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Heat revolution on photophysical properties and electroluminescent performance of Ir(ppy)_3-doped bipolar host of oxadiazole derivatives attaching with inert group of tert-butyl moiety

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Science China Chemistry 2014年第6期57卷 849-856页

作者： WANG HongJiao LIU Chen MI BaoXiu sang jie LI Xin GAO ZhiQiang Jiangsu Engineering Centre for Flat-Panel Displays & Solid-state Lighting College of Materials Science & EngineeringNanjing University of Posts & Telecommunications Key Laboratory for Organic Electronics & Information Displays (KLOEID) Institute of Advanced Materials (IAM)Nanjing University ofPosts & Telecommunications

Two bipolar materials,2,5-bis(2-(9H-carbazole-9-yl)phenyl)-1,3,4-oxadiazole(o-CzOXD)and 2,5-bis(2-(3',6'-di-tert-butyl-9H-carbazole-9-yl)phenyl)-1,3,4-oxadiazole(tBu-o-CzOXD),were synthesized according to reported *** parallel study,it was demonstrated that introduction of inert tert-butyl group improved material thermal stability,even though this modification only had a slight influence to the photophysical and electrochemical properties of these materials.A comparative study focusing on effects of heat treatment was carried out on the quartz glass substrates with vacuum deposited films containing one of the bipolar host doped with 6 wt%fac-tris(2-phenylpyridinato-N,C2’)iridium(Ir(ppy)3).Results show that when the two samples were heated,the absorption,emission,and photo images of the host:dopant system changed,with the o-CzOXD suffering more severe degradation under high temperature,which is consistent with their thermal *** addition,it was proved that the high temperature-annealed host:dopant system can enhance the emission of the *** finding was used as a guideline to improve our device *** fabricated two types of phosphorescent organic light-emitting devices(PhOLEDs),one was based on o-CzOXD,the other was based on *** had analogous *** investigated the effect of heat on device performance by selectively *** these two freshly prepared devices exhibited similar performance,when annealed at 90°C for 10 min,the OLEDs based on tBu-o-CzOXD showed significant performance enhancement,which can be attributed to the observation that annealing Ir(ppy)3 doped host can change film morphology and enhance the dopant *** maximum efficiencies of the freshly prepared tBu-o-CzOXD device were 25.8 cd A-1,23.1lm W-1,and 9.3%;whereas those for annealed device were 47.0 cd A-1,42.2 lm W-1,and 13.4%.

关键词： OLED bipolar host emitting layer thermal stability inert group tert-butyl moiety

Modeling of 3D-structure for regular fragments of low similarity unknown structure proteins

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High Technology Letters 2007年第4期13卷 431-435页

作者：彭志红 Chen jie Lin Xiwen sang Yanchao School of Information Science and Technology Beijing Institute of Technology Beijing 100081 P.R. China

Because it is hard to search similar structure for low similarity unknown structure proteins directly from the Protein Data Bank （PDB） database, 3D-structure is modeled in this paper for secondary structure regular fragments （α-Helices, β-Strands） of such proteins by the protein secondary structure prediction software, the Basic Local Alignment Search Tool （BLAST） and the side chain construction software SCWRL3. First, the protein secondary structure prediction software is adopted to extract secondary structure fragments from the unknown structure proteins. Then, regular fragments are regulated by BLAST based on comparative modeling, providing main chain configurations. Finally, SCWRL3 is applied to assemble side chains for regular fragments, so that 3D-structure of regular fragments of low similarity unknown structure protein is obtained. Regular fragments of several neurotoxins are used for test. Simulation results show that the prediction errors are less than 0.06nm for regular fragments less than 10 amino acids, implying the simpleness and effectiveness of the proposed method.

