半導体ナノファイバーの急速な準備のための生光誘導結晶化駆動セルフアセンブリ
Suyong Shin1, Florian Menk2, Youngjin Kim3
1Department of Chemistry , Seoul National University , Seoul , 08826 , Korea.
Journal of the American Chemical Society
|May 2, 2018
まとめ
研究者は光誘発セルフアセンブリを用いた 光結合ポリマーナノファイバーを開発した. この方法は,ナノ構造のサイズと均一性を正確に制御し,電子および光学的デバイスにおける新しいアプリケーションを可能にします.
科学分野:
- 材料科学
- ポリマー化学
- ナノテクノロジー
背景:
- 結合ポリマーナノ構造は 独特の電子と光学特性を有しています
- これらのナノ構造のサイズと均一性を正確に制御することは依然として大きな課題です.
- 既存の自己組み立て戦略は,狭い分散を達成する上で制限があります.
研究 の 目的:
- 光結合ブロックコポリマーの製造を実証する.
- 光誘発結晶による自己組み立てによるナノファイバーの迅速かつ制御された形成を達成する.
- 制御された次元を持つ様々なナノ構造を作り出すために 生命の自己組み立てを調査する
主な方法:
- 結合ブロックコポリマーの一次ポリメリゼーション
- 光誘発結晶化駆動の自己組立は,シスからトランスへの光異性化を使用する.
- ナノファイバー,コミセル,グラデントコミセルの制御された形成のための種子の成長.
主要な成果:
- 数分以内に 光結合ポリマーナノファイバーの急速な形成
- ナノファイバーで優れた長さ制御と狭いサイズ分布を達成しました.
- ABAトライブロックコミセルとグラデントコミセルを生産するための生きた自己組み立てが実証されました.
- 種子の成長に対する光誘発制御で,繰り返し活性化と無活性化が可能です.
結論:
- よく定義された結合ポリマーナノ構造を合成するための新しい方法を開発した.
- 光誘発結晶化駆動の自己組み立ては,ナノ構造の形状とサイズに正確な制御を提供します.
- 光制御可能な生体自己組み立ては ダイナミックで反応性のあるナノマテリアルの可能性を開きます
さらに関連する動画
関連する概念動画
Ionic Crystal Structures
17.5K
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...
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...
17.5K
Crystal Growth: Principles of Crystallization
5.1K
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...
5.1K
Crystal Field Theory - Octahedral Complexes
31.0K
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...
31.0K
Light Acquisition
9.6K
In order to produce glucose, plants need to capture sufficient light energy. Many modern plants have evolved leaves specialized for light acquisition. Leaves can be only millimeters in width or tens of meters wide, depending on the environment. Due to competition for sunlight, evolution has driven the evolution of increasingly larger leaves and taller plants, to avoid shading by their neighbors with contaminant elaboration of root architecture and mechanisms to transport water and nutrients.
9.6K
Protein Complex Assembly
16.8K
Proteins can form homomeric complexes with another unit of the same protein or heteromeric complexes with different types. Most protein complexes self-assemble spontaneously via ordered pathways, while some proteins need assembly factors that guide their proper assembly. Despite the crowded intracellular environment, proteins usually interact with their correct partners and form functional complexes.
Many viruses self-assemble into a fully functional unit using the infected host cell to...
Many viruses self-assemble into a fully functional unit using the infected host cell to...
16.8K
Crystal Field Theory - Tetrahedral and Square Planar Complexes
48.6K
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,...
48.6K


