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関連する概念動画

Liquid–Solid Solutions01:29

Liquid–Solid Solutions

122
The process of a solid dissolving in a liquid to form a solution is governed by the solubility limit, which is the maximum amount of the solid substance, or solute, that can be dissolved in a specific volume of the liquid or solvent. As the solute dissolves, it reaches a point where no more solute can be dissolved at a given temperature - this is known as the saturation point. However, if further solute is added and it manages to dissolve, the solution becomes supersaturated. Supersaturated...
122
Solid–Solid Solutions01:24

Solid–Solid Solutions

132
The temperature-composition phase diagram of two solids, A and B, which are immiscible in the solid phase but form miscible liquids, shows that when the temperature is low, these two exist as separate, pure solids (A and B). As the temperature increases, they transition into a single-phase liquid solution where A and B coexist. Moving from point a1 to a2 in the phase diagram, the composition changes such that solid B begins to separate from the solution, enriching the remaining liquid with A.
132
Recrystallization: Solid–Solution Equilibria01:10

Recrystallization: Solid–Solution Equilibria

4.1K
Recrystallization is a purification technique used to separate impurities from solid compounds. In this technique, no chemical reactions occur. Instead, it exploits physical properties only, specifically, the solubility differences between the desired compound and impurities, either at a single temperature or at different temperatures, and under other selected conditions. The solid-solution equilibrium (solubility equilibrium) of each component in the solution represents a binary phase...
4.1K
Solution Formation02:16

Solution Formation

29.7K
There is no one solvent that can dissolve every type of solute. Some substances that readily dissolve in a certain solvent might be insoluble in a different solvent. A simple way to predict which substances dissolve in which solvent is the phrase "like dissolves like". This means that polar substances, such as salt and sugar, dissolve in a polar substance like water. In contrast, non-polar substances are more soluble in non-polar solvents such as carbon tetrachloride.
This selective...
29.7K
Two Components: Liquid–Liquid Systems01:27

Two Components: Liquid–Liquid Systems

172
A pressure-composition phase diagram explicitly describes the behavior of an ideal solution of two volatile liquids under varying pressures and compositions. A pressure-composition diagram has two main curves. The bubble point curve represents the plot of pressure versus liquid mole fraction. It indicates the pressure at which the first bubble of vapor forms from the liquid phase as the system pressure decreases.The dew point curve is the pressure versus vapor mole fraction. It indicates the...
172
Molecular and Ionic Solids02:54

Molecular and Ionic Solids

16.4K
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...
16.4K

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関連する実験動画

Updated: Apr 30, 2026

Synthesis and Characterization of Supramolecular Colloids
09:26

Synthesis and Characterization of Supramolecular Colloids

Published on: April 22, 2016

9.5K

合成スーパーコンテナは,固体状態のゲスト・バインディング行動に対して,明確なソリューションを示しています.

Feng-Rong Dai1, Uma Sambasivam, Alex J Hammerstrom

  • 1Department of Chemistry, The University of South Dakota , Churchill-Haines Laboratories, Room 115, 414 East Clark Street, Vermillion, South Dakota 57069-2390, United States.

Journal of the American Chemical Society
|May 3, 2014
PubMed
まとめ
この要約は機械生成です。

新しい合成スーパーコンテナ (MOSC) は,その相と分子サイズに依存する多様なホスト-ゲスト結合行動を示します. 溶液結合は類似しているが,固体相互作用は異なっており,より大きなMOSCは,多孔性の崩壊と選択的なガス吸収を示している.

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Heterogeneous Removal of Water-Soluble Ruthenium Olefin Metathesis Catalyst from Aqueous Media Via Host-Guest Interaction
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Synthesis of Single-Crystalline Core-Shell Metal-Organic Frameworks
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Synthesis of Single-Crystalline Core-Shell Metal-Organic Frameworks

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Synthesis and Characterization of Supramolecular Colloids
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Heterogeneous Removal of Water-Soluble Ruthenium Olefin Metathesis Catalyst from Aqueous Media Via Host-Guest Interaction
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科学分野:

  • 超分子化学 超分子化学
  • マテリアルサイエンス 材料科学
  • ナノテクノロジー ナノテクノロジー

背景:

  • メタル・オーガニック・スーパーコンテナ (MOSC) は,調節可能なホスト・ゲスト特性を有する新材料です.
  • 異なるインターフェイスでの動作を理解することは,アプリケーションにとって非常に重要です.

研究 の 目的:

  • 新型II型MOSCの相依存の宿主-ゲスト結合を調査する.
  • 構造的多様性を溶液および接点における結合行動と相関させる.

主な方法:

  • カリキサレン前駆体によって異なるMOSCの合成と特徴付け.
  • ホスト・ゲスト結合試験は,同質な溶液 (クロロフォーム) で実施した.
  • 固体-液体 (水質) と固体-ガス界面での吸着実験.
  • ガス吸附分析 (N2,O2) をして,孔隙性を探知する.

主要な成果:

  • MOSCは異なる結晶包装 (fcc vs. bcc) を表していますが,溶液結合の親和性は似ています.
  • 固体-液体,固体-ガス界面において,ゲスト吸収の有意な差異が観察されました.
  • 溶媒の排出時に毛細さの崩壊が認められ,MOSCの分子サイズと相関していました.
  • MOSC-II-tPen-Niでは,部分的な構造崩壊による選択的なO2/N2吸収が観察されました.

結論:

  • MOSCの相および分子サイズは,宿主-ゲスト結合および吸収特性を決定的に影響する.
  • 毛細さの崩壊は,固体MOSCのガス吸収に影響を与える重要な要因です.
  • MOSCの構造を調整すると,選択的なガス分離能力につながる可能性があります.