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Study on State of Terbium Ion in Liposome by One order Derivative Fluorescence Quenching Method

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Wuhan University Journal of Natural Sciences 1999年第4期4卷 469-472页

作者： mu xiao-jing Fang Guo-chun Yao Song-nian College of Chemistry and Environmental Science Wuhan University Wuhan China

The state of Tb3+ is investigated in liposome. When the concentration of PC is below CMC (critical micell concentration), most of Tb3+ is associated with PC, the binding constant is about 3.35×103 L/mol. When the concentration of PC is beyond CMC, most of Tb3+ is dimerized, the dimerization constant is about 3.92×104L/mol. In PC?CH?H2O system, the binding constant of Tb3+?CH complex 2.93×104L/mol is obtained.

关键词： one-order derivative fluorescence quenching method liposome PC-Tb binding constant

Highly conductive and stable iodine doped argyrodite electrolyte for all-solid-state lithium batteries

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Journal of Energy Chemistry 2025年第1期100卷 50-58页

作者： Gaozhan Liu jing Zhang jing Yang jinghui Chen Xingyue xiao Xiayin Yao Ningbo Institute of Materials Technology and Engineering Chinese Academy of Sciences Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of Sciences

Lithium argyrodites with high ionic conductivity and low cost are considered as one of the most prospective solid electrolytes for all-solid-state lithium ***,the poor chemical stability and compatibility with lithium metal limit their ***,Li5.4PS4.4Cl1.4I0.2solid electrolyte with high ionic conductivity of 11.49 m S cm-1and improved chemical stability is synthesized by iodine *** ultra-thin Li5.4PS4.4Cl1.4I0.2membrane with thickness of 10μm can be obtained by wet coating process,exhibiting a high ionic conductivity of 2.09 mS cm-1and low areal resistance of 1.17Ω***,iodine doping could in-situ form LiI at the lithium/electrolyte interface and improve the critical current density of Li5.4PS4.4Cl1.6from 0.8 to 1.35 mA *** resultant LiCoO2/Li5.4PS4.4Cl1.4I0.2/Li battery shows excellent cycling stability at 1 C,with a reversible specific capacity of 110.1 mA h g-1and a retention of 80.5% after 1000 *** addition,the assembled LiCoO2/Li5.4PS4.4Cl1.4I0.2membrane/Li pouch cell delivers an initial discharge capacity of 110.4 mA h g-1and 80.5% capacity retention after 100 cycles.

关键词： Solid-State Batteries

10-甲基吖啶苯酚酯衍生物的合成、表征及化学发光特性

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影像科学与光化学 2008年第4期26卷 257-264页

作者：穆小静刘敏严淑珊重庆大学化学化工学院重庆400030 华中科技大学同济医学院基础医学部湖北武汉430030

吖啶-9-羧酸苯酚酯是一类效率较高的化学发光试剂.其结构一般有两部分组成,吖啶环发光部分和9-羧酸苯酚酯离去基团.本文对离去基团进行修饰,分别在离去基团苯酚部分的2,5或2,6位引入取代基CF3、NO2、Br、CH3,合成了4个新吖啶酯衍生物,... 详细信息

吖啶-9-羧酸苯酚酯是一类效率较高的化学发光试剂.其结构一般有两部分组成,吖啶环发光部分和9-羧酸苯酚酯离去基团.本文对离去基团进行修饰,分别在离去基团苯酚部分的2,5或2,6位引入取代基CF3、NO2、Br、CH3,合成了4个新吖啶酯衍生物,并对它们的分子结构进行了表征.4个新化合物和模型化合物(无取代基)比较,均表现出较好的化学发光效率;发光动力学基本符合文献报道规律.而且化学发光法对其水解稳定性考察显示,取代基的电性和位阻是影响稳定性的两大因素.

关键词：吖啶酯化学发光离去基团发光动力学化学发光量子产率

原柱富集-高效液相色谱法测定水体中痕量邻苯二甲酸二甲酯

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分析化学 2009年第8期37卷 1193-1196页

作者：肖尚友王杰峰夏之宁穆小静重庆大学化学化工学院

将基于分离柱富集的高效液相色谱法应用于水样中低浓度邻苯二甲酸二甲酯的含量测定。此法的特点是萃取富集和分离分析过程在同一个C18柱上进行,低含量试样在线富集,富集倍数可达近千倍,直接检出限低。对于水样中的邻苯二甲酸二甲酯,在0.... 详细信息

