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A New Monoterpene Glucoside from the Leaves of Betula platyphylla Suk.

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Chinese Chemical Letters 2001年第4期12卷 343-344页

作者： Su Juan WANG Yue Hu PEI hui ming hua Department of Natural Products Chemistry Shenyang Pharmaceutical UniversityShenyang 110015

A new monoterpene glucoside. (2E,67.)-2.6-dimethyl-8-beta -D-glucosyloxy-2,6-octadienoic acid, was isolated from the leaves of Betula platyphylla Suk. The structure was established by spectroscopic data.

关键词： Betula platyphylla Suk. monoterpene glucoside leaves.

A New Chromone Derivative from Stellera chamaejasme L

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Chinese Chemical Letters 2002年第8期13卷 738-739页

作者： Bao Min FENG Yue Hu PEI hui ming hua School of Traditional Chinese Medicines Shenyang Pharmaceutical UniversityShenyang 110016

A new chromone derivative, 3-[1- (2, 4, 6-trihydroxyphenyl) 3-di-(4-hydroxyphenyl) 1-propanone-2-yl] 5,7-dihydroxy-8-di(4-hydroxyphenyl)methyl-4H-1-benzopyran-4-one, named as isomohsenone was isolated from the roots of Stellera chamaejasme L. together with known chamaechromone. Its structure was determined by the analysis of MS and NMR data, especially 2D NMR spectra.

关键词： Stellera chamaejasme L. chromone 3-[1- (2, 4, 6-trihydroxyphenyl) 3-di-(4-hydroxy- phenyl)-1-propanone-2-yl] 5, 7-dihydroxy-8-di-(4-hydroxyphenyl) methyl-4H-1- benzopyran-4- one.

Anomalous response to creep deformation from dislocation density during electrically assisted creep aging

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Rare Metals 2024年第10期43卷 5268-5283页

作者： Chang Zhou Li-hua Zhan Chun-hui Liu ming-hui huang College of Mechanical and Electrical Engineering Central South University Light Alloys Research Institute State Key Laboratory of Precision Manufacturing for Extreme Service PerformanceCentral South University

Adding numerous dislocations into metallic materials before the forming stage significantly enhances their deformability. However, this beneficial effect of dislocation defects may not have a simple monotonic relationship with increased dislocation density during electroplastic deformation. This is due to the complex interactions among the drifting electrons, dislocations and solute atoms. This study explores the effect of diverse initial dislocation densities on creep deformation during electrically aided creep aging of an aluminum–lithium alloy. Surprisingly, we discovered a threshold value for the dislocation density that affects electroplastic creep, i.e., an enhanced effect from dislocations weakens when exceeding this density threshold(an anomalous response to creep). Microstructural data also reveal that such an anomalous response originates mainly from differences in various dislocation density-tailored configurations, which can influence the dislocation motions and precipitation kinetics of the strengthening T1precipitates under the same action of pulsed currents. This study provides important insights into the dislocation density-mediated electroplastic creep of an aluminum–lithium alloy.

关键词： Al–Cu–Li alloy Creep aging Dislocation density Pulsed currents

Kansuinine J,a new macrocyclic diterpenoid from the roots of Euphorbia kansui

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Chinese Chemical Letters 2010年第8期21卷 943-946页

作者： Jie Guo Xin Fang Ying Tong Di hui ming hua Xiao Jiang Hao Department of Natural Products Chemistry Shenyang Pharmaceutical University Shenyang 110016 China State Key Laboratory of Phytochemistry and Plant Resources in West China Kunming Institute of Botany Chinese Academy of Sciences Kunming 650204 China

A new macrocyclic diterpenoid,named kansuinine J（1）,was isolated from the roots of Euphorbia *** structure was characterized on the basis of spectroscopic analysis.

关键词： Euphorbia kansui Kansuinine J Macrocyclic diterpenoid

A New Macrocyclic Trichochecene from Soil Fungus

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Chinese Chemical Letters 2002年第1期13卷 67-68页

作者： Tao WANG Yi ZHANG Yue Hu PEI hui ming hua Bao Min FENG Department of Natural Products Chemistry Shenyang Pharmaceutical UniversityShenyang 110016

From fermentation broth of soil fungus 254-2 obtained from Yunnan province, a new macrocylic trichochecene was isolated. The structure was determined on the basis of spectroscopic evidences especially the 2-D NMR spe... 详细信息

关键词： Soil fungus macrocyclic trichochecene spectral data.

