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Synthesis, characterization, and ethylene polymerization behaviors of late-transition metal complexes coordinated with chlorinated bis(arylimino)pyridine ligand 期刊论文  OAI收割
polymer, 2014, 卷号: 55, 期号: 18, 页码: 4611-4618
Liu, Heng; Wang, Feng; Liu, Li; Jai,Xiang-Yu; Zheng,Wenjie; Guo,Jun; Zhang,Chun-Yu; Bai,Chen-Xi; Hu,Yan-Ming; Zhang,Xue-Quan
收藏  |  浏览/下载:34/0  |  提交时间:2015/10/20
A series of late-transition metal complexes supported with chlorinated bis(arylimino)pyridine ligands [2  Ar = 2  Ar = 2  Ar = 2  Ar = 4-Cl-2  Ar = 4-Br-2  6-(ArN=CCl)(2)C5H3N]MtCl(2) (Ar = 2  6-(Pr2C6H3)-Pr-i  6-Et2C6H3  6-Me2C6H3  6-Me2C6H2  6-Me2C6H2  4  Mt = Fe (1b)  Mt = Co (1c)  Mt = Fe (1d)  Mt = Fe (1e)  Mt = Fe (1f)  6-Me3C6H2  Co (2b)  Ni (3c)  Co (2d)  Co (2e)  Co (2f)) were synthesized. At the presence of methylaluminoxane (MAO)  Mt = Fe (1a)  Fe(II)- and Co(II)- based complexes were highly active towards ethylene polymerization  Co (2a)  affording polymers with bimodal and unimodal molar. mass distributions  Ni (3a)  respectively  while the Ni(II)-based complexes gave no polymer products. Moreover  the obtained polyethylenes were predominately saturated and vinyl-terminated for Fe(II)- and Co(II)-based complexes  respectively. Changing the ligand environment  polymerization parameters also posed a great influence on the catalytic activities and the properties of the resulting polymers. (C) 2014 Elsevier Ltd. All rights reserved.  
一种治疗血栓性心脑血管疾病药物的化学全合成方法 专利  OAI收割
专利类型: 发明, 专利号: CN201010147871.8, 申请日期: 2011-04-20, 公开日期: 2011-04-20
史大永; 范晓; 卢伟伸; 郭书举; 李敬
收藏  |  浏览/下载:43/0  |  提交时间:2014/08/04
一种治疗血栓性心脑血管疾病药物的化学全合成方法  英文为:3?(2  其特征在于:所述的化合物合成路线为:(a)溴素与化合物1摩尔比为1∶1~1.1∶1  (b)碘甲烷与化合物2摩尔比为1∶1~1.5∶1  (c)80%水合肼  (d)高锰酸钾与化合物3摩尔比为1∶1~2∶1  (e)溴素与化合物5摩尔比为1.5∶1~3.5∶1  (f)化合物4∶化合物6摩尔比为1∶1  (g)N?溴代丁二酰亚胺与化合物7摩尔比为2.1∶1~2.5∶1  (h)碳酸钠  (i)硼氢化钠与化合物9摩尔比为0.5∶1~2∶1  (j)三溴化硼与化合物10摩尔比为6∶1~8∶1  化合物的化学结构式如下:化学名称中文为:3?(2  3?Dibromo?4  甲醇  碳酸钾  碳酸钾  碳酸氢钠  氢氧化钠  三氟乙酸酐  催化剂  1  乙醇  二氯甲烷  3?二溴?4  5?dihydroxyphenyl)?4?bromo?5  冰水浴  N  二甘醇  60~80℃  冰水浴  85%磷酸  四氯化碳  4?二氧六环与水体积比为1∶1  室温  0℃~室温。FSA00000065604600011.tif  5?二羟基苯基)?4?溴?5  6?dihydroxy?1  N?二甲基甲酰胺  110~130℃  0℃~室温  回流  90~100℃  FSA00000065604600012.tif  6?二羟基?1  3?dihydroisobenzofuran  室温  3?二氢异苯并呋喃  
抗2型糖尿病药物“海普诺”的化学全合成方法 专利  OAI收割
专利类型: 发明, 专利号: CN200910017839.5, 申请日期: 2011-03-23, 公开日期: 2011-03-23
史大永; 郭书举; 李敬
收藏  |  浏览/下载:25/0  |  提交时间:2014/08/04
一种抗2型糖尿病药物“海普诺”的化学全合成方法  (b)碘甲烷与化合物2摩尔比为1∶1~1∶1.5  (c)80%水合肼  (d)溴素与化合物3摩尔比为2∶1~3∶1  (e)硼氢化钠与化合物5摩尔比为1∶4~1∶3  (f)三氯化铝:化合物4:化合物6摩尔比为1∶1∶1  (g)N?溴代丁二酰亚胺与化合物7摩尔比为1.1∶1  (h)碳酸钾  (i)三溴化硼与化合物8摩尔比为6∶1~8∶1  (j)95%的乙醇  其特征在于:所述的化合物合成路线为:(a)溴素与化合物1摩尔比为1∶1  碳酸钾  氢氧化钾  乙酸  甲醇  二氯甲烷  催化剂  1  二氯甲烷  85%磷酸  甲醇  N  二甘醇  60~70℃  冰水浴  室温  四氯化碳  4?二氧六环与水体积比为1∶1  0℃  70~80℃。F2009100178395C0000011.tif  冰水浴  N?二甲基甲酰胺  110~120℃  光照  90~100℃  室温  
The synthesis and field emission property of carbon nanotubes on carbon fibers substrate (EI CONFERENCE) 会议论文  OAI收割
Technical Digest of the 20th International Vacuum Nanoelectronics Conference, IVNC 07, July 8, 2008 - July 12, 2008, Chicago, IL, United states
Leyong Z.; Weibiao W.; Jingqiu L.; Yuxue X.; Da L.; Song C.; Haifeng Z.
