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Improved Performance of Pentacene Organic Field-Effect Transistors by Inserting a V_(2)O_(5) Metal Oxide Layer

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Chinese Physics Letters 2011年第12期28卷 235-238页

作者： ZHAO Geng CHENG xiao-Man TIAN Hai-Jun DU Bo-Qun liang xiao-yu School of Science Tianjin University of TechnologyTianjin 300384 Institute of Material Physics Key Laboratory of Display Material and Photoelectric Devices(Ministry of Education)and Tianjin Key Laboratory of Photoelectric Materials and DevicesTianjin University of TechnologyTianjin 300384

We fabricate pentacene-based organic field effect transistors(OFETs),inserting a transition metal oxide(V_(2)O_(5))layer between the pentacene and Al source−drain(S/D)*** performance of the devices with V_(2)O_(5)/Al S/D electrodes is considerably improved compared to the pentacene−based OFET with only Al S/D *** the 10-nm V2O5 layer modification,the effective field-effect mobility of the devices increases from 2.7×10^(−3) cm^(2)/V⋅s to 8.93×10−1 cm^(2)/V⋅*** to the change of the injection property,the effective threshold voltage(Vth)is changed from−7.5 V to−5 V and the on/off ratio shifts from 102 to ***,the dispersion of sub−threshold current in the devices *** performance improvements are ascribed to the low carrier injection barrier and the reduction of contact *** is indicated that V2O5 layer modification is an effective approach to improve pentacene-based OFET performance.

关键词： drain injection effect

Performance Improvement of Ambipolar Organic Field Effect Transistors by Inserting a MoO_(3) Ultrathin Layer

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Chinese Physics Letters 2012年第9期29卷 222-225页

作者： TIAN Hai-Jun CHENG xiao-Man ZHAO Geng liang xiao-yu DU Bo-Qun WU Feng Institute of Material Physics Key Laboratory of Display Material and Photoelectric Devices(Ministry of Education)and Tianjin Key Laboratory of Photoelectric Materials and DevicesTianjin University of TechnologyTianjin 300384 School of Science Tianjin University of TechnologyTianjin 300384

We fabricate N,N'-ditridecylperylene-3,4,9,10-tetracarboxylic diimide and pentacene heterostructure organic field effect transistors with a MoO_(3) ultrathin layer between Al source-drain electrode and active *** inserting the MoO_(3) layer,the injection barrier of hole carriers is lowered and the contact resistance is ***,the performance of the device is *** device shows typical ambipolar transport characteristics with effective hole mobility of 4.838×10^(-3) cm^(2)/V·s and effective electron mobility of 1.909×10^(-3) cm^(2)/V·s,*** result indicates that using a MoO_(3) ultrathin 1ayer is an effective way to improve the performance of ambipolar organic field effect transistors.

关键词： bipolar drain MoO

唐山市基于GIS的PM2.5空间聚集性及分区管控

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中国环境科学 2020年第2期40卷 513-522页

作者：刘靖单春艳梁晓宇南开大学环境科学与工程学院天津300071

以ArcGIS软件为平台,采用唐山市206个在线监测点数据,分析了PM2.5在采暖期、重污染期、非采暖期3个时期的全局和局部空间自相关性,研究其大气污染空间分布特征.结果表明,3个时期均具有一定的空间自相关性,且重污染期的全局空间自相关最... 详细信息

以ArcGIS软件为平台,采用唐山市206个在线监测点数据,分析了PM2.5在采暖期、重污染期、非采暖期3个时期的全局和局部空间自相关性,研究其大气污染空间分布特征.结果表明,3个时期均具有一定的空间自相关性,且重污染期的全局空间自相关最强;采暖期和重污染期PM2.5高值聚类主要发生在中部地区,低值聚类则主要分布在北部山区及沿海少部分区域;非采暖期高值聚类主要分布在丰润区和丰南区,低值聚类发生在遵化市北部地区.通过空间插值模拟全市的PM2.5分布状况,结果显示唐山市在重污染期PM2.5均值最高格点值达241μg/m3,而非采暖期最低值只有37μg/m3;基于PM2.5浓度变化特征和空间分布,将唐山所辖18个区县划分为5个区域,针对各区域提出PM2.5分区管控措施建议.

