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Valence Change and Luminescence of Divalent Samarium in Strontium Borates

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Journal of Materials Science & Technology 1999年第5期15卷 449-452页

作者： Qinghua ZENG Zhiwu PEI Shubing WANG and Qiang SU(Laboratory of Rare Earth chemistry and Physics, changchun institute of applied chemistry, chinese academy of sciences, changchun 130022, china) To whom correspondence should be addressedE-mail: zengqh@ns. Laboratory of Rare Earth chemistry and Physics Changchun Institute of Applied Chemistry Chinese Academy of Sciences Changchun 130022 China Laboratory of Excited State Processes Chinese Academy of Sciences Changchun 130022 China

The valence change of samarium from trivalent to divalent state in strontium borates (SrB6O10)prepared in air was observed. The high resolution spectra of Sm2+ in matrix were studied between 10 K and 300 K. The results showed that three crystallographic sites for Sm2+ were available in the host. Energy transfer among these sites was possible. The vibronic transition of 5D0-7F0 of Sm2+ was studied at room temperature and the huang-Rhys factor S was calculated. Due to the thermal population, 5D1 -7F0 transition at room temperature was observed

关键词： FJ cm nm

Thermal behavior and phase behavior in blends of liquid crystalline poly(aryl ether ketone) and poly(aryl ether ether ketone) containing thioether units

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Science china chemistry 2012年第4期55卷 612-617页

作者： LI Ye1, CHEN Jian2, LIU XinCai1 & YANG DeCai2 1Alan G. MacDiarmid institute, Jilin University, changchun 130012, china 2State Key Laboratory of Polymer Physics and chemistry changchun institute of applied chemistry, chinese academy of sciences, changchun 130022, china Alan G. MacDiarmid institute Jilin University Changchun China State Key Laboratory of Polymer Physics and chemistry changchun institute of applied chemistry Chinese Academy of Sciences Changchun China

Thermal behavior and phase behavior in blends of liquid crystalline poly(aryl ether ketone) with lateral methoxy groups (M-PAEK) and poly(aryl ether ether ketone) containing thioether units (S-PEEK) have been investigated by differential scanning calorimetry (DSC) and polarized light microscopy (PLM) techniques. The results indicate that the composition of the blends has great effect on the phase behavior and morphology. Thin films of pure M-PAEK and S-PEEK crystallized from the melts exhibit typical mosaic and spherulitic structures, respectively. For the blends with higher M-PAEK contents (> 50%), an unusual ring-banded spherulite with structural discontinuity is formed. The bright core and rings of the ring-banded spherulites under PLM are composed of M-PAEK phase, while the dark rings consist mainly of S-PEEK phase. For the 50:50 M-PAEK/S-PEEK blend, the ring-banded spherulites and S-PEEK spherulites coexist, which implies that a partial phase separation between the two components takes place in the melting state. In S-PEEK-rich blends, a volume-filled spherulite is produced. In addition, the effect of isothermal crystallization temperature on the phase behavior, especially the ring-banded spherulite formation in the blends, is discussed.

关键词： liquid crystalline poly(aryl ether ketone) – poly(aryl ether ether ketone) containing thioether units – phase behavior – rhythmically grown ring banded spherulite

Vibrational Spectrum and Luminescence Properties of CaAl2B2O7∶Eu3+

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Journal of Rare Earths 1999年第2期 22-24页

作者： You Hongpeng , Hong Guangyan (Laboratory of Rare Earth chemistry and Physics, changchun institute of applied chemistry,chinese academy of sciences, changchun 130022, china)

Ｉｎｒｅｃｅｎｔｙｅａｒｓｃｏｍｐｏｕｎｄｓｗｉｔｈｍｉｘｅｄｏｘｉｄｅａｎｉｏｎｓｈａｖｅｂｅｎｓｔｕｄｉｅｄｅｘｔｅｎｓｉｖｅｌｙ［１～６］．Ｉｎａｄｄｉｔｉｏｎｔｏａｆｕｎｄａｍｅｎｔａｌｉｎｔｅｒｅｓｔ，ｔ... 详细信息

Ｉｎｒｅｃｅｎｔｙｅａｒｓｃｏｍｐｏｕｎｄｓｗｉｔｈｍｉｘｅｄｏｘｉｄｅａｎｉｏｎｓｈａｖｅｂｅｎｓｔｕｄｉｅｄｅｘｔｅｎｓｉｖｅｌｙ［１～６］．Ｉｎａｄｄｉｔｉｏｎｔｏａｆｕｎｄａｍｅｎｔａｌｉｎｔｅｒｅｓｔ，ｔｈｅｐｏｓｉｂｌｅｕｓｅｏｆｔｈｅ...

关键词： Rare earths Europium CaAl2B2O7Eu3+ Vibrational spectrum Luminescence property Phonon sideband

Electrochemical Scanning Tunneling Microscopy──An Ex－situ Study of the Growth of Polypyrrole Films on Electrodes

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Chemical Research in chinese Universities 1994年第2期10卷 72-78页

作者： LI Jing and WANG Er-kang (Laboratory of Electroanalytical Chemistiy, changchun institute of applied Chemistr, chinese Acadeniy of sciences, changchun, 130022 )

his paper covers the electropolymerized polypyrrole doped with p-toluenesul-fonate studied using scanning tunneling microscope. The growth processes of polypyrrole films on the electrode surface were observed. Polypyrrole chain struc-ture with many separated micro-holes of 0. 15 nm diameter at the initial state ofelectropolymerization can be seen from obtained STM images. This structure is ex-tremely similar to the pioneer-proposed ideal structure of polypyrrole chains. Thereexisted some helical structure and simple strands on the electrode surface, which isdue to different existing states of polypyrrole chains on electrode surface. STM ex-periments showed that polypyrrole chains were firstly formed on the electrode sur-face, then, they growed gradually by 3-dimensional mode during slow oxidation toform many separated micro-islands. Finally, a large corrugation area of polymerfilms occurred on the electrodes.