Improvement of the Injection and Transport Characteristics of Electrons in Organic Light-Emitting Diodes by Utilizing a NaC1 N-Doped Layer

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Chinese Physics Letters 2014年第4期31卷 178-181页

作者： XIAO Zhi-hui WU Xiao-ming hua Yu-Lin WANG Li BI Wen-Tao BAI Juan-Juan MU Xue YIN Shou-Gen School of Materials Science and Engineering Tianjin University of Technology Tianjin 300384Key Laboratory of Display Materials and Photoelectric Devices .Ministry of Education Tianjin 300384 Tianjin Key Laboratory of Photoelectric Materials and Devices Tianjin 300384

The injection and transport characteristics of electrons are enhanced by using sodium chloride （NaC1） as an n-type dopant doped into a 4, 7-diphnenyl-1, lO-phe-nanthroline （Bphen） electron-transporting layer, which improves the performance of organic light-emitting diodes （OLEDs）. Meanwhile, a NaCl-doped Bphen layer can effectively influence electrical characteristics of the devices, and significantly improve the current and power efficiency. The turn-on voltage and the operation voltage of the optimal device are decreased drastically from 6.5 V and 10.8 V to 3.3 V and 5 V, respectively, compared with those of the reference device. The maximum current efficiency and power efficiency of the optimal device are 7.0 cd/A and 4.4 Im/W at the current density of 16.70 mA/cm~, which are about I. 7 and 4 times higher than those of the reference device, respectively. Moreover, the enhancement of the injection and transport ability for electrons is attributed not only to the reduced energy barrier between A1 cathode and Bphen, but also to the increased mobility of electrons by the doping effect of NaCl. Therefore, both the electron injection and transport ability are enhanced, which improve the carrier balance in OLEDs and lead to the better device efficiency.

关键词： ORGANIC light emitting diodes SALT DOPING agents (Chemistry) ENERGY consumption ELECTRON mobility

A new cytotoxic caged polyprenylated xanthone from the resin of Garcinia hanburyi

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Chinese Chemical Letters 2008年第10期19卷 1221-1223页

作者： Li Li Wang Zhan Lin Li Yong Peng Xu Xiao Qiu Liu Yue Hu Pei Yong Kui Jing hui ming hua School of Traditional Chinese Materia Medica Shenyang Pharmaceutical University Shenyang 110016 China School of Life Science and Biopharmaceutics Shenyang Pharmaceutical University Shenyang 110016 China Department of Medicine Mount Sinai School of Medicine NY 10029-6547 USA

A new caged polyprenylated xanthone, gambogic aldehyde （1）, was isolated from the resin of Garcinia hanburyi. Its structure was elucidated on the basis of spectral data including 1D and 2D NMR data. In addition, the... 详细信息

关键词： Garcinia hanburyi Caged polyprenylated xanthone Antiproliferafive ability

Monomeric and self-assembled crystal phases of TNBT

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Rare Metals 2024年第10期43卷 5442-5448页

作者： Yun-hui Wu hua-Bei You Wei-Kai Cui Zhi-Qian Cao Xiao Dong Zi-hui Meng ming huang School of Chemistry and Chemical Engineering Beijing Institute of Technology Institute of Chemical Materials China Academy of Engineering Physics

（3,3′,5,5′-Tetranitro-4,4′-bi-1,2,4-Triazole） TNBT was designed and predicted more than three decades ago as a high energy *** with many other designed molecules,TNBT has not been successfully synthesized and has not been computationally studied in *** this work,theoretical calculations at density functional theory （DFT）level of theory were carried out for both the gas phase molecule and its possible bulk crystal *** （DFT） computations show that TNBT is comparable to CL-20 with high bulk density,

关键词： Density functional theory

Plasmon-enhanced ultra-high photoresponse of single-wall carbon nanotube/copper/silicon near-infrared photodetectors

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Nano Research 2024年第7期17卷 5930-5936页

作者： Yi-ming Zhao Xian-Gang Hu Chao Chen Zuo-hua Wang An-Ping Wu Hong-Wang Zhang Peng-Xiang Hou Chang Liu hui-ming Cheng Shenyang National Laboratory for Materials Science Institute of Metal ResearchChinese Academy of SciencesShenyang 110016China School of Materials Science and Engineering University of Science and Technology of ChinaShenyang 110016China National Engineering Research Center for Equipment and Technology of Cold Strip Rolling College of Mechanical EngineeringYanshan UniversityQinhuangdao 066004China Faculty of Materials Science and Engineering/Institute of Technology for Carbon Neutrality Shenzhen Institute of Advanced TechnologyChinese Academy of SciencesShenzhen 518055China

Single wall carbon nanotube(SWCNT)/Si heterojunction photodetectors have the advantages of high photoresponse ability and simple structure,however,their detection wavelength range are usually lower than 1100 nm,which limits their application in the infrared *** report a SWCNT/Cu/Si photodetector with both a high photoresponse and a detection range up to the infrared band by depositing a Cu nanoparticles(NPs)layer between a SWCNT film and a n-Si *** was found that the Cu NPs produce strong surface plasmon resonance(SPR)under laser irradiation,which breaks through the limitation of Si band gap and greatly improves the photoresponse of the SWCNT/Cu/Si photodetector in the near infrared *** responsivity(R)of the photodetector in the wavelength range of 1850–1200 nm reached 2.2–14.15 mA/W,which is the highest value in the reported plasmon enhanced n-Si based photodetectors,and about 20,000 times higher than that of a SWCNT/Si *** R value for 1550 nm wavelength used in optical communications reached~8.2 mA/W,which is 64%higher than the previously reported values of commonly used *** attribute the significant increase to the strong SPR and low Schottky barrier of Cu with n-Si,which facilitates the generation and transfer of the carriers.

关键词： single wall carbon nanotube photodetector silicon surface plasmon resonance copper