关键词： GIS PM2.5 空间聚集性分区唐山空间自相关

一种用于检测PO_(4)^(3-)离子、Fe^(3+)离子和硝基芳香爆炸物的水稳定发光Zn⁃配合物传感器

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无机化学学报 2022年第6期38卷 1146-1158页

作者：贾月皎梁晓宇胡明内蒙古大学化学化工学院呼和浩特010021

基于3-(2,4-二羧基苯基)-6-羧基吡啶配体(H_(3)dpcp),利用溶剂热法制备了发光配合物[Zn(H_(2)dpcp)_(2)(H_(2)O)_(2)]·H_(2)O(1)。配合物1具有新颖的单核蝴蝶状结构,通过π…π相互作用延伸成三维超分子结构。实验结果表明,配合物1在pH... 详细信息

基于3-(2,4-二羧基苯基)-6-羧基吡啶配体(H_(3)dpcp),利用溶剂热法制备了发光配合物[Zn(H_(2)dpcp)_(2)(H_(2)O)_(2)]·H_(2)O(1)。配合物1具有新颖的单核蝴蝶状结构,通过π…π相互作用延伸成三维超分子结构。实验结果表明,配合物1在pH=1~10的水溶液中表现出优异的发光稳定性。值得注意的是,配合物1不仅可以利用荧光增强效应高选择性和可循环性地检测PO_(4)^(3-)离子,并且Fe^(3+)离子可以使配合物1的发光显著猝灭。对硝基芳香族爆炸物的荧光传感实验表明,配合物1可以作为发光探针高选择性、灵敏性地检测2,4,6-三硝基苯酚(TNP),同时具有较低的检测限。此外,还详细探究了配合物1对上述分析物的发光传感机理。

关键词：发光探针锌配合物磷酸根离子 2,4,6-三硝基苯酚

Single incision laparoscopic liver resection： a case report

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Chinese Medical Journal 2010年第18期123卷 2619-2620页

作者： CAI Xiu-jun ZHU Zhi-yi liang xiao yu Hong WANG Yi-fan HE Ji-kai LI Zhe-yong Institute of Micro-Invasive Surgery of Zhejiang University Department of General Surgery Sir Run Run Shaw Hospital College of Medicine Zhejiang University Hangzhou Zhejiang 310016 China

Laparoscopic procedure as a minimally invasive surgery has been introduced into many abdominal surgeries. Smaller incisions of the abdominal wall reduce postoperative pain and the risk of wound complications, and provide an excellent cosmetic result compared with open surgery. Natural orifice transluminal endoscopic surgery （NOTES）, a no-scar surgery, is a hot spot of modern surgery. However,

关键词： single incision laparoscopic liver resection

Multivariable analysis of factors associated with hospital readmission following pancreaticoduodenectomy for malignant diseases

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Chinese Medical Journal 2011年第7期124卷 1022-1025页

作者： ZHU Zi-yi HE Ji-kai WANG Yi-fan liang xiao yu Hong WANG Xian-fa CAI Xiu-jun Institute of Micro-Invasive Surgery of Zhejiang University Department of General Surgery Sir Run Run Shaw HospitalCollege of Medicine Zhejiang University Hangzhou Zhejiang310016 China

Background Readmission rates after pancreaticoduodenectomy （PD） for malignant diseases have a significant impact on survival rate. Identification of risk factors for readmission may improve discharge plans and postoperative care. Data exist on the morbidity and mortality of patients undergoing PD, but there are few reports about hospital readmissions after this procedure. Our aims were to evaluate the proportion and reasons for readmissions after PD for malignant diseases, the factors influencina readmissions, and to analyze the. r~.latinn^hin hAtwAAn r^dmi^inn r^fa ~nrl ~lln/i~,~l r^t~

关键词： pancreaticoduodenectomy readmission complications survival rate

Sensitized photorehox reaction——Ⅴ.The complcxation of zincte traphenylporphyrin sulfonate with viologens and its role in the sensitized photoreduction of methyl viologen

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Acta Chimica Sinica(English Edition) 1987年第4期 349-351页

作者： WANG Xiu-Zhi liang xiao-Guang CHEN yu-Yi Institute of Photographic Chemistry,Academia Sinica,Beijing

