関連する実験動画
Updated: Jun 17, 2026

10:03
The Preparation of Electrohydrodynamic Bridges from Polar Dielectric Liquids
Published on: September 30, 2014
二極分子がプロペラとして,電場刺激による放出を実現する
Yingchun Zhu1, Huijuan Liu, Fang Li
1Key Lab of Inorganic Coating Materials, Shanghai Institute of Ceramics, CASS, Shanghai 200050, China. yzhu@mail.sic.ac.cn
Journal of the American Chemical Society
|January 19, 2010
まとめ
研究者は,ナノインペラーとして二極分子を用いて,新しい電場制御解放システムを開発しました. このシステムは,腫瘍治療における潜在的な応用のための標的型,遠隔の薬物投与を可能にします.
科学分野:
- ナノテクノロジー ナノテクノロジー
- マテリアルサイエンス 材料科学
- バイオメディカルエンジニアリング
背景:
- コントロールされた放出システムは,標的の薬物投与に不可欠です.
- 既存の方法は,しばしば正確な外部制御がないか,侵入的になる可能性があります.
研究 の 目的:
- 新しい外部電場制御式放電システムの設計と実証.
- 機能的二極分子をナノインペラーとして利用し,精密な分子操作を行う.
主な方法:
- 強い二極 Moment を有する二極分子 4-(3-シアノフェニル) ブチレンを合成した.
- 分子をメソポラス材料の内面に埋め込みました.
- 分子の方向転換を誘導し,その後の放出を誘導するために,交替電場を適用した.
主要な成果:
- 二極二極分子は,外部電場への反応として,成功裏に方向転換した.
- 交互の電場が"ナノインペラー"を誘導し,ゲスト分子をメソポールから押し出す.
- 封装された物質の有効で,外部から制御された放出が実証されています.
結論:
- 開発されたシステムは,外部電場制御による放出のための新しいパラダイムを提供します.
- この技術は,リモートコントロールとローカルリリースの機能により,標的型腫瘍治療に期待されています.
- このプロセスの非電気化学的性質は,他の方法よりも利点をもたらします.
関連する概念動画
Induced Electric Dipoles
A permanent electric dipole orients itself along an external electric field. This rotation can be quantified by defining the potential energy because the external torque does work in rotating it. Then, the potential energy is minimum at the parallel configuration and maximum at the antiparallel configuration. While the former is a stable equilibrium, the latter is an unstable equilibrium.
Since the absolute value of potential energy holds no physical meaning, its zero value can be chosen as per...
Since the absolute value of potential energy holds no physical meaning, its zero value can be chosen as per...
Electric Dipoles and Dipole Moment
Consider two charges of equal magnitude but opposite signs. If they cannot be separated by an external electric field, the system is called a permanent dipole. For example, the water molecule is a dipole, making it a good solvent.
Theoretically, studying electric dipoles leads to understanding why the resultant electric forces around us are weak. Since electric forces are strong, remnant net charges are rare. Hence, the interaction between dipoles helps us understand electrical interactions in...
Theoretically, studying electric dipoles leads to understanding why the resultant electric forces around us are weak. Since electric forces are strong, remnant net charges are rare. Hence, the interaction between dipoles helps us understand electrical interactions in...
DC Battery
A conductor needs to be a component of a path that creates a closed loop or full circuit to have a continuous current flowing through it. A current starts to flow if an electric field is created inside an isolated conductor that is not part of a full circuit. The conductor quickly develops a net positive charge at one end and a net negative charge at the other. These charges generate an electric field opposite the direction of the applied electric field, which reduces the current. Eventually,...
Potential Due to a Polarized Object
A neutral atom consists of a positively charged nucleus surrounded by a negatively charged electron cloud. When placed in an external electric field, the external electric force pulls the electrons and nucleus apart, opposite to the intrinsic attraction between the nucleus and the electrons. The opposing forces balance each other with a slight shift between the center of masses of the nucleus and the electron cloud, resulting in a polarized atom. On the other hand, a few molecules, like water,...
Dielectric Polarization in a Capacitor
The presence of a dielectric medium in a capacitor not only changes the voltage and capacitance but also affects the electric field. In general, dielectrics can be of two types: polar and nonpolar. In a polar dielectric, the positive and negative charges in the molecules are separated by a distance and hence have a permanent dipole moment. In contrast, no such charge separation exists in a nonpolar dielectric, however the nonpolar molecules get polarized in the presence of an external electric...
Potential Due to a Magnetized Object
Magnetic dipoles in magnetic materials are aligned when placed under an external magnetic field. For paramagnets and ferromagnets, dipole alignment occurs in the direction of the magnetic field. However, the dipoles align opposite to the field in the case of diamagnets. This state of magnetic polarization due to the external field is called magnetization. Magnetization is defined as the dipole moment per unit volume. It plays a similar role to polarization in electrostatics.
The vector...
The vector...

