i>)‐ and (<i>S</i>)‐SbF<sub>3</sub>(C<sub>8</sub>H<sub>9</sub>NO<sub>3</sub>): Chiral Antimony‐Based Hybrid Materials with Enhanced Second‐Harmonic Generation and Birefringence Open
Noncentrosymmetric (NCS) materials have garnered significant attention due to their unique second‐harmonic generation (SHG) properties, which are crucial for nonlinear optical (NLO) applications. However, achieving optimal SHG efficiency a…
View article: Spatially Resolved Observation of Ferroelectric‐to‐Paraelectric Phase Transition in a Two‐Dimensional Halide Perovskite
Spatially Resolved Observation of Ferroelectric‐to‐Paraelectric Phase Transition in a Two‐Dimensional Halide Perovskite Open
2D halide perovskite ferroelectrics have garnered significant attention due to their potential applications and intriguing fundamental properties. However, their temperature‐dependent ferroelectric behaviors, particularly at the nanoscale,…
View article: Giant Birefringence Enabled by the Highly Anisotropic Linear IX<sub>2</sub><sup>−</sup> (X = Cl, Br) Building Blocks
Giant Birefringence Enabled by the Highly Anisotropic Linear IX<sub>2</sub><sup>−</sup> (X = Cl, Br) Building Blocks Open
Birefringent crystals are essential for polarized optical devices, yet achieving large birefringence through rational design remains challenging. The key lies in constructing birefringence‐active groups (BAGs) with giant polarization aniso…
View article: Designed Metal‐Free Quasi‐1D Crystals with Giant Birefringence
Designed Metal‐Free Quasi‐1D Crystals with Giant Birefringence Open
Birefringence, a vital property of anisotropic crystals, is indispensable for advanced optical technologies. Quasi‐1D structures, with their inherent structural anisotropy, offer fertile ground for discovering materials with exceptional op…
View article: (NH <sub>4</sub> ) <sub>2</sub> Cd <sub>2</sub> Cl <sub>3</sub> F <sub>3</sub> and (NH <sub>4</sub> ) <sub>2</sub> Cd <sub>2</sub> Br <sub>3</sub> F <sub>3</sub> : The First Fluoride‐Containing d <sup>10</sup> Metal Mixed Halides Exhibiting Superior Ultraviolet Nonlinear Optical Properties
(NH <sub>4</sub> ) <sub>2</sub> Cd <sub>2</sub> Cl <sub>3</sub> F <sub>3</sub> and (NH <sub>4</sub> ) <sub>2</sub> Cd <sub>2</sub> Br <sub>3</sub> F <sub>3</sub> : The First Fluoride‐Containing d <sup>10</sup> Metal Mixed Halides Exhibiting Superior Ultraviolet Nonlinear Optical Properties Open
In the search for new ultraviolet (UV) nonlinear optical (NLO) materials, two novel cadmium mixed halide compounds, (NH 4 ) 2 Cd 2 Cl 3 F 3 and (NH 4 ) 2 Cd 2 Br 3 F 3 , are successfully synthesized via hydrothermal methods. These compound…
View article: Eu-Substituents-Induced Modifications in the Thermoelectric Properties of the Zintl Phase Ba1-xEuxZn2Sb2 System
Eu-Substituents-Induced Modifications in the Thermoelectric Properties of the Zintl Phase Ba1-xEuxZn2Sb2 System Open
Four quaternary Zintl phase thermoelectric (TE) materials belonging to the Ba1-xEuxZn2Sb2 (x = 0.02(1), 0.04(1), 0.08(1), 0.15(1)) system were successfully synthesized using the molten Pb-flux or the conventional high-temperature reaction …
View article: Synergistic engineering of ultraviolet metal-free crystals with exceptional birefringence <i>via</i> pyridine-derived dimers
Synergistic engineering of ultraviolet metal-free crystals with exceptional birefringence <i>via</i> pyridine-derived dimers Open
The introduction of optimized [4-HP/4-H 2 P] + cationic dimer pairs, instead of single monovalent [4-AP] + cations, enhances birefringence by increasing the density of cationic layers and improving the alignment of anionic [3-pySO 3 ] − gr…
View article: Deep-ultraviolet sulfamate halides with halogen-centered secondary building units for enhanced optical anisotropy
