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Updated: Jul 5, 2026

Electrophoretic Crystallization of Ultrathin High-performance Metal-organic Framework Membranes
07:45

Electrophoretic Crystallization of Ultrathin High-performance Metal-organic Framework Membranes

Published on: August 16, 2018

カチオンの形状持続マクロサイクル:ナノサイズの超分子二重体の予期せぬ形成

Svetlana Klyatskaya1, Nico Dingenouts, Christine Rosenauer

  • 1Institute for Chemical Technology and Polymer Chemistry, Universität Karlsruhe, Engesserstr. 18, 76131 Karlsruhe, Germany.

Journal of the American Chemical Society
|March 9, 2006
PubMed
まとめ

アルキル化マクロサイクルは,非極性溶媒における管状積層の代わりに,予期せぬ形でダイマーを形成する. この研究は,超分子組立と自己組織化を解析しています.

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Molecular Shapes

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Ionic Bonding and Electron Transfer

Ions are atoms or molecules bearing an electrical charge. A cation (a positive ion) forms when a neutral atom loses one or more electrons from its valence shell, and an anion (a negative ion) forms when a neutral atom gains one or more electrons in its valence shell. Compounds composed of ions are called ionic compounds (or salts), and their constituent ions are held together by ionic bonds: electrostatic forces of attraction between oppositely charged cations and anions.
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Molecular Orbital Theory II

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Valence Bond Theory

Coordination compounds and complexes exhibit different colors, geometries, and magnetic behavior, depending on the metal atom/ion and ligands from which they are composed. In an attempt to explain the bonding and structure of coordination complexes, Linus Pauling proposed the valence bond theory, or VBT, using the concepts of hybridization and the overlapping of the atomic orbitals. According to VBT, the central metal atom or ion (Lewis acid) hybridizes to provide empty orbitals of suitable...
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Radical Formation: Abstraction

The electron of an atom can be abstracted from a compound by a relatively unstable radical to generate a new radical of relatively greater stability. For example, an initiator which forms radicals by homolysis can abstract a suitable species like a hydrogen atom or a halogen atom from a compound to generate a new radical. This ability of radicals to propagate by abstraction is a crucial feature of radical chain reactions.
Even though homolysis produces radicals, it is different from radical...