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Related Concept Videos

Aromatic Hydrocarbon Anions: Structural Overview01:18

Aromatic Hydrocarbon Anions: Structural Overview

Neutral hydrocarbons like cyclopentadiene with an odd number of carbon atoms and one intervening CH2 group in the ring are not aromatic. Cyclopentadiene with 4 π electrons does not satisfy the 4n + 2 π electron rule. Additionally, the intervening CH2 group is sp3 hybridized and lacks a vacant p orbital, thereby interrupting the overlap of p orbitals in a continuous manner and preventing the delocalization of π electrons throughout the ring.
Due to the absence of continuous overlap of p...
Aromatic Compounds: Overview01:25

Aromatic Compounds: Overview

In general, the term ‘aromatic’ indicates a pleasant smell or fragrance from fresh flowers, freshly prepared coffee, etc. In the early history of organic chemistry, many benzene derivatives were isolated from the pleasant odor oils of the plants. For example, vanillin was isolated from the oil of vanilla, methyl salicylate from the oil of wintergreen, and cinnamaldehyde from the oil of cinnamon. They all had a pleasant odor; hence the name aromatic was given.
In 1825, Faraday isolated benzene...

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Related Experiment Video

Updated: May 11, 2026

Preparation of Carbon Nanosheets at Room Temperature
10:44

Preparation of Carbon Nanosheets at Room Temperature

Published on: March 8, 2016

Functional single-layer graphene sheets from aromatic monolayers.

Dan G Matei1, Nils-Eike Weber, Simon Kurasch

  • 1Faculty of Physics, University of Bielefeld, Bielefeld, Germany.

Advanced Materials (Deerfield Beach, Fla.)
|May 30, 2013
PubMed
Summary
This summary is machine-generated.

High-quality single-layer graphene is produced from aromatic molecules on copper using electron irradiation and annealing. This method enables scalable graphene synthesis on various copper surfaces for electronic applications.

Keywords:
electrical transportelectron spectroscopy and microscopygraphene productionmolecular self-assemblystructural transformation

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Published on: September 23, 2018

Area of Science:

  • Materials Science
  • Surface Science
  • Nanotechnology

Background:

  • Self-assembled monolayers (SAMs) are crucial for surface functionalization.
  • Graphene synthesis is vital for advanced electronic and material applications.
  • Copper is a common substrate for graphene growth, but alternative methods are sought.

Purpose of the Study:

  • To develop a novel method for synthesizing high-quality single-layer graphene.
  • To investigate the atomic-scale transformation of aromatic molecules into graphene on copper.
  • To characterize the properties of graphene produced via this method.

Main Methods:

  • Formation of self-assembled monolayers of aromatic molecules on copper substrates.
  • Low-energy electron irradiation and subsequent annealing for transformation.
  • Atomic-scale characterization using microscopy and spectroscopy.
  • Electrical transport measurements to assess graphene quality.

Main Results:

  • Successful conversion of aromatic molecule SAMs into single-layer graphene on copper.
  • Demonstration of a two-dimensional solid-state transformation process.
  • Characterization of graphene properties using advanced techniques.
  • Validation of the method on both Cu(111) single crystals and polycrystalline copper foils.

Conclusions:

  • Low-energy electron irradiation and annealing provide a viable route to high-quality graphene.
  • This method offers a scalable approach for graphene synthesis on technologically relevant copper substrates.
  • The resulting graphene exhibits promising physical and chemical properties for various applications.