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Syntheses and Structures of Two Complexes Based on Mixing Carboxylate Ligands and Imidazole-containing Ligands

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Chinese Journal of Structural Chemistry 2015年第10期34卷 1546-1552页

作者：孙杰王艳华李延敏周菊华 School of Life Science Ludong University

Two novel complexes, [Zn（L2-1）（L2）]（1） and [Ni（L2-3）（L4）·2H2O]（2）, have been synthesized by solvothermal reactions in different solvents through mixing the carboxylate ligand, imidazole-containing ligand and the metal salt. Compound 1 crystallizes in monoclinic, space group P21/c with a = 9.21400（15）, b = 18.1172（3）, c = 15.7669（2） A, β = 91.1769（13）o, C30H26N4O4 Zn, Mr = 571.92, V = 2631.44（7） A3, Z = 4, Dc = 1.444 g·cm-3, μ = 1.659 mm-1, F（000） = 1184, λ（Cu Kα） = 1.54178 A, the final R = 0.048, w R = 0.1442 and S = 1.139. Compound 2 crystallizes in triclinic, space group P1 with a = 7.0664（3）, b = 9.5265（4）, c = 12.8861（6） A, α = 74.066（4）, β = 87.408（3）, γ = 83.591（3）o, C34H32N6O6S2 Ni, Mr = 743.49, V = 828.83（6） A3, Z = 1, Dc = 1.490 g·cm-3, μ = 2.490 mm-1, F（000） = 386, λ（CuK α） = 1.54178 A, the final R = 0.0315, w R = 0.0861 and S = 1.022. Complex 1 is the 1D chain which is linked by C–H···O hydrogen bonding interactions to form a 2D supramolecular architecture. Meanwhile, complex 2 is a 2D（4,4） network with the ABCABC stacking mode and then generates a 3D supramolecular architecture through C–H···N and O–H···O hydrogen bonding interactions.

关键词： complexes supramolecular architecture hydrogen bonding interactions

Structural and optical properties of Zn-doped β-Ga_2O_3 films

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Journal of Semiconductors 2012年第7期33卷 20-23页

作者：岳伟闫金良吴江燕张丽英 School of Physics Ludong University

Intrinsic fi-Ga203 and Zn-doped β-Ga203 films were prepared using RF magnetron sputtering. The effects of the Zn doping and thermal annealing on the structural and optical properties are investigated. In compar- ison with the intrinsic β-Ga203 films, the microstructure, optical transmittance, optical absorption, optical energy gap, and photoluminescence ofZn-doped β-Ga203 films change significantly. The post-annealed β-Ga203 films are polycrystalline. After Zn doping, the crystallization deteriorates, the optical band gap shrinks, the transmittance decreases and the UV, blue, and green emission bands are enhanced.

关键词： transparent conductive oxides Zn-doped β-Ga203 optical transmittance optical band gap photolu-minescence

Synthesis, Structure and Luminescence of a Zn^Ⅱ Complex Derived from 1,2-Benzenedicarboxylic Acid Ligand

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Chinese Journal of Structural Chemistry 2015年第10期34卷 1533-1538页

作者：孙杰王爱云李清周菊华 School of Life Science Ludong University

The reaction of 1,2-benzenedicarboxylic acid（H2L） with Zn（NO）3·6H2O and selfdesigned 1,2-bis（imidazol-1-ylmethyl）-benzene）（2-bimb） in DMA/H2 O results in the forming of double chains ZnⅡ complex, {[Zn2.5（L）2（bimb）（H2O）]·H2O}n（1）, which has been characterized by TGA, PXRD and single-crystal X-ray diffraction. Compound 1 crystalizes in monoclinic, space group P1 with a = 11.4030（3）, b = 11.9722（3）, c = 13.5702（4） A, α = 89.903（3）, β = 80.692（2）, γ = 63.999（3）o, C64H56N8O20Zn5, Mr = 1584.01, V = 1638.15（9） A3, Z = 1, Dc = 1.606 g·cm-3, μ = 1.885 mm-1, F（000） = 806., 2.07θ25°, λ（Mo Kα） = 0.71073 A, T = 293（2） K, the final R = 0.0439, wR = 0.01393 and S = 1.057. X-ray diffraction analysis reveals that complex 1 possesses a 2D double-chain structure. In addition, the solid state luminescent property of complex 1, H2 L, and 2-bimb at room temperature are also investigated.

关键词： zinc complex crystal structure chain luminescence

Theoretical Study of the Stereodynamics of the Reaction C(^(3)P)+CH(X^(2)Π) and Its Isotopic Variants

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Chinese Physics Letters 2011年第6期28卷 106-109页

作者： WU Ji-Cheng WANG Mei-Shan YANG Chuan-Lu LI Xiao-Hu CHEN Xiao-Qiong School of Physics Ludong UniversityYantai 264025

Vector correlations between products and reagents of the reaction C+CH and the isotopic variant reactions are calculated by employing the quasi-classical trajectory method based on the adiabatically 1^(2)A" double−many-body-expansion potential-energy surface computed and numerically fitted by Boggio-Pasqua et *** normalized polarization-dependent differential cross-sections and the distributions of P(θr),P(φr)and P(θr,φr)at the selected collision energy are discussed in *** values of the product rotational alignment parameter{P_(2)(j'⋅k)}are also calculated and plotted as functions of the collision energy in the range 0.005–0.5 *** computed results show that the rotational polarizations of the product present pronounced different characters as the mass substituted atom increasing.

