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Copper-induced formation of heterostructured Co_(3)O_(4)/CuO hollow nanospheres towards greatly enhanced lithium storage performance

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Chinese Chemical Letters 2024年第2期35卷 594-598页

作者： Junjun Zhang Huiying Lu Tianhao Yao Xin Ji Qingmiao Zhang lingjie meng Jianmin Feng Hongkang Wang College of Geography & Environment Xianyang Normal UniversityXianyang 712000China State Key Lab of Electrical Insulation and Power Equipment Center of Nanomaterials for Renewable Energy (CNRE)School of Electrical EngineeringXi'an Jiaotong UniversityXi'an 710049China School of Chemistry Xi'an Key Laboratory of Sustainable Energy Material Chemistryand Instrumental Analysis CenterXi'an Jiaotong UniversityXi'an 710049China

We report a facile template-free fabrication of heterostructured Co_(3)O_(4)/CuO hollow nanospheres using pre-synthesized Co/Cu-glycerate as conformal *** introduction of copper nitrate in the solvothermal reaction system of glycerol/isopropanol/cobalt nitrate readily induces the conversion from solid Co-glycerate to hollow Co/Cu-glycerate nanospheres,and the effect of the Co/Cu atomic ratio on the structure evolution of the metal glycerates as well as their corresponding oxides were *** examined as anode materials for lithium-ion batteries,the well-defined Co_(3)O_(4)/CuO hollow nanospheres with Co/Cu molar ratio of 2.0 demonstrate excellent lithium storage performance,delivering a high reversible capacity of 930 mAh/g after 300 cycles at a current density of 0.5 A/g and a stable capacity of 650 mAh/g after 500 cycles even at a higher current density of 2.0 A/g,which are much better than their counterparts of bare CuO and Co_(3)O_(4).The enhanced lithium storage performance can be attributed to the synergistic effect of the CuO and Co_(3)O_(4)heterostructure with hollow spherical morphology,which greatly enhances the charge/electrolyte transfer and effectively buffers the volume changes upon lithiation/delithiation cycling.

关键词： Lithium-ion batteries Co/Cu-glycerate Hollow nanospheres Co_(3)O_(4)/CuO heterostructure Electrochemical properties

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‘Hierarchical self-assembly’ of helical amylose/SWNTs complex

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Science China Chemistry 2008年第3期51卷 269-274页

作者： FU ChuanLong meng lingjie LU QingHua School of Chemistry and Chemical Technology Shanghai Jiaotong UniversityShanghai 200240China

Helical amylose/SWNTs complexes (A/S-C) of various sizes, a single nanotube wrapped by amylose in particular, were demonstrated. The formation process of the helical A/S-C was further explained by a novel hierarchical self-assembly model, including the wrapping of amylose chains around SWNT and the hierarchical self-assembly of wrapped-SWNTs into the superstructural A/S-C. Besides the hydrophobic interaction, the hydrogen bonding also plays a certain role in the self-assembly process.

关键词： self-assembly SWNT amylose helical hydrogen bonding

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Synthesis of Poly (3-acetylpyrrolyl methine) with Azobenzene Side Groups and Study on Its Third-order Nonlinear Optical Property

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Journal of Materials Science & Technology 2005年第5期21卷 715-718页

作者： Zhigang ZHANG Hongcai WU lingjie meng Wenhui YI Institute of Photoelectric Technology and Solar Energy School of Electronic and Information Engineering Xi'an JiaotongUniversity Xi'an 710049 China Department of PDP IRICO Group Electronics Company Limited Beijing 100085 China

A novel soluble π-conjugated polymer, poly [（3-acetylpyrrole-2, 5-diyl） p-（N, N-dimethylamino） azobenzylidene] （PAPDMAABE）, was synthesized by condensation of 3-acetylpyrrole with 4-aldehyde-4＇-dimethylaminoazobenzene （ADMAA）. The chemical structure of PAPDMAABE was characterized by Fourier transform infrared spectroscopy （FTIR）, ^1H-NMR, and UV-Vis-NIR spectra. Transmission electron microscope （TEM） analysis for PAPDMAABE indicates that part of PAPDMAABE is in crystal state, due to the short-range order of the polymer. Thermogravimetric analysis （TGA） curve shows that the polymer has good thermal stability and its decomposition temperature is 248℃. The optical band gap of PAPDMAABE obtained from the optical absorption spectrum is about 1.73 eV. The resonant third-order nonlinear optical property of PAPDMAABE at 532 nm was studied using degenerate four-wave mixing （DFWM） technique. The resonant third-order nonlinear optical susceptibility of the polymer is about 7.48×10^-8 esu.

