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関連する概念動画

Molecular and Ionic Solids02:54

Molecular and Ionic Solids

20.2K
Crystalline solids are divided into four types: molecular, ionic, metallic, and covalent network based on the type of constituent units and their interparticle interactions.
Molecular Solids
Molecular crystalline solids, such as ice, sucrose (table sugar), and iodine, are solids that are composed of neutral molecules as their constituent units. These molecules are held together by weak intermolecular forces such as London dispersion forces, dipole-dipole interactions, or hydrogen bonds, which...
20.2K
Ionic Radii03:10

Ionic Radii

33.8K
Ionic radius is the measure used to describe the size of an ion. A cation always has fewer electrons and the same number of protons as the parent atom; it is smaller than the atom from which it is derived. For example, the covalent radius of an aluminum atom (1s22s22p63s23p1) is 118 pm, whereas the ionic radius of an Al3+ (1s22s22p6) is 68 pm. As electrons are removed from the outer valence shell, the remaining core electrons occupying smaller shells experience a greater effective nuclear...
33.8K
Ionic Bonds00:42

Ionic Bonds

131.7K
Overview
When atoms gain or lose electrons to achieve a more stable electron configuration they form ions. Ionic bonds are electrostatic attractions between ions with opposite charges. Ionic compounds are rigid and brittle when solid and may dissociate into their constituent ions in water. Covalent compounds, by contrast, remain intact unless a chemical reaction breaks them.
Opposing Charges Hold Ions Together in Ionic Compounds
Ionic bonds are reversible electrostatic interactions between ions...
131.7K
Solubility of Ionic Compounds02:55

Solubility of Ionic Compounds

68.3K
Solubility is the measure of the maximum amount of solute that can be dissolved in a given quantity of solvent at a given temperature and pressure. Solubility is usually measured in molarity (M) or moles per liter (mol/L). A compound is termed soluble if it dissolves in water.
68.3K
Ionic Crystal Structures02:42

Ionic Crystal Structures

17.7K
Ionic crystals consist of two or more different kinds of ions that usually have different sizes. The packing of these ions into a crystal structure is more complex than the packing of metal atoms that are the same size.
Most monatomic ions behave as charged spheres, and their attraction for ions of opposite charge is the same in every direction. Consequently, stable structures for ionic compounds result (1) when ions of one charge are surrounded by as many ions as possible of the opposite...
17.7K
Ionic Compounds: Formulas and Nomenclature03:34

Ionic Compounds: Formulas and Nomenclature

88.1K
An element composed of atoms that readily lose electrons (a metal) can react with an element composed of atoms that readily gain electrons (a nonmetal) to produce ions through complete electron transfer. The compound formed by this transfer is stabilized by the electrostatic attractions (ionic bonds) between the oppositely charged ions.
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Updated: Feb 12, 2026

Pretreatment of Lignocellulosic Biomass with Low-cost Ionic Liquids
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Pretreatment of Lignocellulosic Biomass with Low-cost Ionic Liquids

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PEDOT:PSS 導電性の強化のために設計されたイオン液体

Ambroise de Izarra1,2, Seongjin Park1, Jinhee Lee1

  • 1Department of Energy Science and Engineering , DGIST , Daegu 42988 , Korea.

Journal of the American Chemical Society
|April 11, 2018
PubMed
まとめ
この要約は機械生成です。

イオン液は,イオン交換とPEDOTドメインの増殖を促すことで,ポリ-3,4-エチレン二酸化シチオフェン:ポリステルエン硫酸 (PEDOT:PSS) の伝導性を高める. 最も効果的なイオン液体は,効率的なイオン交換を促進し,電荷を均一に保持し,導電性を改善します.

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Synthesis of Bimetallic Pt/Sn-based Nanoparticles in Ionic Liquids
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From Molecules to Materials: Engineering New Ionic Liquid Crystals Through Halogen Bonding
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From Molecules to Materials: Engineering New Ionic Liquid Crystals Through Halogen Bonding

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Synthesis of Bimetallic Pt/Sn-based Nanoparticles in Ionic Liquids
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From Molecules to Materials: Engineering New Ionic Liquid Crystals Through Halogen Bonding
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科学分野:

  • 材料科学
  • ポリマー化学
  • コンピュータ化学

背景:

  • ポリ-3,4-エチレン二酸化チオフェン:ポリステルエン硫酸塩 (PEDOT:PSS) は,柔軟な電子機器のための有望な導電ポリマーである.
  • その伝導性は,伝導性ポリ-3,4-エチレンダイオキシチオフェン (PEDOT) コアを囲むポリチレン硫酸塩 (PSS) 層によって制限されています.
  • イオン性液体 (IL) は,PEDOT:PSS伝導性を強化する可能性があるが,そのメカニズムは不明である.

研究 の 目的:

  • イオン性液体がPEDOT:PSS伝導性を高めるメカニズムを解明する.
  • PEDOT:PSSアプリケーションのための高性能イオン液体の設計原理を確立する.
  • 導電性を改善するための新しいイオン液体候補を特定する.

主な方法:

  • 最小のPEDOT:PSSモデルによる密度関数理論 (DFT) の自由エネルギー計算.
  • 溶液中のより大きなPEDOT:PSSモデルの分子動力学 (MD) シミュレーション
  • イオン交換効率,PEDOT形態,および電荷媒体の分布の分析.

主要な成果:

  • 最も効果的なILは,最も低い結合エネルギーを持つもので,効率的なイオン交換を容易にする.
  • イオン交換は,PEDOTとPSSの分離につながり,ILアニオンで装飾された大規模な導電性PEDOTドメインを形成します.
  • 最適なILアニオンは,PEDOTバックボーンに沿って均一な電荷キャリア分布を維持し,伝導性を高めます.

結論:

  • 高性能のILは,PEDOT形態の改善のための効率的なイオン交換と,強化された固有伝導性のための均一な高レベルのp-ドーピングを促進する必要があります.
  • これらの原理に基づいて,特定の電子引き出し,大容量,柔らかい,水性特性を有する新しいILペアが提案されています.