关键词： rotational collision substituted

Photodetachment of H^- near a metal surface

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Chinese Optics Letters 2009年第3期7卷 176-179页

作者：王德华于永江王洪润 School of Physics and Electronic Engineering Ludong University

By using the closed orbit theory, the photodetachment cross section of H^- near a metal surface is derived and calculated. The results show that the metal surface has great influence on the photodetachment process. As the ion-surface distance is very large, the influence of the electrostatic image potential caused by the metal surface becomes small and can be neglected. The period, action, and length of the detached electron＇s closed orbit are nearly the same as the case of the photodetachment of H^- near an elastic interface. However, with the decrease of the ion-surface distance, the influence of the metal surface becomes significant. The amplitude of the oscillation in the photodetachment cross section becomes complicated. Each resonance peak in the Fourier transformed cross section is associated with one electron＇s closed orbit. Unlike the case of the photodetachment of H^- near an elastic interface, the length of the closed orbit does not equal the twice distance between the ion and the surface. But with the increase of the ion-surface distance, the length of the closed orbit approaches the case of the closed orbit near an elastic interface, which suggests the correctness of our method. This study provides a new understanding on the photodetachment process of H^- in the presence of a metal surface.

关键词： Ions Orbits

Improvement in electroluminescence performance of n-ZnO/Ga_2O_3 /p-GaN heterojunction light-emitting diodes

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Chinese Physics B 2013年第12期22卷 517-521页

作者：张立春赵风周王菲菲李清山 School of Physics and Optoelectronic Engineering Ludong University

n-ZnO/p-GaN heterojunction light-emitting diodes with and without a Ga2O3 interlayer are fabricated. The electroluminescence （EL） spectrum of the n-ZnO/p-GaN displays a single blue emission at 430 nm originating from GaN, while the n-ZnO/Ga2O3/p-GaN exhibits a broad emission peak from ultraviolet to visible. The broadened EL spectra of n-ZnO/Ga2O3/p-GaN are probably ascribed to the radiative recombination in both the p-GaN and n-ZnO, due to the larger electron barrier （ΔEC=1.85 eV） at n-ZnO/Ga2O3 interface and the much smaller hole barrier （ΔEV=0.20 eV） at Ga2O3/p-GaN interface.

关键词： light-emitting diodes heterojunction ZnO

Application of coupled equation method on resonance processes of atomic lithium

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Chinese Optics Letters 2007年第11期5卷 621-623页

作者：房增科马晓光 Department of Physics ludong university Yantai 264025

The coupled equation method （CEM） has been applied to investigating the resonance structures for the ground state 1s^22s^ 2S of the neutral lithium from the first threshold up to 64.5 eV. Resonance structures of atomic lithium due to single excitations of the ls and 2s electrons are studied by infinite-order calculations in detail. The effect of spin-orbit splitting is also included for some of the low-lying ls2snp（↑↓） resonance, and the influence of the interference between 1s^2s^3 Snp .↓ and 1s2s^ 1 Snp ↑ states on the resonance structure has been confirmed theoretically. The results show that the presented technique can give the reasonable resonance structures very well in photoionization processes.

关键词： Application of coupled equation method on resonance processes of atomic lithium

Enhanced soft magnetic properties of iron powders through coating MnZn ferrite by one-step sol–gel synthesis

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Chinese Physics B 2019年第5期28卷 300-304页

作者： Dong Liu Shanmin Gao Rencheng Jin Feng Wang Xiaoxiao Chu Taiping Gao Yubao Wang School of Chemistry and Materials Science Ludong University

The MnZn ferrite coating formed on the surface of iron-based soft magnetic powders via facile and modified sol–gel process has been fabricated to obtain better magnetic performance due to its higher permeability compared with traditional nonmagnetic insulation coatings. The influence of the MnZn ferrite contents on the magnetic performance of the soft magnetic composites(SMCs) has been studied. As the MnZn insulation content increases, the core loss first experiences a decreasing trend that is followed by progressive increase, while the permeability follows an increasing trend and subsequently degrades. The optimized magnetic performance is achieved with 2.0 wt% MnZn ferrite, which results from the decrement of inter-particle eddy current losses based on loss separation. A uniform and compact coating layer composed of MnZn ferrite and oxides with an average thickness of 0.38 ± 0.08 μm is obtained by utilizing ion beam technology, and the interface between the powders and the coating shows satisfied adhesiveness compared with the sample directly prepared by mechanical mixing. The evolution of the coating layers during the calcination process has been presented based on careful analysis of the composition and microstructure.

关键词： soft magnetic powders magnetic performance coating layer ion beam technology

Potential energy curve study on the ^3Π electronic states of GaX （X=F, Cl, and Br） molecules

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Chinese Physics B 2013年第12期22卷 221-224页

作者：曹云斌杨传路王美山马晓光 School of Physics and Optoelectronics Engineering Ludong University

The potential energy curves （PECs） of the 3Π states of GaX （X=F, Cl, and Br） molecules are calculated using the multireference configuration interaction method with a large contracted basis set aug-cc-pV5Z. The PECs are accurately fitted to analytical potential energy functions （APEFs） using the Murrell–Sorbie potential function. The spectroscopic parameters for the states are determined using the obtained APEFs, and compared with the theoretical and experimental data available presently in the literature.

关键词： potential energy curve analytical potential energy function spectroscopic parameters multi-reference interaction configuration