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Updated: Aug 24, 2026

Microscopic Visualization of Porous Nanographenes Synthesized through a Combination of Solution and On-Surface Chemistry
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扫描道显微镜对石墨上的前性炭烯衍生物:链条长度对单层形态的影响

Yanhu Wei1, Kavita Kannappan, George W Flynn

  • 1Department of Chemistry, Brown University, Providence, Rhode Island 02912 USA.

Journal of the American Chemical Society
|April 22, 2004
PubMed
概括

在石墨上形成有序的单层. 侧链的长度决定了相邻的行是否采用相反或相同的异构面,从而创建奇拉域.

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Prochirality02:05

Prochirality

The concept of prochirality leads to the nomenclature of the individual faces of a molecule and plays a crucial role in the enantioselective reaction. It is a concept where two or more achiral molecules react to produce chiral products. A typical process is the reaction of an achiral ketone to generate a chiral alcohol. Here, the achiral reactant reacts with an achiral reducing agent, sodium borohydride, to generate an equimolar mixture of the chiral enantiomers of the product. For example, an...
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Chair Conformation of Cyclohexane

The chair conformation is the most stable form of cyclohexane due to the absence of angle and torsional strain. The absence of angle strain is a result of cyclohexane’s bond angle being very close to the ideal tetrahedral bond angle of 109.5° in its chair conformer. Similarly, the torsional strain is also absent owing to the perfectly staggered arrangement of bonds.
The hydrogen atoms linked to carbons are arranged in two different axial and equatorial orientations to achieve this staggered...