Deep-ultraviolet sulfamate halides with halogen-centered secondary building units for enhanced optical anisotropy Open
Four DUV sulfamate halide co-crystals, AX(NH 3 SO 3 ) (A = Rb, Cs; X = Cl, Br), have been successfully synthesized by combining [XA m ] secondary building units with [NH 3 SO 3 ] polar tetrahedra, leading to a significant enhancement in bi…
View article: Complex Structure, Chemical Bonding, and Electrical Transport Properties of a La-Doped Zintl Phase
Complex Structure, Chemical Bonding, and Electrical Transport Properties of a La-Doped Zintl Phase Open
The La-doped ternary Zintl phase Ca10.43(3)La0.57Sb9.69(1) was successfully synthesized by arc melting, and the title compound adopted the Ho11Ge10-type structure with a tetragonal I4/mmm space group (Z = 4, Pearson code tI84). The complex…
View article: Comparison of oxygen evolution reaction performance for Ni and Co using isostructural <i>trans‐cinnamate</i> complexes
Comparison of oxygen evolution reaction performance for Ni and Co using isostructural <i>trans‐cinnamate</i> complexes Open
Efforts are underway to develop highly active catalysts to reduce the high overpotential of the oxygen evolution reaction (OER). Metal–organic frameworks or coordination polymers are promising candidates because of their tunable structures…
View article: Breaking Boundaries: Giant Ultraviolet Birefringence in Dimension‐Reduced Zn‐Based Crystals
Breaking Boundaries: Giant Ultraviolet Birefringence in Dimension‐Reduced Zn‐Based Crystals Open
Birefringent crystals have essential applications in optical communication areas. Low‐dimensional structures with inherited structural anisotropy are potential systems for investigating birefringent materials with large birefringence. In t…
View article: Crystal structure of <i>catena</i>-poly[(benzylamine-κ<sup>1</sup> <i>N</i>)-(sorbato-κ<sup>1</sup> <i>O</i>)-(μ<sub>2</sub>-sorbato-κ<sup>2</sup> <i>O</i>,<i>O</i>′)-copper(II), C<sub>19</sub>H<sub>23</sub>CuNO<sub>4</sub>
Crystal structure of <i>catena</i>-poly[(benzylamine-κ<sup>1</sup> <i>N</i>)-(sorbato-κ<sup>1</sup> <i>O</i>)-(μ<sub>2</sub>-sorbato-κ<sup>2</sup> <i>O</i>,<i>O</i>′)-copper(II), C<sub>19</sub>H<sub>23</sub>CuNO<sub>4</sub> Open
C 19 H 23 CuNO 4 , monoclinic, C 2/ c (no. 15), a = 16.1601(4) Å, b = 23.3298(7) Å, c = 12.8950(3) Å, β = 128.275(1) ∘ , V = 3816.6(2) Å 3 , Z = 8, R gt ( F ) = 0.0620, w R ref ( F 2 ) = 0.1251, T = 296(2) K.
View article: Polymorphisms in M2+AlF5(H2O)7 (M2+ = Fe2+, Co2+, or Ni2+): Syntheses, Crystal Structures, and Characterization of New Mixed Metal Fluoride Hydrates
Polymorphisms in M2+AlF5(H2O)7 (M2+ = Fe2+, Co2+, or Ni2+): Syntheses, Crystal Structures, and Characterization of New Mixed Metal Fluoride Hydrates Open
Three new mixed metal fluoride hydrates, M2+AlF5(H2O)7 (M2+ = Fe2+, Co2+, or Ni2+), were synthesized and characterized. The crystals of M2+AlF5(H2O)7 were obtained using a hydrothermal method with a CF3COOH aqueous solution. The crystal st…
View article: Crystal structure of <i>catena</i>-poly[aqua-(<i>μ</i> <sub>2</sub>-1,4-diazabicyclo[2.2.2]octane-k<sup>2</sup> <i>N</i>: <i>N</i>′)-bis(sorbato-<i>κ</i> <sup>1</sup> <i>O</i>)-copper(II), C<sub>18</sub>H<sub>28</sub>CuN<sub>2</sub>O<sub>5</sub>
Crystal structure of <i>catena</i>-poly[aqua-(<i>μ</i> <sub>2</sub>-1,4-diazabicyclo[2.2.2]octane-k<sup>2</sup> <i>N</i>: <i>N</i>′)-bis(sorbato-<i>κ</i> <sup>1</sup> <i>O</i>)-copper(II), C<sub>18</sub>H<sub>28</sub>CuN<sub>2</sub>O<sub>5</sub> Open
C 18 H 28 CuN 2 O 5 , orthorhombic, Pmmn (no. 59), a = 6.8107(1) Å, b = 24.3351(5) Å, c = 6.0304(1) Å, V = 999.47(3) Å 3 , Z = 2, R gt ( F ) = 0.0266, wR ref ( F 2 ) = 0.0676, T = 296(2) K.