Photolysis of water to yield molecular hydrogen and oxygen is one of the most promis-ing means converting solar energy to chemical *** has been demonstrated that in thepresence of a catalyst,methyl viologen cation radical（MV+）,a product derived from the sen-sitized photoreduction of methyl viologen(MV2+),can reduce water successfully to yield hy-drogen *** aqueous solution,the efficiency of zinc tetramethylpyridylporphyrin（ZnTMPyP）in sensitizing photoreduction of MV2+ is much higher as compared with zinc te-traphenylporphyrin sulfonate（ZnTPPS）.This phenomenon can best be explained by *** of a photo-inert complex between the negatively charged ZnTPPS and the positively

关键词： Sensitized photorehox reaction The complcxation of zincte traphenylporphyrin sulfonate with viologens and its role in the sensitized photoreduction of methyl viologen MV

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唐山一次冬季重污染过程污染特征及成因分析

中国环境科学 2019年第5期39卷 1804-1812页

作者：梁晓宇单春艳孟瑶刘靖南开大学环境科学与工程学院天津300071

选取河北省唐山市2017年12月27～31日一次典型重污染过程,开展其污染特征及成因分析,对污染期间气象要素、大气颗粒物组分特征进行综合研究.结果表明,此次大气重污染过程中PM_(2.5)平均质量浓度为154μg/m^3,重度污染及以上时PM_(2.5)/P... 详细信息

选取河北省唐山市2017年12月27～31日一次典型重污染过程,开展其污染特征及成因分析,对污染期间气象要素、大气颗粒物组分特征进行综合研究.结果表明,此次大气重污染过程中PM_(2.5)平均质量浓度为154μg/m^3,重度污染及以上时PM_(2.5)/PM_(10)为0.7;PM_(2.5)中SNA质量浓度占比达58.0%,OC/EC的比值为4.1,说明颗粒物二次反应和有机物在此次污染过程有较大贡献;长期均压场以及近地面高湿、小风、逆温的出现导致唐山地区大气层结稳定,加之周边地区区域传输的贡献,是导致此次大气重污染过程的重要影响因素.

关键词：重污染 PM2.5 唐山市污染特征水溶性无机离子

Cloning, Expression, Purification and Crystallization of NHR3 Domain from Acute Myelogenous Leukemia-related Protein AML1-ETO

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Acta Biochimica et Biophysica Sinica 2004年第8期36卷 566-570页

作者： Hai-Tao YANG , Dong-Hui WU1 , xiao-yu XUE, Wen-Xue liang1, xiao-yu MIAO,Hai PANG , and Sai-Juan CHEN1Laboratory of Structural Biology, Department of Biological Sciences and Biotechnology & Protein Sciences Laboratory of MOE, Tsinghua University, Beijing 100084, China Shanghai Institute of Hematology, State Key Laboratory of Medical Genomics,1 Shanghai Second Medical University, Shanghai 200023, China Laboratory of Structural Biology Department of Biological Sciences and Biotechnology & Protein Sciences Laboratory of MOE Tsinghua UniversityBeijing 100084 China Shanghai Institute of Hematology State Key Laboratory of Medical Genomics Shanghai Second Medical UniversityShanghai 200023 China

The t(8;21) translocation is one of the most frequent chromosome abnormalities in acute myeloid leukemia. This translocation creates a fusion between the acute myelogenous leukemia 1 (AML1, a transcription factor) gene on chromosome 21 and the eight-twenty-one (ETO, a zinc finger nuclear protein) gene on chromosome 8, leading to the repression of certain AML1 target genes. We cloned NHR3 domain coding fragment into vector pGEX-6p-1 using PCR and obtained recombinant plasmid pGEX-6p-1-NHR3, which can be induced to stably overexpress fusion protein in E. coli. Through the purification on GST affinity chromatography column and PreScission protease cleavage, a large amount of NHR3 protein with high purity was obtained. In order to avoid possible interference of some strong negative charged molecules, NHR3 protein was further purified by Mono Q anion exchange chromatography. The NHR3 crystals were grown with hanging drop/vapor diffusion method and the first crystals appeared after four weeks at 18 °C in 0.2 M Tris-sodium citrate dihydrate, 0.1 M sodium cacodylate, pH 6.5, and 30% iso-propanol (V/V). ESI mass spectrum showed that the molecular weight of this domain was in agreement with its primary structure sequence prediction, and circular dichroism spectral data (190–250 nm) showed that NHR3 had a well-defined secondary structure of 25.9% α-helix, 23.2% random coil and 50.9% turn, which was consistent with GOV4 software prediction.

关键词： AML1-ETO NHR3 crystallization ESI mass spectrum circular dichroism spectrum glutathione S-transferase (GST)