コヴァレント有機フレームワークをコロイド光学結晶に組み込む
Javier Fonseca1,2, Lingxin Meng1,2, Pedro Moronta3
1Catalan Institute of Nanoscience and Nanotechnology (ICN2), CSIC, and Barcelona Institute of Science and Technology, Campus UAB, 08193 Bellaterra, Barcelona, Spain.
Journal of the American Chemical Society
|September 6, 2023
まとめ
研究者は,多孔性共性有機フレームワーク (COF) を使用して多孔性光子結晶を作成しました. COF粒子の大きさと吸収された種は結晶を調節する
科学分野:
- 材料科学
- ナノテクノロジー
- 化学について
背景:
- 光子結晶 (PhC) のような新しい材料の鍵となるものです
- 多孔質の材料は高度なアプリケーションに 調節可能な性質を備えています
研究 の 目的:
- 新しい多孔性PhCの構成要素として,多孔性共性有機フレームワーク (COF) を利用する.
- COFの粒子のサイズと孔の吸収によるPhCの特性を調査する.
主な方法:
- COFのコロイド粒子を用いた多孔性PhCの製造.
- 組み立てられた構造物の面中心立方体 (fcc) の配置の特徴.
- ブラッグ反射の調整は,COF粒子のサイズとアドソーバートの種を制御することによって行われます.
主要な成果:
- COF粒子からfcc配列で多孔性PhCを成功裏に製造した.
- COF粒子の大きさを変化させることで,ブラッグ反射の調節性を証明した.
- COFの毛穴に吸収された種はブラッグ反射を変化させることが示された.
結論:
- 毛細なCOFは,機能的なPhCを作るのに有効なコロイドの構成要素です.
- 開発された方法は,PhCの光学特性を正確に制御することができます.
- このアプローチは,カスタマイズされた機能を持つ高度なコロイド性PhCを開発するための道を開きます.
関連する概念動画
02:58Crystal Field Theory - Octahedral Complexes
26.7K
Crystal Field Theory
To explain the observed behavior of transition metal complexes (such as colors), a model involving electrostatic interactions between the electrons from the ligands and the electrons in the unhybridized d orbitals of the central metal atom has been developed. This electrostatic model is crystal field theory (CFT). It helps to understand, interpret, and predict the colors, magnetic behavior, and some structures of coordination compounds of transition metals.
CFT focuses on...
To explain the observed behavior of transition metal complexes (such as colors), a model involving electrostatic interactions between the electrons from the ligands and the electrons in the unhybridized d orbitals of the central metal atom has been developed. This electrostatic model is crystal field theory (CFT). It helps to understand, interpret, and predict the colors, magnetic behavior, and some structures of coordination compounds of transition metals.
CFT focuses on...
26.7K
02:46Crystal Field Theory - Tetrahedral and Square Planar Complexes
42.9K
Tetrahedral Complexes
Crystal field theory (CFT) is applicable to molecules in geometries other than octahedral. In octahedral complexes, the lobes of the dx2−y2 and dz2 orbitals point directly at the ligands. For tetrahedral complexes, the d orbitals remain in place, but with only four ligands located between the axes. None of the orbitals points directly at the tetrahedral ligands. However, the dx2−y2 and dz2 orbitals (along the Cartesian axes) overlap with the ligands less than the dxy,...
Crystal field theory (CFT) is applicable to molecules in geometries other than octahedral. In octahedral complexes, the lobes of the dx2−y2 and dz2 orbitals point directly at the ligands. For tetrahedral complexes, the d orbitals remain in place, but with only four ligands located between the axes. None of the orbitals points directly at the tetrahedral ligands. However, the dx2−y2 and dz2 orbitals (along the Cartesian axes) overlap with the ligands less than the dxy,...
42.9K
01:25Crystal Growth: Principles of Crystallization
2.1K
Crystallization is a phase transformation process in which crystals are precipitated from a supersaturated solution or formed from other sources. During crystallization, atoms or molecules arrange themselves into a well-defined, rigid crystal lattice to minimize energy.
Initiating crystallization involves manipulating the concentration of the solute and the temperature of the solution. Since crystal growth occurs when the ratio of concentration and solubility of the solute in the solvent...
Initiating crystallization involves manipulating the concentration of the solute and the temperature of the solution. Since crystal growth occurs when the ratio of concentration and solubility of the solute in the solvent...
2.1K
01:09Colloidal precipitates
616
The high insolubility of some precipitates can result in an unfavorable relative supersaturation. This can lead to colloidal particles with a large surface-to-mass ratio, where adsorption is promoted. For instance, in the precipitation of silver chloride, silver ions are adsorbed on the surface of the colloidal particles, forming a primary layer. This layer attracts ions of opposite charge (such as nitrate ions), forming a diffuse secondary layer of adsorbed ions. This electric double layer...
616