关键词： Electrochemical scanning tunneling microscopy Polypyrrole films,Electrochemistry

CO-DEPOSITION OF Li(Ⅰ)WITH RE(Ⅲ)AND ITS APPLICATION IN THE PRODUCTION OF Al-Li-Cu-RE ALLOY BY MOLTEN SALT ELECTROLYSIS

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chinese Chemical Letters 1991年第2期2卷 163-166页

作者： Kai Guo CHANG Min Shou ZHAO changchun institute of applied chemistry,chinese academy of sciences,changchun 130022

The possibility of co-deposition of Li(Ⅰ)and RE(Ⅲ)has been estimated by both theoretical analysis and experimental study on the influences of temperature and concen- tration of chloride on the deposition *** the electrochemical and electrolytic results clearly show that Li(Ⅰ)and RE(Ⅲ)can co-deposit on the Al-Cu electrode under selected conditions.

关键词： Li AND ITS APPLICATION IN THE PRODUCTION OF Al-Li-Cu-RE ALLOY BY MOLTEN SALT ELECTROLYSIS WITH RE Al Cu ITS

VAPOR-PHASE ALKYLATION OF BENZENE WITH PROPYLENE OVER SiW12/C CATALYST

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chinese Journal of Catalysis 1995年第6期 431+732-431+732页

作者： Chu,Wen ling Yang,Xiang-guang Ye,Xing-kai and Wu,Yue(changchun institute of applied chemistry, chinese academy of sciences,changchun 130022)

ＶＡＰＯＲ－ＰＨＡＳＥＡＬＫＹＬＡＴＩＯＮＯＦＢＥＮＺＥＮＥＷＩＴＨＰＲＯＰＹＬＥＮＥＯＶＥＲＳｉＷ１２／ＣＣＡＴＡＬＹＳＴＣｈｕ，Ｗｅｎｌｉｎｇ；Ｙａｎｇ，Ｘｉａｎｇ－ｇｕａｎｇ；Ｙｅ，Ｘｉｎｇ－ｋａｉａｎｄＷｕ，... 详细信息

ＶＡＰＯＲ－ＰＨＡＳＥＡＬＫＹＬＡＴＩＯＮＯＦＢＥＮＺＥＮＥＷＩＴＨＰＲＯＰＹＬＥＮＥＯＶＥＲＳｉＷ１２／ＣＣＡＴＡＬＹＳＴＣｈｕ，Ｗｅｎｌｉｎｇ；Ｙａｎｇ，Ｘｉａｎｇ－ｇｕａｎｇ；Ｙｅ，Ｘｉｎｇ－ｋａｉａｎｄＷｕ，Ｙｕｅ(ＣｈａｎｇｃｈｕｎＩ?..

关键词： alkylation benzene propylene supported heteropolyacid catalyst

A　NEW　METHOD　FOR　THE　PREPARATION　OF　FULLEROL

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chinese Chemical Letters 1996年第5期7卷 431-432页

作者： Da Yong SUN Zi Yang LIU Xing Hua GUO Yi Min SHE Yu ZHOU Shu Ying LIU (The Key Laboratory of applied Spectroscopy, changchun institute of applied chemistry, chinese academy of sciences, changchun. Jilin 130022) Key Lab. of applied Spectroscopy Changchun Inst. of Applied Chemistry Chinese Academy of Sciences Changchun Jilin 130022

Abstract: Reaction of C60 with excessive potassium in toluene at refluxing temperature results in black precipitate K0C60 with high conversion. which can completely be hydrolyzed to prepare the fullerol. Investigation... 详细信息

关键词： C-60 DERIVATIVES ACID INHIBITION chemistry

THE STRUCTURAL CHARACTERIZATION OF TRITERPENOID SAPONINS FROM chinese MEDICINAL HERBS USING ESI-MS~N

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质谱学报 1999年第Z1期 49-50页

作者： CUI Meng, LIU Shuying, SONG Fengrui, SUN Weixing (changchun institute of applied chemistry, chinese academy of sciences, changchun 130022, china)

In-Situ Synthesis of Terbium Complex with Salicylic Acid in Silica Matrix by a Two-Step Sol-Gel Process

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chinese Chemical Letters 1998年第12期9卷 0-0,0-0页

作者： Lian She FU Hong Jie ZHANGl Shu Bin WANG Qing Guo MENG Km Yue YANG Jia Zuan NI(Laboratory of Rare Earth chemistry and Physics, changchun institute of applied chemistry,chinese academy of sciences, changchun, 130022) Lab. of Rare Earth Chem. and Physics Changchun Inst. of Applied Chemistry Chinese Academy of Sciences Changchun 130022 China

A process for in situ synthesis of terbium complex with salicylic acid by a two-step solgel method in silica matrix has been proposed. The luminescence properties of the silica gelscodoped with terbium and salicylic acid have also been discussed with respect to that of the geldoped with terbium and that of pure terbium complex with salicylic acid.

关键词： Sol-gel method In situ synthesis, rare earth complex