将基于分离柱富集的高效液相色谱法应用于水样中低浓度邻苯二甲酸二甲酯的含量测定。此法的特点是萃取富集和分离分析过程在同一个C18柱上进行,低含量试样在线富集,富集倍数可达近千倍,直接检出限低。对于水样中的邻苯二甲酸二甲酯,在0.1～10μg/L浓度范围内线性关系良好;检出限为0.02μg/L;日内和日间检测的相对标准偏差均<3%;实际水样测定时回收率为104.3%～105.3%,能够满足轻微污染水样中邻苯二甲酸二甲酯的检测要求。

关键词：萃取富集高效液相色谱邻苯二甲酸二甲酯在柱

免疫荧光试剂9-(2′,6′-二溴苯氧羰基)-3-(2-(琥珀酰亚胺氧羰基)乙基)吖啶的合成

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化学试剂 2009年第8期31卷 577-580页

作者：穆小静刘敏盛静苑鹏重庆大学化学化工学院重庆400030 华中科技大学同济医学院基础医学院化学部湖北武汉430030

吖啶酯衍生物是量子产率较高的一类荧光及化学发光试剂。本文先后经5步反应合成了新的荧光免疫试剂即标题化合物,并用NMR、IR、MS和EA表征了产物及部分中间体的结构,并对合成过程中的位阻效应及区域选择性进行了讨论。

关键词：吖啶酯荧光免疫试剂位阻效应

Effects of the extrusion parameters on microstructure,texture and room temperature mechanical properties of extruded Mg-2.49Nd-1.82Gd-0.2Zn-0.2Zr alloy

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International Journal of Minerals,Metallurgy and Materials 2025年第1期32卷 136-146页

作者： Chenjin Zhang Guangyu Yang Lei xiao Zhiyong Kan jing Guo Qiang Li Wanqi Jie State Key Laboratory of Solidification Processing Northwestern Polytechnical UniversityXi’an 710072China College of Materials Science and Engineering Fuzhou UniversityFuzhou 350108China College of Chemistry and Environmental Science Qujing Normal UniversityQujing 655011China

Microstructure,texture,and mechanical properties of the extruded Mg-2.49Nd-1.82Gd-0.2Zn-0.2Zr alloy were investigated at different extrusion temperatures(260 and 320℃),extrusion ratios(10:1,15:1,and 30:1),and extrusion speeds(3 and 6 mm/s).The experimental results exhibited that the grain sizes after extrusion were much finer than that of the homogenized alloy,and the second phase showed streamline distribution along the extrusion direction(ED).With extrusion temperature increased from 260 to 320℃,the microstructure,texture,and mechanical properties of alloys changed *** dynamic recrystallization(DRX)degree and grain sizes enhanced as the extrusion ratio increased from 10:1 to 30:1,and the strength gradually decreased but elongation(EL)*** the extrusion speed increased from 3 to 6 mm/s,the grain sizes and DRX degree increased significantly,and the samples presented the typical-rare-earth(RE)*** alloy extruded at 260℃ with extrusion ratio of 10:1 and extrusion speed of 3 mm/s showed the tensile yield strength(TYS)of 213 MPa and EL of 30.6%.After quantitatively analyzing the contribution of strengthening mechanisms,it was found that the grain boundary strengthening and dislocation strengthening played major roles among strengthening *** results provide some guidelines for enlarging the industrial application of extruded Mg-RE alloy.

关键词： Mg-rare earth alloys extrusion temperature extrusion ratio extrusion speed strengthening mechanisms

新型吖啶-9-磺酰胺衍生物的合成及光谱学性质

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分析化学 2009年第7期37卷 970-974页

作者：穆小静肖尚友王建超吴彦蕾夏之宁重庆大学化学化工学院

在吖啶磺酰胺分子中引入杂环安替比林吸电性基团,合成了N-对甲基苯磺酰基-N-(4-安替比林)-10-甲基吖啶-9-磺酰胺三氟甲基磺酸鎓盐。最终产物与未甲基化的前体分别与模型化合物N-对甲基苯磺酰基-N-苯基-10-甲基吖啶-9-酰胺三氟甲基磺酸... 详细信息

在吖啶磺酰胺分子中引入杂环安替比林吸电性基团,合成了N-对甲基苯磺酰基-N-(4-安替比林)-10-甲基吖啶-9-磺酰胺三氟甲基磺酸鎓盐。最终产物与未甲基化的前体分别与模型化合物N-对甲基苯磺酰基-N-苯基-10-甲基吖啶-9-酰胺三氟甲基磺酸鎓盐及其前体的紫外-可见吸收光谱(UV)、荧光光谱(FL)进行比较。结果表明,引入杂环安替比林使吖啶磺酰胺的UV和FL谱发生了变化,尤其是FL谱的最大激发与发射峰的位置比相应的模型化合物大幅蓝移。最终产物及其前体的最大λex分别为268和274nm;λem分别为321和327nm。而模型化合物及前体最大λex分别为365和359nm;λem分别为504和440nm。H2O2引发的目标产物的化学发光(CL)在1.1s完成;化学发光量子产率与模型化合物相当,是Luminol的化学发光效率的5.6倍。

