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有机铝杂环化合物作为金属杂环化合物中的重要一员,在有机合成中表现出一些独特的性质。有机铝杂环化合物主要包括铝杂环戊二烯、铝杂环戊烯,以及铝杂环戊烷。本文介绍近年来有机铝杂环化合物的合成方法学、反应化学及其在有机合成中的应用研究进展。 相似文献
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一种分析磷及其磷化物的新方法 总被引:2,自引:0,他引:2
测定固、液相样品中磷及其化合物的新方法是将待测样品中的磷及其化合物分解并被原子氢还原为PH3,再用气相色谱仪测定。该方法不需化学预处理,快速、灵敏、可靠,测定结果与分光光度法基本一致。 相似文献
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1教材分析上海科学技术出版社出版的高一化学新教材的第二章以“开发海水中的化学资源”为题,分“以食盐为原料的化工产品”、“海水中的氯”、“从海水中提取的重要元素”3节介绍卤素及其化合物的知识。本章知识安排强调化学与生活、化学与化工生产的联系。从学生身边的、熟悉 相似文献
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话说葡萄酒中的抗癌明星——白藜芦醇 总被引:1,自引:0,他引:1
白藜芦醇被喻为继紫杉醇之后的又一新的绿色抗癌药物,是备受关注的一种具有重要生理活性的天然物质。主要介绍了其结构、性质、存在、生理功能及生产方法等。 相似文献
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神经化学是一门新兴的交叉学科,这一学科将神经学与化学结合起来研究大脑的结构和功能,意识活动和机理等.大脑和神经中含有多种化学物质,这些物质影响着人的神经活动和情绪的变化以及健康.某些化学物质充当神经递质,它们是神经系统信息传递的介质. 相似文献
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Hanfeng Hou Ying Jin Huan Wei Wenliang Ji Yifei Xue Prof. Jingbo Hu Prof. Meining Zhang Prof. Ying Jiang Prof. Lanqun Mao 《Angewandte Chemie (Weinheim an der Bergstrasse, Germany)》2020,132(43):19158-19162
The selective sensing of neurochemicals is essential for understanding the chemical basis of brain function and pathology. Interfacing the excellent recognition features of aptamers with in vivo compatible carbon fiber microelectrode (CFE)-based electroanalytical systems offers a plausible means to achieve this end. However, this is challenging in terms of coupling chemistry, stability, and versatility. Here, we present a new interfacial functionalization strategy based on the assembly of aptamer cholesterol amphiphiles (aptCAs) on the alkyl chain-functionalized CFE. The noncovalent cholesterol-alkyl chain interactions effectively immobilize aptamers onto the CFE surface, allowing the generation of a highly selective system for probing neurochemical dynamics in living systems and opening up a vast array of new opportunities for designing in vivo sensors for exploring brain chemistry. 相似文献
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Organic chemistry is an important course for chemistry related disciplines but it is difficult to study. With the diverse reaction conditions and types, pithy formulas were suggested to help memorization. During the programming of the pithy formulas, the various meanings of Chinese characters and the association ability of human brain were fully considered, making the pithy formulas simple and easy to read. The scattered information was organized, making the abstract reactions readily remembered. The pithy formulas can not only get beginners familiar with organic chemistry, but also be useful for knowledge system constructing, helping knowledge comprehension and application lifelong. 相似文献
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Total ganglioside extracts prepared from brain tissue were concentrated either by dialysis against Carbowax or by employing Millipore filter cones. Thin-layer chromatography was then carried out using silica gel plates. After location of the various fractions quantitation was effected by direct densitometry. The methods that have been adopted are rapid and suitable for the study of brain gangliosides in post mortem and biopsy material in a clinical chemistry laboratory. 相似文献
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Hou Hanfeng Mao Junjie Han Yunhu Wu Fei Zhang Meining Wang Dingsheng Mao Lanqun Li Yadong 《中国科学:化学(英文版)》2019,62(12):1720-1724
Science China Chemistry - Modulation of interfacial electron transfer has been proven to pave a new approach to in vivo electrochemical monitoring of brain chemistry; however, designing and... 相似文献
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Donald J. Burton 《Journal of fluorine chemistry》1984,25(1):21-25
Although fluorine chemistry is rapidly approaching its 100th anniversary, organofluorine chemistry, as most of us know it, is only 40–50 years old. Interest and enthusiasm in this area of chemistry essentially traces its origins to the discovery and industrial applications of the Freons and polytetrafluoroethylene (Teflon). The unique properties of these materials attracted attention to this neglected area of organic chemistry—particularly industrially—and stimulated work on methods for the introduction of fluorine into organic molecules. 相似文献