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Sensitized Luminescence of Rare Earths

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Chemical Research in Chinese Universities 1996年第1期12卷 10-15页

作者： SI Zhi-kun HU Jing-tian JIANG Wei and ZHU Gui-yun(Department of Chemistry, shandong University, jinan,{2.)LI Shu-hua(Department of Basic Courses, shandong institute of light industry, jinan,{2.) shandong UNIV DEPT CHEMJINAN 250100PEOPLES R CHINA shandong INST light IND DEPT BASIC COURSESJINAN 250100PEOPLES R CHINA

The enhancement effect on the fluorescence intensities of an Eu3+ (or/and Sm3+ )-thenoyltrifluoroacetone (TTA )-dibenzo-18-crown-6 (18-C-6 ) system and Eu 3+ (or /and Sm3+ ) -benzoyltrifluoroacetone (BTA )-cetyltrimethylammonium bromide (CTMAB) system by dysprosium has been studied. In the presence of enhancing ions, the fluorescence intensities of the above systems were enhanced by a factor of about 40-150, respectively. The above systems were used for the determination of europlum or/and samarium in rare earths oxides and gave satisfactory results.

关键词： Sensitized luminescence Rare earths Fluorescence

The Isomeric Structures of H_2.eLiF, the Prototype Germylenoid

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Chinese Chemical Letters 1999年第6期10卷 511-514页

作者： Hua Yu QIU Wan Yong MA Guan Bin LI Cong Hao DENG (Department of Chemical Engineering. shandong institute of {2. industry. jinan 250100 institute of Theoretical Chemistry. shandong University, jinan 250100) Department of Chemical Engineering Shandong Institute of Light Industry institute of Theoretical Chemistry Shandong University

The structures of four isomeric forms of the model germylenoid, H2.eLiF. have been examined by ah initio MO theory. The most stable structure is suggested to be the p-complex *** other three species. three-membered ring 2. δ-complex 3 and tetrahedron 4. are also local minima on the potential energy surface. but are higher in energy.

关键词： Germylenoid p-complex ab initio

City Environment Art and Sustainable Development

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Chinese Journal of Population,Resources and Environment 2007年第2期5卷 63-66页

作者： Ding Liwei shandong institute of {2. industry, jinan shandong 2.0353, China shandong institute of {2. industry

The development of everthing follows its own law, which does not change at people’s own sweet will. Therefore, we must study the development of things so as to grasp the essence of things in their deep meanings, explore the direction of their de- velopment, and make them better serve the people. As a part of the thought of sustainable development, city environment art will be of active significance to the perfection of the thought and will also be the concrete embodiment of the synthetic index of economic development. Such a thesis, starting from the macroscopic angle, and relying on the leading thought of sustainable development, takes hold of the development trend of city environment art, and explores the various problems that have arisen in city environment in the process of city management by combining thoughts on city planning, so as to guide urban harmonious development theoretically. The present paper expounds on the views comprehensively and, through the synthetic analysis on city planning, city environment, art esthetics and the thought of sustainable development, makes a detailed analysis of the effects of the present rapid city development on city environment.

关键词： city environment art sustainable development

Conduction Properties and Scattering Mechanisms in F-doped Textured Transparent Conducting SnO_2.Films Deposited by APCVD

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Journal of Materials Science & Technology 1997年第1期13卷 50-56页

作者： Deheng ZHANG(Dept. of Physics, shandong University, jinan{2., China)Honglei MA(institute of Optoelectronic Materials and Devices, shandong University, jinan{2., China) Dept. of Physics Shandong University Jinan 250100 China institute of Optoelectronic Materials and Devices Shandong University Jinan 250100 China

Transparent conducting F-doped texture SnO2.films with resistivity as low as 5× 10-4 Ω ·cm,with carrier concentrations between 3.5 × 102. and 7× 102. cm-3 and Hall mobilities from 15.7 to 2..1 cm2.(V/s) have been prepared by atmosphere pressure chemical vapour deposition (APCVD). These polycrystalline films possess a variable preferred orientation, the polycrystallite sizes and orientations vary with substrate temperature. The substrate temperature and fluorine flow rate dependence of conductivity, Hall mobility and carrier conentration fOr the resultingfilms have been obtained. The temperature dependence of the mobiity and carrier concentrationhave been measured over a temperature range 16～400 K. A systematically theoretical analysis on scattering mechanisms for the highly conductive SnO2.films has been given. Both theoretical analysis and experimental results indicate that for these degenerate, polycrystalline SnO2.：F films in the low temperature range (below 100 K), ionized impurity scattering is main scattering mechanism. However, when the temperature is higher than 100 K, the lattice vibration scattering becomes dominant. The grain boundary scattering makes a small contribution to limit the mobility of the films.