关键词： Poly [(3-acetylpyrrole-2, 5-diyl) p-(N, N-dimethylamino) azobenzylidene] Small optical band gap Degenerate four-wave mixing Third-order nonlinear property

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8,4′-Oxyneolignane glucosides from an aqueous extract of“ban lan gen”(Isatis indigotica root)and their absolute configurations

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Acta Pharmaceutica Sinica B 2017年第6期7卷 638-646页

作者： lingjie meng Qinglan Guo Yufeng Liu Jiangong Shi State Key Laboratory of Bioactive Substance and Function of Natural Medicines Institute of Materia MedicaChinese Academy of Medical Sciences and Peking Union Medical CollegeBeijing 100050China

Three pairs of glycosidic 8,4′-oxyneolignane diastereoisomers, named isatioxyneolignosides A-F(1–6), were isolated from an aqueous extract of Isatis indigotica roots. Their structures and absolute configurations were elucidated by comprehensive spectroscopic data analysis and enzyme hydrolysis. The validity of Δδ_(C8-C7) values to distinguish threo and erythro aryl glycerol units and Cotton effects at 235±5 nm to determine absolute configurations at C-8 in 1–6 and their aglycones(1a–6a) are discussed.

关键词： Cruciferae Isatis indigotica Isatioxyneolignosides A-F 8,4′-Oxyneolignane Threolerythro Isomers ΔδC8-C7 value Absolute configuration Cotton effect

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土茯苓中8个成分的含量测定及化学计量学分析

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中国药房 2024年第19期35卷 2378-2382页

作者：邹惠亮王新财陈柯崔虹孟令杰刘百联陈敏湖州市食品药品检验研究院浙江湖州313000 遵义医科大学生命科学研究院贵州遵义563000 暨南大学药学院中药及天然药物研究所广州510632

目的为土茯苓药材的质量控制提供依据。方法采用超高效液相色谱法同时测定不同产地20批(编号S1~S20)土茯苓中5-O-咖啡酰基莽草酸、新落新妇苷、落新妇苷、新异落新妇苷、异落新妇苷、黄杞苷、白藜芦醇、异黄杞苷的含量。采用化学计量... 详细信息

目的为土茯苓药材的质量控制提供依据。方法采用超高效液相色谱法同时测定不同产地20批(编号S1~S20)土茯苓中5-O-咖啡酰基莽草酸、新落新妇苷、落新妇苷、新异落新妇苷、异落新妇苷、黄杞苷、白藜芦醇、异黄杞苷的含量。采用化学计量学方法对20批土茯苓样品进行评价,并筛选影响土茯苓质量的差异标志物。结果所测8个成分在各自检测质量浓度范围内线性关系良好(r≥0.999 6);精密度、重复性和稳定性(24 h)试验的RSD均小于2.00%(n=6);平均加样回收率为97.60%~106.40%,RSD均小于2.00%(n=6)。聚类分析结果显示,浙江产(S1~S5)和江西产(S6~S10)样品聚为一类,湖南产(S11~S15)样品聚为一类,云南产(S16~S20)样品聚为一类;主成分分析结果显示,前2个主成分可反映土茯苓中8个成分85.60%的信息量;偏最小二乘-判别分析结果显示,5-O-咖啡酰基莽草酸、落新妇苷、异落新妇苷和新落新妇苷的变量重要性投影值均大于1。结论不同产地土茯苓中上述8个成分含量存在差异,5-O-咖啡酰基莽草酸、落新妇苷、异落新妇苷和新落新妇苷可能是影响土茯苓质量的差异标志物。

关键词：土茯苓化学计量学含量测定超高效液相色谱法 5-O-咖啡酰基莽草酸落新妇苷异落新妇苷新落新妇苷

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Isatindolignanoside A, a glucosidic indole-lignan conjugate from an aqueous extract of the Isatis indigotica roots

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Chinese Chemical Letters 2018年第8期29卷 1257-1260页

作者： lingjie meng Qinglan Guo Minghua Chen JiANDong Jiang Yuhuan Li Jiangong Shi State Key Laboratory of Bioactive Substance and Function of Natural Medicines Institute of Materia Medica Chinese Academy of Medical Sciences and Peking Union Medical College

A glucosidic indole-lignan conjugate with a novel carbon skeleton, named isatindolignanoside A（1）, was isolated from an aqueous extract of the Isatis indigotica roots ＂ban lan gen＂. Its structure was elucidated by comprehensive analysis of spectroscopic data, including J-and NOESY correlation-based configurational analysis, circular dichroism（CD） data, enzyme hydrolysis, and theoretical ECD calculation. In a preliminary assay, compound 1 showed antiviral activity against Coxsackie virus B3. This compound is the first example of natural product having a structural feature of conjugation between indole and lignan units, and its biosynthetic pathway is postulated.

关键词： Isatis indigotica Cruciferae Ban lan gen Indole-lignan conjugate Isatindolignanoside A Antiviral activity

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Indole alkaloid sulfonic acids from an aqueous extract of Isatis indigotica roots and their antiviral activity

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Acta Pharmaceutica Sinica B 2017年第3期7卷 334-341页

作者： lingjie meng Qinglan Guo Yufeng Liu Minghua Chen Yuhuan Li Jiandong Jiang Jiangong Shi State Key Laboratory of Bioactive Substance and Function of Natural Medicines Institute of Materia MedicaChinese Academy of Medical Sciences and Peking Union Medical CollegeBeijing 100050China

Six new indole alkaloid sulfonic acids(1–6), together with two analogues(7 and 8) that were previously reported as synthetic products, were isolated from an aqueous extract of the Isatis indigotica root. Their structures including the absolute configurations were determined by spectroscopic data analysis, combined with enzyme hydrolysis and comparison of experimental circular dichroism and calculated electronic circular dichroism spectra. In the preliminary assay, compounds 2 and 4 showed antiviral activity against Coxsackie virus B3 and influenza virus A/Hanfang/359/95(H3N2), respectively.

