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Updated: Sep 23, 2025

Fabrication of Gate-tunable Graphene Devices for Scanning Tunneling Microscopy Studies with Coulomb Impurities
Published on: July 24, 2015
Halogenation of graphene triggered by heteroatom doping
Samson O Olanrele1,2,3, Zan Lian1,2, Chaowei Si1,2
1Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences 72 Wenhua Road Shenyang 110016 China boli@imr.ac.cn.
Doping graphene with boron and nitrogen significantly enhances halogen interactions, enabling facile halogenation. This tuning of graphene properties opens new avenues for material science applications.
Area of Science:
- Materials Science
- Chemical Physics
- Surface Science
Background:
- Halogenation is crucial for tailoring graphene properties.
- Understanding halogen-graphene interactions is key for material design.
Purpose of the Study:
- To investigate the effects of boron and nitrogen doping on halogen interactions with graphene.
- To explore tunable interactions for facile graphene halogenation.
Main Methods:
- First-principles calculations were employed.
- The study focused on interactions between halogen diatomic molecules (Cl2, Br2, I2, F2) and doped graphene.
Main Results:
- Boron and nitrogen doping alter graphene's electronic structure, creating spin density and orbital polarization.
- Doping significantly increases binding energies for Cl2, Br2, and I2.
- Spontaneous dissociation of F2 was observed on doped graphene.
Conclusions:
- Boron and nitrogen doping offer effective control over halogen-graphene interactions.
- Doping presents a promising strategy for facile and tunable graphene halogenation.
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Electrophilic Addition to Alkynes: Halogenation
Halogenation is another class of electrophilic addition reactions where a halogen molecule gets added across a π bond. In alkynes, the presence of two π bonds allows for the addition of two equivalents of halogens (bromine or chlorine). The addition of the first halogen molecule forms a trans-dihaloalkene as the major product and the cis isomer as the minor product. Subsequent addition of the second equivalent yields the tetrahalide.

