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PHOTOpolymerIZATION IN THE MICELLAR SYSTEMS Ⅳ THE PHOTOSENSITIZATION EFFECTS OF THE BENZOPHENONES WITH DIFFERENT CHARGE IN IONIC MICELLAR SYSTEMS

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高分子科学(英文版) 1988年第4期6卷 306-313页

作者：王尔鑑方培基冯新德 Institute of Photographic chemistry Academia Sinica department of chemistry peking university {2. beijing

The photosensitization effects of the benzophenone derivatives having different charges, such as cationic BP（BP—CH2.N+ （C2.5）3.r-）（PKT-1）, anionic BP（BP—COONa） and the neutral BP in the various ionic micellar systems were studied. From the photopolymerization of MMA initiated by the various BP/TEA in different micellar systems, the results obtained show that the polymerization rate is in the order of PKT-1>BP>BP—COONa in the SDS anionic micelle. On the contrary, the order changes to BP—COONa>BP>PKT-1 in the CTAB cationic mieelle, and to BP—COONa≈PKT-1>BP in the PKT-3.functional micelle. It is noteworthy that the PKT-1/SDS system is more efficient with its quantum yield more than 50 times compared with that of simple BP/H2. system.

关键词： Photopolymerization Functionalization Surfactant.

Doping-free carbon nanotube optoelectronic devices

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science Bulletin 2012年第Z1期 149-156页

作者： WANG Sheng*,ZHANG ZhiYong & PENG LianMao* Key Laboratory for the Physics and chemistry of Nanodevices,department of Electronics,{2. {3.,beijing 100871,china

Semiconducting carbon nanotubes(CNTs) possess outstanding electrical and optical properties because of their special one-dimen-sional(1D) *** are direct bandgap materials,which makes them ideal for use in optoelectronic devices,*** emitters and light *** determine their light absorption and light emission processes due to the strong Coulomb interactions between electrons and holes in *** this paper,we review recent progress in CNT photodetectors,photovoltaic devices and light *** particular,we focus on the doping-free CNT optoelectronic devices developed by our group in recent years.

关键词： carbon nanotube diode photodetector LED solar cell doping-free

PHOTOpolymerIZATION IN THE MICELLAR SYSTEMSⅡ THE CATALYSIS OF PKT FUNCTIONAL MICELLE

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Chinese Journal of polymer science 1988年第4期6卷 299-305页

作者：王尔鑑方培基冯新德 Institute of Photographic chemistry Academia Sinica department of chemistry peking university {2.

A kind of cationic compounds, having benzophenone end group and various length chain （PKT）（BP-CH2.+R2.’·X-, R&R’ different chain iength alkyl group） were used as photosensitizers. Various BP/TEA systems have been used for study, The efficiency of MMA photopolymerization initiated by them shows PKT>BP in homogeneous water solution and PKT> BP/CTAB in micellar water solution. The results obtained indicate that catalytic effects of PKT type functional micelles are far greater than that of common micelle with the enhancement of polymerization rate over 10 times compared with BP in water solution. The catalytic role, reaction character of PKT, effect of counter ions and retarding effect of oxygen have also been discussed.

关键词： Photopolymerization Functional micelle Benzophenone

Electrochemical performance of LiFePO_4 cathode material for Li-ion battery

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Rare Metals 2006年第Z1期25卷 62-66页

作者： LI Shuzhong LI Chao FAN Yanliang XU Jiaqiang WANG Tao YANG Shuting Engineering Research Centre for New Power Source Materials of Henan Province Xinxiang 453002 China Engineering Research Centre for New Power Source Materials of Henan Province Xinxiang 453002 China department of Applied chemistry College of Material Science and Chemical Engineering Zhengzhou Institute of Light Industry Zhengzhou 450002 China Department of Applied Chemistry College of Material Science and Chemical Engineering Zhengzhou Institute of Light Industry Zhengzhou 450002 China Department of Applied Chemistry College of Material Science and Chemical Engineering Zhengzhou Institute of Light Industry Zhengzhou 450002 China Engineering Research Centre for New Power Source Materials of Henan Province Xinxiang 453002 China Department of Chemical Engineering College of Chemistry and Environmental Science Henan Normal University Xinxiang 453007 China

In the search for improved materials for rechargeable lithium batteries, LiFePO4 offers interesting possibilities because of its low raw materials cost, environmental friendliness and safety. The main drawback with using the material is its poor electronic conductivity and this limitation has to be overcome. Here Al-doped LiFePO4/C composite cathode materials were prepared by a polymer-network synthesis technique. Testing of X-ray diffraction, charge-discharge, and cyclic voltammetry were carried out for its performance. Results show that Al-doped LiFePO4/C composite cathode materials have a high initial capacity, good cycle stability and excellent low temperature performance. The electrical conductivity of LiFePO4 material can be obviously improved by doping Al. The better electrochemical performances of Al-doped LiFePO4/C composite cathode materials have a connection with its conductivity.

