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相关概念视频

X-ray Diffraction of Biological Samples01:10

X-ray Diffraction of Biological Samples

3.8K
X-ray diffraction or XRD is an analytical tool that utilizes X-rays to study ordered structures such as crystalline organic and inorganic samples, polycrystalline materials, proteins, carbohydrates, and drugs.
According to Bragg's law, when X-rays strike the sample positioned on a stage, the rays are  scattered by the electron clouds around the sample atoms. The  X-ray diffraction or scattering is caused by constructive interference of the X-ray waves that reflect off the internal...
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X-ray Crystallography02:18

X-ray Crystallography

23.9K
The size of the unit cell and the arrangement of atoms in a crystal may be determined from measurements of the diffraction of X-rays by the crystal, termed X-ray crystallography.
Diffraction
Diffraction is the change in the direction of travel experienced by an electromagnetic wave when it encounters a physical barrier whose dimensions are comparable to those of the wavelength of the light. X-rays are electromagnetic radiation with wavelengths about as long as the distance between neighboring...
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相关实验视频

Updated: Jul 14, 2025

Microcrystallography of Protein Crystals and In Cellulo Diffraction
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Microcrystallography of Protein Crystals and In Cellulo Diffraction

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来自多晶样品的单晶质量数据:在禾中找到针头.

Joseph Charles Bear1, Nikitas Terzoudis1, Jeremy Karl Cockcroft2

  • 1School of Life Sciences, Pharmacy and Chemistry, Kingston University, Penrhyn Road, Kingston-upon-Thames, Surrey KT1 2EE, United Kingdom.

IUCrJ
|October 10, 2023
PubMed
概括

实验室多颗粒晶体学使用X射线衍射提供了快速的晶体结构解决方案. 这种技术可以快速分析共晶体,揭示它们精确的分子比例和结构.

科学领域:

  • 晶体学 晶体学是指结晶学.
  • 材料科学 材料科学 材料科学
  • 化学物理 化学物理

背景情况:

  • 传统上,多颗粒晶体学需要同步子源.
  • 实验室单晶X射线衍射 (XRD) 能够在现场进行快速的晶体生长和分析.
  • 进步允许在几分钟内分析和解决初步数据集.

研究的目的:

  • 为了证明实验室多粒度晶体学与实验室X射线衍射的适用性.
  • 为了展示在室温下对液体的快速联合晶体结构的确定.

主要方法:

  • 通过在X射线毛细血管中冷却液体混合物,使六二和二在现场快速的共同晶体生长.
  • 使用专用软件从微分光斑的部分部分识别单个单元细胞.
  • 收集一个小数据集,以大约1 Å的分辨率快速结晶结构溶液.

主要成果:

  • 成功确定了六黄和烯的共同晶体结构,揭示了 3:4 的结晶比率.
  • 通过解决六二和二的1:1共晶结构来证明该方法的通用性.
  • 该软件从只有10%的衍射点中识别出单元细胞.

结论:

关键词:
共同晶体的共同晶体是什么异质芳香的 异质芳香的在现场的衍射.多粒度晶体学多粒度晶体学

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  • 实验室多颗粒晶体学提供了一个快速有效的方法来确定晶体结构.
  • 这种技术对于研究室温液态样品特别有价值.
  • 该方法为某些晶体学研究提供了基于同步电子的方法的可行替代方案.