关键词： SnO cm Conduction Properties and Scattering Mechanisms in F-doped Textured Transparent Conducting SnO2.Films Deposited by APCVD

Function of the iron-binding chelator produced by Coriolus versicolor in lignin biodegradation

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Science China(Life Sciences) 2008年第3期51卷 214-221页

作者： WANG Lu1, YAN WenChao1, CHEN JiaChuan2. HUANG Feng1,2.& GAO PeiJi1 1 State Key Laboratory of Microbial Technology, shandong University, jinan{2., China 2.shandong Key Lab of Pulp and Paper Engineering, shandong institute of light industry, jinan{2., China State Key Laboratory of Microbial Technology Shandong University Jinan China shandong Key Lab of Pulp and Paper Engineering Shandong Institute of Light Industry Jinan China

An ultrafiltered low-molecular-weight preparation of chelating compounds was isolated from a wood-containing culture of the white-rot basidiomycete Coriolus versicolor. This preparation could chelate Fe3+ and reduce Fe3+ to Fe2., demonstrating that the substance may serve as a ferric chelator, oxygen-reducing agent, and redox-cycling molecule, which would include functioning as the electron transport carrier in Fenton reaction. Lignin was treated with the iron-binding chelator and the changes in structure were investigated by 1H-NMR, 13C-NMR, difference spectrum caused by ionization under alkaline conditions and nitrobenzene oxidation. The results indicated that the iron-binding chelator could destroy the β-O-4 bonds in etherified lignin units and insert phenolic hydroxyl groups. The low-molecular-weight chelator secreted by C. versicolor resulted in new phenolic substructures in the lignin polymer, making it susceptible to attack by laccase or manganese peroxidase. Thus, the synergic action of the iron-binding chelator and the lignocellulolytic enzymes made the substrate more acces- sible to degradation.

关键词： Coriolus versicolor lignin degradation iron binding chelator

THE SYNTHESIS OF 4,5-BIS(4'-BROMOBENZYLTHIODITHIOLE-2.THIONE WITH ONE DIMENSIONAL INTERMOLECULAR INTERACTIONS

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Chinese Chemical Letters 1996年第2期7卷 103-104页

作者： Fang QI(institute of Crystal Materials, shandong University,{2., 250100) institute of Crystal Materials Shandong University Jinan 250100 China

The title compound BBBT-Dry (C17H12.r2.5, Mr=536.42. has been synthesized and its structure feature has been described. BBBT-DTT is characterized by one dimensional chains formed by S…S (head to head) and Br…Br (tai... 详细信息

关键词： BIS THIONE WITH INTERMOLECULAR INTERACTIONS OF SYNTHESIS DITHIOLE DIMENSIONAL BROMOBENZYLTHIO

DFT study of the conductance of molecular wire:The effect of coupling geometry and intermolecular interaction on the transport properties

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Science China Chemistry 2006年第6期49卷 492-498页

作者： QI Yuanhua1,2. GUAN Daren1 & LIU Chengbu1 1. institute of Theoretical Chemistry, shandong University,{2. 250100, China 2. School of Physics and Microelectronics, shandong University,{2. 2.0061, China institute of Theoretical Chemistry Shandong University Jinan China School of Physics and Microelectronics Shandong University Jinan China

The density functional theory (DFT) combining with the non-equilibrium Green functions (NEGF) method is applied to the study of the electronic transport properties for a Di-thiol-benzene (DTB) molecule coupled to two Au(111) surfaces. The dependence of the transport properties on the bias, the coupling geometry of the molecule-electrode interface, and the intermolecular interaction are examined in detail. The results show that the existence of the hydrogen atom at the end of the DTB molecule would significantly decrease the transmission coefficients, and then the differential conductance (dI/dV). By changing the position of the DTB molecule located between two electrodes a maximum value of calculated current is observed. It is also found that the intermolecular interaction will strongly influence the transport properties of the system studied.