关键词： lithium ion batteries LiFePO4 doping electrochemical performance

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Comparison of photovoltaic devices based on MEH-PPV with various molecular weights

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Chinese science Bulletin 2004年第21期49卷 2259-2261页

作者： KANG Bonan1,2. WANG Liduo1, YANG Yong1 & qiU Yong1 1. Key Laboratory of Organic Optoelectronics & Molecular Engineering of Ministry of Education, department of {2., Tsinghua Univer- sity, beijing 100084, china 2. State Key Laboratory on Integrated optoelectronics, Jilin university Region, Changchun 13.02., china Key Laboratory of Organic Optoelectronics & Molecular Engineering of Ministry of Education Department of Chemistry Tsinghua University Beijing China State Key Laboratory on Integrated optoelectronics Jilin University Region Changchun China

polymer photovoltaic devices based on poly (2. methoxy-5-(2. -ethyl-hexyloxy)-1,4-phenylene vinylene) (MEH- PPV) with three weight-average molecular weights (Mw) have been fabricated with the device structure of ITO/PEDOT/ MEH-PPV/Ca/Ag, and the effect of the molecular weight on photovoltaic properties has been investigated. The experi- mental results show that the high molecular weight of MEH- PPV leads to low series resistance (Rs) and high short-circuit current. The low molecular weight of MEH-PPV leads to high shunt resistance (Rsh) and high open-circuit voltage. When the molecular weight is 6×105, the highest power con- version efficiency was observed.

关键词： MEHPPV 分子量光电器件载流子迁移率串联电阻并联电阻聚(2.甲氧基-5-(2.-乙基-乙氧基)-1,4-亚苯基乙烯撑)

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Review on aggregation of acid extractants in solvent extraction of metal ions:remark on the general model

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Progress in Natural science:Materials International 2003年第1期 3-14页

作者： zhou Naifu and WU Jinguang (department of {2., {3. university, beijing 100871, china Charles S. Roberts Laboratory, Gilmer Tumham Building, Auburn 3.83., USA) department of chemistry，{2. {3.，beijing 100871，china Charles S. Roberts Laboratory，Gilmer Tumham Building，Auburn 3.83.，USA department of chemistry，{2. {3.，beijing 100871，china

Abstract The aggregation behavior of various acid extractants in the solvent extraction systems of metal ions is re-examined andexplained according to knowledge obtained in recent work. The conclusions are as follows. (1) Complexes formed by the extractants andmetal ions can form reversed micelles in organic diluents, depending on the microstructures of the complexes. The dimers of the acid ex-tractant cannot percolate to the metal-extractant aggregates, and the acid-salt complexes are always formed in the aggregates. The reversedmicelles or the W/O microemulsions formed by different species cannot be associated with each other to form a unified aggregate. (2. Insolvent extraction system, hydration of the extractants and metal ions can be considered as the driving force of forming reversed micelles.(3. Information of the first approach to the insight of the bicontinuous microemulsion of NaDEHP shows that various components in theaqueous phase behave confined and very similar to the typical AOT/n-heptane

关键词： liquid/liquid extraction complex aggregate reversed micelles W/O microemulsions.

THE EFFECTS OF MORPHOLINES ON METHYL METHACRYLATE RADICAL polymerIZATION

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Chinese Journal of polymer science 1986年第1期4卷 92-99页

作者：丘坤元沈一兵冯新德 department of chemistry peking university beijing

The effects of Morpholine, N-methyl morpholine, and N-ethyl morpholine on methyl methacrylatepolytherization initiated with organic peroxides were studied. The polymerization rate Rp, theoverall activation energy of p... 详细信息

关键词： NEMP MMP MMA THE EFFECTS OF MORPHOLINES ON METHYL METHACRYLATE RADICAL polymerIZATION BPO LPO

STUDIES ON THERMOTROPIC LIQUID CRYSTALLINE COPOLYESTERS:POLY (ARYLENE TEREPHTHALATECO-HEXAMETHYLENE TEREFHTHALATE)

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Chinese Journal of polymer science 1988年第2期6卷 123-128页

