関連する実験動画
Updated: Jun 8, 2026

16:24
Controlling the Size, Shape and Stability of Supramolecular Polymers in Water
Published on: August 2, 2012
円形の鉄フルレン複合体の八極状の超分子集合体から3次元液晶格子状の液晶格子を形成する
Chang-Zhi Li1, Yutaka Matsuo, Eiichi Nakamura
1Nakamura Functional Carbon Cluster Project, ERATO, Japan Science and Technology Agency (JST), Hongo, Bunkyo-ku, Tokyo 113-0033, Japan.
Journal of the American Chemical Society
|October 20, 2010
まとめ
状の形状,極性複合体,アルキル鎖を持つ新しいフルレレン分子は,3Dの格子に自己組み立てます. これらの構造はテトラメリック八極球を形成し,極性をキャンセルし,ユニークな結晶と液晶相を可能にします.
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
- 有機化学 オーガニック・ケミストリー
背景:
- フラーレンの誘導体は,高度な材料特性のために探求されています.
- 分子自己組み立ての制御は,機能的な材料の設計の鍵です.
- 極性分子はしばしば複雑な相行動を示す.
研究 の 目的:
- 新しいフルレンベースの二極分子を設計・合成する.
- これらの分子の自己組み立て行動と相形成を調査する.
- オーダーされた3次元構造を作り出す可能性を探求する.
主な方法:
- 功能化されたフルレン分子 (1および2) の合成,円形,鉄-フェロゼン複合体,アルキル鎖を含む.
- クリスタログラフィーと熱分析により,相の振る舞いを研究する.
- レドックスと発光の性質を特徴付けるためのスペクトロスコピ的方法.
主要な成果:
- 分子1と2はマイクロフェーズ分離によって3次元格子に自己組み立てました.
- 重要な特徴は,分子極性を取り消して球体を形成する四重八柱状の集積物の形成です.
- 結晶と熱帯液体結晶相が観察されました.
- 分子はリドックス活性C ((60)) /フェロセンおよび発光性サイクロフェナセンの部分を示した.
結論:
- 構造的特徴の戦略的設置により,フルレンの誘導体の制御された超分子組立が可能になります.
- 非極性,球形の八極集積の形成は,格子形成の新たなメカニズムである.
- これらのフルレンベースの材料は,秩序ある構造と固有の特性により,高度な機能性材料での応用の可能性を示しています.
関連する概念動画
Metallic Solids
Metallic solids such as crystals of copper, aluminum, and iron are formed by metal atoms. The structure of metallic crystals is often described as a uniform distribution of atomic nuclei within a “sea” of delocalized electrons. The atoms within such a metallic solid are held together by a unique force known as metallic bonding that gives rise to many useful and varied bulk properties.
All metallic solids exhibit high thermal and electrical conductivity, metallic luster, and malleability. Many...
All metallic solids exhibit high thermal and electrical conductivity, metallic luster, and malleability. Many...
Ionic Crystal Structures
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...
Structures of Solids
Solids in which the atoms, ions, or molecules are arranged in a definite repeating pattern are known as crystalline solids. Metals and ionic compounds typically form ordered, crystalline solids. A crystalline solid has a precise melting temperature because each atom or molecule of the same type is held in place with the same forces or energy. Amorphous solids or non-crystalline solids (or, sometimes, glasses) which lack an ordered internal structure and are randomly arranged. Substances that...
Lattice Centering and Coordination Number
The structure of a crystalline solid, whether a metal or not, is best described by considering its simplest repeating unit, which is referred to as its unit cell. The unit cell consists of lattice points that represent the locations of atoms or ions. The entire structure then consists of this unit cell repeating in three dimensions. The three different types of unit cells present in the cubic lattice are illustrated in Figure 1.
Types of Unit Cells
Imagine taking a large number of identical...
Types of Unit Cells
Imagine taking a large number of identical...
Crystal Field Theory - Octahedral Complexes
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...
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...