关键词： low similarity unknown structure regular segment 3D-structure modeling main chain confonnation side chain assembly

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和谐社会视域下的生态问题探微

贵州民族研究 2007年第1期27卷 1-6页

作者：桑杰青海省人大常委会青海西宁810000

加强生态建设,保护自然资源和生态系统,维护生态安全,促进经济社会可持续发展,是人类社会发展的客观要求,正在成为当今世界的共识。通过加强生态建设构建生态文明,是当今人类社会孜孜以求的非传统模式的人口、经济、社会、环境和资源相... 详细信息

加强生态建设,保护自然资源和生态系统,维护生态安全,促进经济社会可持续发展,是人类社会发展的客观要求,正在成为当今世界的共识。通过加强生态建设构建生态文明,是当今人类社会孜孜以求的非传统模式的人口、经济、社会、环境和资源相互协调发展道路的本质与核心。

关键词：和谐社会生态文明

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我国宗教立法论要

世界宗教研究 2006年第1期 1-7+152页

作者：桑杰青海省人民代表大会常务委员会

中国共产党和中国政府历来重视对宗教事务作法律上的规定。依法管理宗教事务是我国新时期宗教工作的基本方针。新时期新阶段积极推进宗教立法应当以保护公民的宗教信仰自由、积极引导宗教与社会主义社会相适应以及抵制境外宗教渗透为宗... 详细信息

中国共产党和中国政府历来重视对宗教事务作法律上的规定。依法管理宗教事务是我国新时期宗教工作的基本方针。新时期新阶段积极推进宗教立法应当以保护公民的宗教信仰自由、积极引导宗教与社会主义社会相适应以及抵制境外宗教渗透为宗旨,坚持宗教信仰自由原则、独立自主自办原则以及政教分离原则。

关键词：中国共产党宗教立法宗教与社会主义

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和谐社会视域下的生态问题

毛泽东邓小平理论研究 2006年第8期 29-33页

作者：桑杰青海省人大常委会

关键词：和谐社会生态文明生态建设

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试论和谐民族观

贵州民族研究 2006年第5期26卷 1-4页

作者：桑杰青海省人大常委会青海西宁810000

就民族工作来说,建设社会主义和谐社会,必须树立与落实和谐民族观,处理好民族问题,做好民族工作。要以科学发展观为指导,在中国特色社会主义的伟大事业中,创建平等、团结、互助、和谐的社会主义民族关系,从而为构建社会主义和谐社会提... 详细信息

就民族工作来说,建设社会主义和谐社会,必须树立与落实和谐民族观,处理好民族问题,做好民族工作。要以科学发展观为指导,在中国特色社会主义的伟大事业中,创建平等、团结、互助、和谐的社会主义民族关系,从而为构建社会主义和谐社会提供坚实的民族基础。

关键词：民族和谐科学发展观中国特色社会主义

Molecular epidemiology of serotype 19A Streptococcus pneumoniae isolated from children in Beijing, 1997-2006

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Chinese Medical Journal 2011年第12期124卷 1769-1774页

作者： XUE Lian YAO Kai-hu YU sang-jie LIU Zun-jie QIAN Jing SHEN Xu-zhuang YANG Yong-hong Key Laboratory o(Major Diseases in Children and National KeyDiscipline of Pediatrics Ministry of Education Beijing PediatricResearch Institute Beijing Children's Hospital Affiliated to CapitalMedical University Beijing 100045 China

Background Despite the prevalence of Streptococcus pneumoniae serotype 19A, the molecular characteristics of this serotype are yet to be fully elucidated. The aim of this study was therefore to determine the homology of the serotype 19A in China. Methods Pulsed-field gel electrophoresis and multilocus sequence typing were done to these forty-nine serotype 19A isolates to investigate the relationship between the strains prevalent in Beijing and other regions. Results From 1997 to 2006, the percentage of serotype 19A isolates increased. The susceptibility rate to penicillin and amoxicillin decreased and the resistance rate to cefuroxime increased. ST320 was the most prevalent ST, followed by ST3546. There were six new STs identified in our study. The serotype 19A strains were classified into six different pulsed-field gel electrophoresis （PFGE） patterns. ST320, which was associated with two different PFGE patterns （A and D）, accounted for 32 isolates, and ST3546, which was associated with two PFGE patterns （B and E）, accounted for eight isolates. Conclusions From 2003 onwards, ST320 was the most common ST and the rate of resistance to cefuroxime increased significantly. Further long-term surveys of Streptococcus pneumoniae serotype 19A are required to monitor ST prevalence and antimicrobial resistance, in this important human pathogen.

关键词： Streptococcus pneumoniae microbial sensitivity tests molecular epidemiology