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Updated: Jun 14, 2026

Microscopic Visualization of Porous Nanographenes Synthesized through a Combination of Solution and On-Surface Chemistry
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Microscopic Visualization of Porous Nanographenes Synthesized through a Combination of Solution and On-Surface Chemistry

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作为纳米孔质材料的分子轮子:通过高10和高18轮子探测高极化129Xe NMR光谱的不同气体扩散模式

Chi-Yuan Cheng1, Theocharis C Stamatatos, George Christou

  • 1Department of Chemistry, University of Florida, Gainesville, Florida 32606-7200, USA.

Journal of the American Chemical Society
|March 31, 2010
PubMed
概括

分子轮的晶体作为新的纳米多孔材料. 超极化-129 NMR光谱检测显示了这些新型纳米管系统中明显的扩散行为和强烈的气体壁相互作用.

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Although gaseous molecules travel at tremendous speeds (hundreds of meters per second), they collide with other gaseous molecules and travel in many different directions before reaching the desired target. At room temperature, a gaseous molecule will experience billions of collisions per second. The mean free path is the average distance a molecule travels between collisions. The mean free path increases with decreasing pressure; in general, the mean free path for a gaseous molecule will be...