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含能材料 2001年第1期9卷 8-9页

作者： HU Rong zu 1, YANG De suo 2. ZHANG Jiao qiang 3 (1. department of chemistry,Northwest University, Xi′an 710065, China {2., baoji college of arts and science, baoji 72.007, China 3. department of 西北大学陕西西安 710065 宝鸡文理学院陕西 721007 西北工业大学陕西西安 710072

Two relationships are established using the least squares method,between the kinetic parameters (the apparent activation energy and pre exponential constant),and the exothermic decomposition temperature and ther... 详细信息

关键词： critical temperature of thermal explosion decomposition temperature DSC energetic materials.

Gas-sensing properties of nanocomplex metal oxide

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Progress in Natural science:Materials International 2005年第7期15卷 669-672页

作者： CHEN Liangyuan, HE Zhusheng, YAN Tao, BAI Shouli, CHEN Aifan and LIU Chung Chiun ( Electronics Design Center, Case Western Reserve University, Cleveland, OH 44106, USA department of chemistry and {2. engineering, baoji University of arts and science, baoji 72.007, China college of science, Beijing University of {2. Technology, Beijing 10002., China) Electronics Design Center Case Western Reserve University Cleveland 01-I 44106 USA. department of chemistry and {2. engineering Baoji University of Arts and Science Baoji 721007 China. college of science Beijing University of Chemical Technology Beijing 100029 China

The development of CuO/CeO2.nanocomposites as the sensing material of semiconductor gas sensors is reported. CuO/CeO2.nanocomplex oxide is prepared by modified sol-gel method that uses copper nitrate, cerium nitrate and ethylene glycol as precursors. The optimized synthesis parameters and processing condition have been established. The particle size and distribution, phase morphology, specific surface, electronic states of atoms and gas sensing properties have been systematically characterized by Transmission Electron Microscope (TEM), Brunauer Emmett Teller (BET), X-ray diffraction (XRD), X-ray Photoelectron Spectroscopy (XPS) and gas sensitivity measurement. The results show that the sensor sensitivity depends on particle size, Cu/Ce cation ratio and calcination temperature. The effects of calcinations temperature and CuO loading on the gas sensitivity are also examined. The optimum calcination temperature and the CuO content for the highest sensitivity are 600 ℃and 12. , respectively. The combination of excellent thermal stability and tunable sensing properties through careful control of the processing parameters and selection of material composition gives rise to novel nanocomposites attractive to the sensitive and selective detection of a variety of toxic and combustible gases.

关键词： copper oxide cerium oxide nanocomposite CO gas sensitivity.

Quantum chemistry Study on Dissociation of Oxalyl Bromide

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Chinese Journal of Structural chemistry 2005年第11期 116-121+12页

作者： GENG Zhi-Yuana② WANG Dong-Meia, c WANG Yong-Chenga DAI Guo-Lianga LU Ling-Linga WANG Han-Qingb a (college of chemistry and {2. engineering, Northwest Normal University, Lanzhou 730070, China) b (Lanzhou Institute of chemistry and Physics, The Chinese Academy of sciences, Lanzhou 730000, China) c (department of chemistry, baoji college of arts & Sci., baoji 72.007, China) college of chemistry and {2. engineering， Northwest Normal University， Lanzhou 730070， China college of chemistry and {2. engineering， Northwest Normal University， Lanzhou 730070， China department of chemistry， {2. college of arts & Sci.， baoji 72.007，China Lanzhou Institute of chemistry and Physics，The Chinese Academy of sciences， Lanzhou 730000， China

The multi-bond dissociation dynamics of oxalyl bromide ((BrCO)2. has been in- vestigated by DFT and CIS calculations. Upon the results, conclusion could be drawn that disso- ciation of C–Br bond of oxalyl bromide at the ground state (S0) is of barrierless. After the absorption of a photon, (BrCO)2.is excited to the first excited state and one of its C–Br bonds is broken to yield Br˙* and BrCOCO˙* free radicals. In addition, BrCOCO˙* with high energy is apt to release en- ergy, and ultimately, turns into BrCOCO˙of the ground state. The energy is adequate for BrCOCO˙to break down into Br˙and 2.O; at the same time the C–C and C–Br bonds of BrCOCO˙free radicals dissociate.

关键词： oxalyl bromide multi-bond dissociation BrCOCO˙free radical DFT

Strong Room-Temperature Photoluminescence from the Novel Adduct of C_(60) with Aliphatic Amines

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Chinese chemical Letters 2000年第8期11卷 713-716页

作者： Jin Li QIAO, Qiao Juan GONG, Chuan DONG, Wei Jun JIN (department of chemistry,Shanxi University, Taiyuan 030006 department of chemistry, arts and science college,Taiyuan University of Technology,Taiyuan 03002.) department of chemistry Shanxi University department of chemistry Arts and Science college Taiyuan University of Technology

Strong room-temperature photoluminescence from the adducts of C60 reacting with five different aliphatic amines, namely propylethylamine (PPA), n-butyl amine (BTA), n-heptylamine (HPA) and dodecylamine (DDA) and diethylamine (DEA), was firstly found from their toluene solution at relatively shorter wavelength around 519 *** fluorescence intensity has a good correlation with the length of n-alkyl group chain, the steric position and concentration of different amines and setting of solution as well as the UV-radiation. Their fluorescence quenching by concentration and by aromatic electron-donor N,N-dimethylaniline (DMA) were first investigated and determined.

关键词： C60 adduct aliphatic amines photoluminescence.

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Fluorescence Discrimination of Single-nucleotide Polymorphism Based on Pattern Recognition and Logic Gate Using an Abasic Site-containing DNA Probe and Fluorescent Ligands

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Fluorescence Discrimination of Single-nucleotide Polymorphis...