関連する実験動画
Updated: Jul 8, 2026

09:35
Subcutaneous Trigeminal Nerve Field Stimulation for Refractory Facial Pain
Published on: May 10, 2017
非ステロイド性顔面アンフィフィーラである
Fredric M Menger1, Jennifer L Sorrells
1Department of Chemistry, Emory University, Atlanta, Georgia 30322, USA. menger@emory.edu
Journal of the American Chemical Society
|April 13, 2006
まとめ
この研究は,ユニークな性質を持つ新しい顔のアンフィフィルを紹介しています. 従来の表面活性剤とは異なり,段階的な自己組み立てプロセスを経て安定したエムルションと粘性ネットワークを形成し,新しい表面活性剤の応用を示唆しています.
科学分野:
- マテリアルサイエンス 材料科学
- 超分子化学 超分子化学
- コロイド科学 コロイド科学
背景:
- 線形柔軟なチェーンを持つ従来のアンフィフィルは広く使用されていますが,制限があります.
- 新しいアンフィフィール構造を理解することは,高度な材料の開発に不可欠です.
- 顔面アンフィファイルは,伝統的な表面活性剤と比較してユニークな構造パラダイムを提供します.
研究 の 目的:
- 異常な非ステロイド性顔面アンフィフィルを合成し,特徴づけること.
- 水溶液中のこの新しい化合物の自己組み立て行動と性質を調査する.
- エムルションの安定化などの分野でその潜在的な応用を探求する.
主な方法:
- X線分析によるX線分析
- 光と冷凍電子顕微鏡 (冷凍-HRSEM)
- 表面張力測定 表面張力測定
- 導電性に関する研究.
- マイクロレオロジー マイクロレオロジー
- 核磁共振 (NMR) スペクトロスコーピーは,核磁共振 (NMR) スペクトロスコーピーを用います.
主要な成果:
- 顔のアンフィフィルは,従来の重要なミケルの濃度なしで,粘性のあるネットワークに自己組み立て,段階的な組み立てプロセスを示す.
- 安定したトロウレン・イン・ウォーターエムルションが形成され,数ヶ月間持続しました.
- NMRピークは,従来の表面活性剤とは異なり,水溶液で消去されました.
- X線と冷凍HRSEMのデータは,ラメラ形状を示した.
結論:
- 合成された顔のアンフィファイルは,従来の線形アンフィファイルと比較して,独特の自己組み立て行動と特性を表しています.
- 安定したエムルションと粘性ネットワークを形成する能力は,高度な配方と材料科学の潜在能力を示唆しています.
- 観察されたラメラー形態学とユニークな溶液の振る舞いは,その基本的な性質と応用に関するさらなる調査を正当化します.
関連する概念動画
Noncovalent Attractions in Biomolecules
Noncovalent attractions are associations within and between molecules that influence the shape and structural stability of complexes. These interactions differ from covalent bonding in that they do not involve sharing of electrons.
Four types of noncovalent interactions are hydrogen bonds, van der Waals forces, ionic bonds, and hydrophobic interactions.
Hydrogen bonding results from the electrostatic attraction of a hydrogen atom covalently bonded to a strong-electronegative atom like oxygen,...
Four types of noncovalent interactions are hydrogen bonds, van der Waals forces, ionic bonds, and hydrophobic interactions.
Hydrogen bonding results from the electrostatic attraction of a hydrogen atom covalently bonded to a strong-electronegative atom like oxygen,...
Drug-Receptor Bonds
Drug-receptor bonds are formed through various chemical forces when drugs interact with target cells. Covalent bonds, strong and irreversible, are exemplified by DNA-alkylating anticancer agents that inhibit cell division. However, such irreversible drug binding lacks selectivity and can modify the DNA of the surrounding healthy cells. Covalent binding often contributes to tissue toxicity, as seen with chloroform and paracetamol metabolites binding to the liver, causing hepatotoxicity.
In...
In...
Nondepolarizing (Competitive) Neuromuscular Blockers: Pharmacological Actions
Nondepolarizing neuromuscular blockers prevent the membrane depolarization of muscle cells and inhibit muscle contraction. These are usually administered with anesthetics to achieve complete muscle relaxation. Upon administration, these drugs first block the small, rapidly contracting muscles of the face and hands, followed by the larger muscles of the trunk and the intercostal muscles. The diaphragm is the last muscle to be affected.
Although all competitive neuromuscular blockers are designed...
Although all competitive neuromuscular blockers are designed...
Local Anesthetics: Chemistry and Structure-Activity Relationship
Local anesthetics (LAs) are drugs that induce a temporary loss of sensation in a limited body area, preventing pain. Cocaine was the first local anesthetic discovered in the late 19th century. Cocaine is a benzoic acid ester obtained from the leaves of coca shrubs and was often used for its psychotropic effects. Cocaine was first isolated in 1860 by Albert Niemann. Sigmund Freud studied the physiological actions of cocaine. Carl Koller later introduced it into clinical practice in 1884 as a...
Surface Active Agents
Surfactants, named for their behavior at interfaces, positively adsorb at the interfaces of two phases, reducing interfacial tension. Their versatility as emulsifiers, detergents, and foaming agents stems from this ability. Surfactants, often termed amphiphiles, share the property of amphipathy, with molecules having both hydrophilic and hydrophobic portions. The hydrophilic part is called the head, and the hydrophobic part, including an elongated alkyl substituent, forms the tail.Surfactants...
Antifungal Agents
Amphotericin B is a broad-spectrum antifungal agent that exploits structural differences between fungal and mammalian cell membranes. Its amphipathic structure—featuring a hydrophobic polyene-lactone ring and a hydrophilic region containing mycosamine and carboxylic acid groups—enables selective binding to ergosterol, a sterol predominantly found in fungal plasma membranes. This selective interaction underlies the drug’s antifungal activity, although weak binding to cholesterol contributes to...