关键词： Cruciferae Isatis indigotica Indole alkaloid sulfonic acids Isatibis indosulfonic acids Isatindosulfonic acids Antiviral activity

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Recent advances in surface endothelialization of the magnesium alloy stent materials

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Journal of Magnesium and Alloys 2023年第1期11卷 48-77页

作者： Changjiang Pan Xuhui Liu Qingxiang Hong Jie Chen Yuxin Cheng Qiuyang Zhang lingjie meng Juan Dai Zhongmei Yang Lingren Wang Faculty of Mechanical and Material Engineering Jiangsu Provincial Engineering Research Center for Biomaterials and Advanced Medical DevicesHuaiyin Institute of TechnologyHuai’an 223003China The Affiliated Huai’an Hospital of Xuzhou Medical University Huai’an 223003China

Magnesium and its alloy have good mechanical properties and biodegradability,and have become the hotspot of the next-generation biodegradable vascular stent ***,their rapid degradation in vivo and poor biocompatibility are still the bottlenecks of clinical applications for the cardiovascular *** particular,how to induce the repair and regeneration of the vascular endothelial with normal physiological functions on the surface of the magnesium alloy stent materials represents the key to its clinical application in the field of cardiovascular *** has been believed that it is an ideal way to completely solve the postoperative complications through constructing the multifunctional anti-corrosive bioactive coating on the magnesium alloy surface to induce the formation of vascular endothelium with normal physiological ***,how to construct a corrosion-resistant multifunctional bioactive coating with the good endothelial regeneration abilities on the magnesium alloy surface still faces a great *** paper mainly focused on highlighting and summarizing the recent advances in the surface endothelialization of the magnesium alloy materials for the vascular stent,including the bio-inert coating,in-situ immobilization of bioactive molecules on the surface,polymer coating loaded with bioactive factors,novel multifunctional polymer coating,bioactive micropatterns,bioactive layer with glycocalyx-like structure,NO-releasing coating and bioactive sol-gel *** advantages and disadvantages of these strategies were discussed and ***,in the senses of future development and clinical application,this paper analyzed and summarized the development direction and prospect of surface endothelialization of the magnesium alloy vascular *** is anticipated that this review can give the new cues to the surface endothelialization of the cardiovascular magnesium alloy stents and promote future advancements in this field.

关键词： Magnesium alloy Stent Endothelialization Surface coating Surface modification

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椒目的本草考证

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中国药师 2024年第2期27卷 357-364页

作者：段禹彤杨钧涵冉明隋家欣孟令杰孙婉萍辽宁中医药大学药学院辽宁大连116600

通过查阅相关文献和历代本草著作,对椒目的名称、基原产地及采收、功效主治、性味归经等方面进行综述。椒目作为药材名始载于《本草经集注》,后世也多以“椒目”作为正名;椒目为芸香科植物花椒或青椒的种子,秋季8~10月成熟时采摘,炮制... 详细信息

通过查阅相关文献和历代本草著作,对椒目的名称、基原产地及采收、功效主治、性味归经等方面进行综述。椒目作为药材名始载于《本草经集注》,后世也多以“椒目”作为正名;椒目为芸香科植物花椒或青椒的种子,秋季8~10月成熟时采摘,炮制方法有净制、炒制和盐制;能利水消肿,治疗肾虚耳鸣,主治水腹胀满,无毒或小毒。本文对椒目追本溯源,考究药史,厘清椒目的中药基原性能,为椒目的临床正确使用及为国家制定该药材的中药质量标准提供科学依据。

关键词：椒目名称基原采收本草考证

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Advanced technology for functionalization of carbon nanotubes

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Progress in Natural Science:Materials International 2009年第7期19卷 801-810页

作者： lingjie meng, Chuanlong Fu, Qinghua Lu School of Chemistry and Chemical Technology, Shanghai Jiaotong University, Shanghai 200240, China School of Chemistry and Chemical Technology Shanghai Jiaotong University Shanghai 200240 China

Functionalization of carbon nanotubes (CNTs) has attracted considerable interest in the fields of physics, chemistry, material science and biology. The functionalized CNTs exhibit improved properties enabling facile fabrication of novel nanomaterials and *** of the functionalization approaches developed at present could be categorized into the covalent attachment of functional groups and the non-covalent adsorption of various functional molecules onto the surface of CNTs. This review highlights recent development and our work in functionalization of carbon nanotubes, leading to biocompatible CNTs, fluorescent CNTs and transition metal functionalized CNTs. These novel methods possess advantages such as simplified technical procedures and reduced cost of novel nanomaterials and nanodevices fabrication.

关键词： Carbon nanotubes (CNTs) Functionalization Bio-compatibility Fluorescence Transition metal

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