View article: Frontispiece: Deep‐Ultraviolet Transparent Mixed Metal Sulfamates with Enhanced Nonlinear Optical Properties and Birefringence
Frontispiece: Deep‐Ultraviolet Transparent Mixed Metal Sulfamates with Enhanced Nonlinear Optical Properties and Birefringence Open
Angewandte Chemie International Edition is one of the prime chemistry journals in the world, publishing research articles, highlights, communications and reviews across all areas of chemistry.
View article: Frontispiz: Deep‐Ultraviolet Transparent Mixed Metal Sulfamates with Enhanced Nonlinear Optical Properties and Birefringence
Frontispiz: Deep‐Ultraviolet Transparent Mixed Metal Sulfamates with Enhanced Nonlinear Optical Properties and Birefringence Open
Graphical Abstract NLO Materials. Deep-ultraviolet transparent mixed metal sulfamates with enhanced nonlinear optical properties and birefringence are presented by Qun Jing, Kang Min Ok et al. in their Research Article (e202315434).
View article: Strategically designed metal-free deep-ultraviolet birefringent crystals with superior optical properties
Strategically designed metal-free deep-ultraviolet birefringent crystals with superior optical properties Open
Four metal-free deep-ultraviolet birefringent crystals, exhibiting excellent optical properties were designed using Sr 2 Be 2 B 2 O 7 as template, and centimeter-sized C(NH 2 ) 3 CH 3 SO 3 crystals were successfully grown via a mild aqua-s…
View article: Correction: Hydrogen bonding bolstered head-to-tail ligation of functional chromophores in a 0D SbF<sub>3</sub>·glycine adduct for a short-wave ultraviolet nonlinear optical material
Correction: Hydrogen bonding bolstered head-to-tail ligation of functional chromophores in a 0D SbF<sub>3</sub>·glycine adduct for a short-wave ultraviolet nonlinear optical material Open
Correction for ‘Hydrogen bonding bolstered head-to-tail ligation of functional chromophores in a 0D SbF 3 ·glycine adduct for a short-wave ultraviolet nonlinear optical material’ by Zhiyong Bai et al. , Chem. Sci. , 2024, 15 , 6572–6576, h…
View article: Crystal clear: unveiling giant birefringence in organic–inorganic cocrystals
Crystal clear: unveiling giant birefringence in organic–inorganic cocrystals Open
[LiNO 3 ·H 2 O· o -C 5 H 5 NO]· o -C 5 H 5 NO and [Mg(NO 3 ) 2 ·6H 2 O]·( o -C 5 H 5 NO) 2 , with giant birefringence, large bandgaps, and good growth habits, were designed using a cocrystal strategy.
View article: Hydrogen bonding bolstered head-to-tail ligation of functional chromophores in a 0D SbF<sub>3</sub>·glycine adduct for a short-wave ultraviolet nonlinear optical material
Hydrogen bonding bolstered head-to-tail ligation of functional chromophores in a 0D SbF<sub>3</sub>·glycine adduct for a short-wave ultraviolet nonlinear optical material Open
The interaction between SbF 3 and glycine in a new UV NLO material, SbF 3 ·glycine, reinforced by hydrogen bonding, results in a unique ‘head-to-tail’ ligation of functional chromophores in SbF 3 ·glycine, stimulating excellent UV NLO prop…
View article: Effect of co‐substitution on complex thermoelectric compounds: The <scp>Zintl</scp> phase <scp>Ba<sub>1‐</sub></scp><sub><i>x</i></sub><scp>Sr</scp><sub><i>x</i></sub><scp>Zn<sub>2‐</sub></scp><i><sub><i>y</i></sub></i><scp>Cu</scp><i><sub><i>y</i></sub></i><scp>Sb</scp><sub>2</sub> system
Effect of co‐substitution on complex thermoelectric compounds: The <span>Zintl</span> phase <span>Ba<sub>1‐</sub></span><sub><i>x</i></sub><span>Sr</span><sub><i>x</i></sub><span>Zn<sub>2‐</sub></span><i><sub><i>y</i></sub></i><span>Cu</span><i><sub><i>y</i></sub></i><span>Sb</span><sub>2</sub> system Open
Three co‐substituted quaternary and quinary Zintl phases belonging to the Ba 1‐ x Sr x Zn 2‐ y Cu y Sb 2 ( x = 0, 0.09; 0.24 ≤ y ≤ 0.42) system were prepared by the molten Pb metal‐flux method. Co‐substitution using the cationic Sr and ani…
View article: CCDC 2299342: Experimental Crystal Structure Determination
CCDC 2299342: 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: CCDC 2299341: Experimental Crystal Structure Determination
CCDC 2299341: 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 …