作者：张鸿志汪平平冯新德 department of chemistry peking university beijing

A series of copolyesters based on terephthaloyl chloride, hexamethylene glycol and hydroquinone or chlorohydroquinone were prepared. The copolymers showed composition-dependent liquid crystalline properties as verified by visual observation of stir-opalescence, polarizing microscope and DSC. The copolyesters with aromatic diol contents over a certain extent (x≥0.2. were thermotropic with wide liquid crystalline temperature ranges. Comparing with the copolyesters based on butylene glycol or ethylene glycol, the minimum fraction of aromatic diol (x value) used to get the liquid crystallinity for all these copolyesters is around 0.2.regardless of the chain lengths of aliphatic glycols. ~1H-NMP studies revealed that copolyesters have microstructure of block sequence distribution and the mesogenie segments shorter than triad with three phenyl nuclei will not provide the liquid crystallinity.

关键词： Liquid crystalline copolyesters Poly(arylene terephthalate-co-hexamethylene terephthalate) Minimum mesogenic fraction Sequence distribution Microstrueture parameters/

Nondestructive technique for identifying nuclides using neutron resonance transmission analysis at CSNS Back-n

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Nuclear science and Techniques 2024年第1期35卷 178-187页

作者： Sheng-Da Tang Yong-Hao Chen Jing-Yu Tang Rui-Rui Fan qiang Li Gong Li Dong Liu Zheng-Yao Jin Xing-Zhu Cui Tian-Xiang Chen Yi-Wei Yang Rong Liu Han Yi Yang Li Zhen Yang qi An Hao-Fan Bai Jiang-Bo Bai Jie Bao Ping Cao qi-Ping Chen Zhen Chen Zeng-qi Cui An-Chuan Fan Chang-qing feng Fan-Zhen feng Ke-qing Gao Min-Hao Gu Chang-Cai Han Zi-Jie Han Guo-Zhu He Yong-Cheng He Yang Hong Yi-Wei Hu Han-Xiong Huang Wei-Hua Jia Hao-yu Jiang Wei Jiang Zhi-jie Jiang Ling Kang Bo Li Chao Li Jia-Wen Li Xiao Li Jie Liu Shu-Bin Liu Guang-Yuan Luan Chang-Jun Ning Bin-Bin qi Jie Ren Zhi-zhou Ren Xi-Chao Ruan Zhao-Hui Song Kang Sun Zhi-Xin Tan Li-Jiao Wang Peng-Cheng Wang Zhao-Hui Wang Zhong-Wei Wen Xiao-Guang Wu Xuan Wu Li-Kun Xie Yong-Ji Yu Guo-Hui Zhang Lin-Hao Zhang Mo-Han Zhang qi-Wei Zhang Xian-Peng Zhang Yu-Liang Zhang Yue Zhang Zhi-Yong Zhang Mao-Yuan Zhao Lu-Ping zhou Zhi-Hao zhou Ke-Jun Zhu Sino-French Institute of Nuclear Engineering and Technology Sun Yat-sen UniversityZhuhai 519082China Institute of High-Energy Physics Chinese Academy of Sciences(CAS)Beijing 100049China Spallation Neutron Source science Center Dongguan 523803China School of Nuclear science and Technology University of Science and Technology of ChinaHefei 230026China State Key Laboratory of Particle Detection and Electronics University of Science and Technology of ChinaHefei 230026China State Key Laboratory of Particle Detection and Electronics Institute of High Energy PhysicsChinese Academy of SciencesBeijing 100049China USTC Archaeometry Laboratory University of Science and Technology of ChinaHefei 230026China Institute of Nuclear Physics and chemistry China Academy of Engineering PhysicsMianyang 621900China department of Modern Physics University of Science and Technology of ChinaHefei 230026China State Key Laboratory of Nuclear Physics and Technology School of PhysicsPeking UniversityBeijing 100871China Key Laboratory of Nuclear Data China Institute of Atomic EnergyBeijing 102413China Northwest Institute of Nuclear Technology Xi’an 710024China university of Chinese Academy of sciences Beijing 100049China

Nondestructive and noninvasive neutron assays are essential applications of neutron *** resonance transmission analysis(NRTA)is a powerful nondestructive method for investigating the elemental composition of an *** back-streaming neutron line(Back-n)is a newly built time-of-flight facility at the china Spallation Neutron Source(CSNS)that provides neutrons in the eV to 3.0 MeV range.A feasibility study of the NRTA method for nuclide identification was conducted at the CSNS Back-n via two test *** results demonstrate that it is feasible to identify different elements and isotopes in samples using the NRTA method at *** study reveals its potential future applications.

关键词： CSNS White neutron beam NRTA Nuclide identification Nondestructive method

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