关键词： non-equilibrium Green functions method, transmission spectrum, the molecular projected selfconsistent Hamiltonian, projected density of state.

Crystallization Mechanism of Na_2.-CaO-Al_2._3-SiO_2.F Glass Containing Cr_2._3

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International Journal of Minerals,Metallurgy and Materials 1999年第3期13卷 214-218页

作者： Lidong Teng Fuming Wang Wenchao Li(Department of inorganic Materials, shandong institute of {2. industry, jinan 250100, China)(Applied Science School, University of Science and Technology Beijing, Beijing 100083, China) Department of Inorganic Materials Shandong Institute of Light Industry Jinan 250100 China Applied Science School University of Science and Technology Beijing Beijing 100083 China

The effect of Cr2.3 on the nucleation and crystallization of Na2.-CaO-Al2.3-SiO2.F- glass has been investigated by means of ESR(Electron Spin Resonance), SEM(Scanning Electron Microscope), EDS(Energy Dispersive Specrometer) and so on. Computer pattern recognition is applied to optimize the heat-treatment schedules. The experimental results show that the base glass containing more than 1 .5 % (mass fraction) Cr2.3 can be nucleated internally and converted to spheroidal crystal glass materials. The spheroidal crystal consisted of fibrous wollastonite crystals radiating from a center. The residual glass phase filled in the interstices between the fibers and between the spherulites. During heat treatment process, the valence states ofchromium changed from Cr6- to Cr3-, and the Cr-spinel solidsolution [CaCr2.4] precipitated followed this valence change. At the primary stage of crystallization, the Cr-spinel could act as a nucleating center on which the principal or}stalline phase β-CaSiO3 grew epitaxially.

关键词： crystallized glass Na_2.-CaO-Al_2._3-SiO_2 Cr_2._3 pattern recognition

Sol-gel preparation and spectroscopic study of the pyrophanite MnTiO_3 nanoparticles

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Science China Chemistry 2005年第3期48卷 210-215页

作者： ZHOU Guowei1, KANG Youngsoo2. LI Tianduo1 & XU Guiying3 1. School of light Chemicals and Environmental Engineering, shandong {2. of light industry, jinan 250100, China 2. Department of Chemistry, Pukyong National University, Daeyeon-3-dong, Nam-gu, Pusan 608-737, Korea 3. Key Laboratory for Colloid and Interface of Ministry of Education of China, shandong University, jinan 250100, China School of light Chemicals and Environmental Engineering Shandong Institute of Light Industry Jinan China Department of Chemistry Pukyong National University Pusan Korea Key Laboratory for Colloid and Interface of Ministry of Education of China Shandong University Jinan China

The nanosized xerogel of titanium dioxide (TiO2. and manganese oxides (MnO2. Mn2.3, Mn3O4) was prepared by the sol-gel method using manganese chloride (MnCl2.4H2.) and titanium isopropoxide (Ti(O-iPr)4) as precursors in cetyltrimethylammonium bromide (CTAB)/ ethanol/H2./HCl micelle solutions, following the calcinations of the produced powders at differ-ence temperatures. The nanostructure and phase composition of these nanoparticles were characterized with X-ray powder diffraction (XRD), transmission electron microscopy (TEM), en-ergy dispersive X-ray spectroscopy (EDX) and X-ray photoelectron spectroscopy (XPS). The spectroscopic characterizations of these nanoparticles were also done with UV-Vis spectroscopy and laser Raman spectroscopy (LRS). XRD patterns show that the pyrophanite MnTiO3 phase was formed at the calcinations temperature of 900℃. The TEM images show that the nanoparti-cles are almost spherical or slight ellipose and the sizes are 50 nm on average. The UV-Vis spectra show that the nanosized MnTiO3 have significant absorption bands in the visible region. There are new absorption peaks of MnTiO3 nanoparticles in LRS compared with the pure TiO2.powder.

关键词： pyrophanite MnTiO3, nanoparticles, spectroscopy, CTAB micelle, sol-gel.