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扫描电子显微镜

Scanning Electron Microscope

 
 
 
 
 

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扫描电镜观察分子容器  

2011-07-31 01:01:16|  分类: 默认分类 |  标签: |举报 |字号 订阅

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编辑:---驰奔
NYU Research Team Designs Molecular Flasks 纽约大学研究组设计的分子容器

New York University Researchers have created new materials with empty space on the inside; in effect they have developed molecular flasks, which could control unwanted and desired chemical reactions.
纽约大学研究人员开发出一种中空新材料,实际上他们发展了在不需要化学反应就能控制的分子容器,

NYU Research Team Designs Molecular Flasks - 驰奔 - --COXEM有限公司 中国代表处--
 
 
 
 
 
 
This is a scanning electron microscope image of a new material that self-assembles into a polyhedron using the attractive interactions associated with hydrogen bonds. The shapes then further organize into a crystal lattice that resembles a porous structure called zeolite, an absorbent material with many industrial uses. Credit - Michael D. Ward, New York University
 扫描电镜图像:一种使用和氢键相关的吸引作用自组装成为多面体的新材料。形状可进一步组织成为一种晶格,类似一种在很多工业中使用的被称作沸石的,用来吸收材料的的多孔结构。 

 

 

Chemical reactions happen everywhere in our daily life such as reactions that include rusting, burning or even the batteries that make use of chemical reaction for supplying electricity. Controlling these chemical reactions or even promoting the desirable and limiting the unwanted reactions is also very challenging for the researchers.
       化学反应发生在我们日常生活的每一个地方,这样的反应包括,生锈、燃烧、电池化学反应供电等。控制或者说进一步促进我们需要的,限制不需要的这些化学反应,对于研究人员来说还是具有挑战性。

According to Mike Ward, who is from the Department of Chemistry in the NYU, his team had created self-assembling cages, which could house other compounds inside them and ultimately facilitate the isolation of certain chemical reactions both inside and outside the cage. This research was reported in the Science Journal dated 22nd July. Ward further mentioned that they had created these cages for separating chemicals on the basis of size and even carrying out reactions within well defined cages for easier control over the reaction products and the chemical reactivity.

据纽约大学化学系的Mike Ward介绍,他的团队已经创建了自组装的笼子,在里面可以装载其他的物质,基本上使得笼子内外的化学反应隔离。这个研究在2011年7月22日得科学杂志上报道。Ward进一步提到,他们已经创造了这个笼子,用于在基本尺寸上的分隔,甚至实现在精确定义的笼子,轻松控制反应产物和化学反应。

These frameworks would also be perfect for housing a series of guest molecules, which would produce materials with new magnetic or optical properties. These molecular hotels take the shape of a truncated octahedron, which is one of the 13 Archimedean solids and future research projects would also try to develop other types of Archimedean solids and also utilize the truncated octahedron for housing a variety of functional molecules. Michael Scott, who is the Program Director at NSF’s Division of Materials Research, has stated that the Ward group had made use of some very simple chemical precursors and geometric design principles for the construction of reasonably sturdy materials, which include similar sized and shaped cavities. Chemists would get several opportunities for isolating unstable molecules, separating important chemical compounds and catalyzing unknown reactions.

Source: http://www.nsf.gov/

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