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相关概念视频

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In addition to the oxymercuration–demercuration method, which converts the alkenes to alcohols with Markovnikov orientation, a complementary hydroboration-oxidation method yields the anti-Markovnikov product. The hydroboration reaction, discovered in 1959 by H.C. Brown, involves the addition of a B–H bond of borane to an alkene giving an organoborane intermediate. The oxidation of this intermediate with basic hydrogen peroxide forms an alcohol.
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The mathematical expression known as the wave function, ψ, contains information about each orbital and the wavelike properties of electrons in an isolated atom. When atoms are bound together in a molecule, the wave functions combine to produce new mathematical descriptions that have different shapes. This process of combining the wave functions for atomic orbitals is called hybridization and is mathematically accomplished by the linear combination of atomic orbitals. The new orbitals that...
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相关实验视频

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Fabrication of Gate-tunable Graphene Devices for Scanning Tunneling Microscopy Studies with Coulomb Impurities
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六角性化脱皮和分散

Cecilia Martínez-Jiménez1, Alina Chow1, Ashleigh D Smith McWilliams1

  • 1Department of Chemistry, Rice University, Houston, TX, 77005, USA. amarti@rice.edu.

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分散二维六角化 (hBN) 纳米结构是释放其潜力的关键. 本综述涵盖了各种方法,包括溶剂和功能化,用于有效的hBN分散和材料制造.

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科学领域:

  • 材料科学 材料科学 材料科学
  • 纳米技术 纳米技术
  • 化学 化学 化学

背景情况:

  • 二维六角化 (hBN) 纳米结构具有独特的特性.
  • 从hBN制造宏观材料需要脱皮和分散.

研究的目的:

  • 提供关于hBN分散方法的全面审查.
  • 讨论脱皮的hBN板材及其分散的特性.

主要方法:

  • 对HBN的各种分散技术的审查.
  • 分析方法包括溶剂,共价功能化,酸/,表面活性剂,聚合物,生物分子,介质剂和热膨胀.

主要成果:

  • 详细讨论不同的hBN分散方法.
  • 评估脱皮的hBN板材和由此产生的分散物的性能.

结论:

  • 有效的分散对于利用hBN的特性至关重要.
  • 对于hBN分散,存在各种各样的方法,每个方法都有特定的优势.