关键词：吖啶磺酰胺杂环取代紫外光谱荧光光谱化学发光

miRNA-21-5p is an important contributor to the promotion of injured peripheral nerve regeneration using hypoxia-pretreated bone marrow-derived neural crest cells

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Neural Regeneration Research 2025年第1期20卷 277-290页

作者： Meng Cong jing-jing Hu Yan Yu xiao-Li Li xiao-Ting Sun Li-Ting Wang Xia Wu Ling-Jie Zhu xiao-Jia Yang Qian-Ru He Fei Ding Hai-Yan Shi School of Medicine Nantong UniversityNantongJiangsu ProvinceChina Key Laboratory of Neuroregeneration of Jiangsu and Ministry of Education and Coinnovation Center of Neuroregeneration Nantong UniversityNantongJiangsu ProvinceChina Department of Physiology Jiangsu Health Vocational CollegeNanjingJiangsu ProvinceChina Department of Pathology Affiliated Hospital of Nantong UniversityNantongJiangsu ProvinceChina Jiangsu Clinical Medicine Center of Tissue Engineering and Nerve Injury Repair Affiliated Hospital of Nantong UniversityNantongJiangsu ProvinceChina

Our previous study found that rat bone marrow–derived neural crest cells(acting as Schwann cell progenitors)have the potential to promote long-distance nerve ***-based therapy can enhance peripheral nerve repair and regeneration through paracrine bioactive factors and intercellular ***,the complex contributions of various types of soluble cytokines and extracellular vesicle cargos to the secretome remain *** investigate the role of the secretome and extracellular vesicles in repairing damaged peripheral nerves,we collected conditioned culture medium from hypoxia-pretreated neural crest cells,and found that it significantly promoted the repair of sensory neurons damaged by oxygen-glucose *** mRNA expression of trophic factors was highly expressed in hypoxia-pretreated neural crest *** performed RNA sequencing and bioinformatics analysis and found that miR-21-5p was enriched in hypoxia-pretreated extracellular vesicles of neural crest ***,to further clarify the role of hypoxia-pretreated neural crest cell extracellular vesicles rich in miR-21-5p in axonal growth and regeneration of sensory neurons,we used a microfluidic axonal dissociation model of sensory neurons in vitro,and found that hypoxia-pretreated neural crest cell extracellular vesicles promoted axonal growth and regeneration of sensory neurons,which was greatly dependent on loaded ***,we constructed a miR-21-5p-loaded neural conduit to repair the sciatic nerve defect in rats and found that the motor and sensory functions of injured rat hind limb,as well as muscle tissue morphology of the hind limbs,were obviously *** findings suggest that hypoxia-pretreated neural crest extracellular vesicles are natural nanoparticles rich in ***-21-5p is one of the main contributors to promoting nerve regeneration by the neural crest cell *** helps to explain the mechanism of action of the secretome and e

关键词： axotomy cell-free therapy conditioned medium extracellular vesicles hypoxic preconditioning microRNA oxygen-glucose deprivation peripheral nerve injury Schwann cell precursors

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同步冷却技术在微波辅助有机合成中的应用

化学试剂 2010年第2期32卷 129-133页

作者：蔡高穆小静夏之宁重庆大学化学化工学院重庆400030

同步冷却技术作为微波化学领域的一项新技术,可以使某些有机反应速度加快,产率提高,选择性变好,因此同步冷却条件下的微波辅助有机合成成为研究的热点之一。从具有同步冷却的微波反应装置、同步冷却条件下微波辅助有机合成的反应特点、... 详细信息

同步冷却技术作为微波化学领域的一项新技术,可以使某些有机反应速度加快,产率提高,选择性变好,因此同步冷却条件下的微波辅助有机合成成为研究的热点之一。从具有同步冷却的微波反应装置、同步冷却条件下微波辅助有机合成的反应特点、同步冷却技术在低温微波化学中的应用和该技术在研究"微波的非热效应"中的应用4个方面进行综述,总结并展望了它在微波化学中的发展前景。

关键词：微波辐射同步冷却有机合成综述