收藏  |  浏览/下载:33/0  |  提交时间:2013/03/25
Using ferrocene as catalyst precursor  C2H2 as carbon source  carbon nanotubes (CNTs) with uniform density were synthesized on carbon fibers substrate by floating catalyst method. The morphology and microstructure were characterized by field emission scanning electron microscope (FESEM) and high-resolution transmission electron microscopy (HRTEM). The observation showed that the length of CNTs is about 2 m  the average space between adjacent CNTs is about 300 nm and the diameter of CNT is about 45 nm. The less dense "short and stubby" aligned CNTs films should have good electron field emission characteristics. The results of field emission showed that the emission current of CNTs/carbon fibers was 5 A at the field of 2.5 V/m  and the emission current can be 280 A with a field of 7 V/m (the specimen area is 0.25 cm2 and the distance between cathode and anode is 200 m). The calculation based on the F-N plot indicated that the field enhancement factor of CNTs tip is 499122. Using the conductivity and chemical stability of carbon fibers and the uniform and sparse density distribution of CNTs on carbon fibers substrate  the tip predominance of carbon nanotubes can be exerted  and simultaneously the effect of screening effects between adjacent carbon nanotubes on the field emission performance can also be effectively decreased. The CNTs synthesized on carbon fibers substrate has many predominances for the fabrication of cold cathode devices. For example  using the removability of carbon fibers  the cathode of CNTs/carbon fibers can be arbitrarily moved  enlaced or combined to form different patterns  and the cathode of CNTs/carbon fibers can be also fabricated in large size. Therefore  CNTs/carbon fibers may have potential application in field emission displays.  
The effect of N/Si ratio on the a-SiiH/SiNx interface of a-SirH/SiNx TFT (EI CONFERENCE) 会议论文  OAI收割
Asia Display 2007, AD'07, March 12, 2007 - March 16, 2007, Shanghai, China
Liu J. e.; Gao W.; Liao Y.; Jing H.; Fu G.
收藏  |  浏览/下载:26/0  |  提交时间:2013/03/25
The threshold voltage of a-Si: H/SiNx TFT will shift under long time gate bias stress  it is mostly leaded by charge trapping in gate insulator and defect creation in semiconductor. And it is hard to be applied in AMOLED for TFT because of its threshold voltage shift. In allusion to the phenomenon of charge trapping  a series of SiNx insulating films in different N/Si(0. 87 -1.68) ratio were deposited by PECVD in this paper  controlling different flow ratio of source gas SiH4 and NH3  and a great deal of tests (ellipsometer  infrared absorption (FTIR) and Electron Dispersion Spectrum (EDS) test ) were done on these samples. Based on these SiNx insulators  three different capacitance samples in MIS structure were done  degraded experiments and C-V tests on these samples were done. The C-V curve shift of capacitance which contained SiNx with slightly N-rich(N/Si is bigger slightly than 1. 33) was not evident before and after degradation  this result indicated that the defect density of this type SiN x was smaller  and could restrain charge chapping in the interface of a-Si:H/SiNx effectively. So that as gate insulator of TFT  SiN x with slightly N-rich could decrease the threshold voltage shift of TFT and enhance its stability effectively.  
Raman spectroscopy of a-C : H : N films deposited using ECR-CVD with mixed gas 期刊论文  OAI收割
Applied Surface Science, 2007, 卷号: 253, 期号: 16, 页码: 6957-6962
F. X. Liu; K. L. Yao; Z. L. Liu
收藏  |  浏览/下载:64/0  |  提交时间:2012/04/13