関連する実験動画
Updated: Jul 13, 2026

09:39
Procedure for Fabricating Biofunctional Nanofibers
Published on: September 10, 2012
エレクトロアクティブな超分子自己組み立て繊維は,ドーピングされたテトラチアフルバレンベースのジェラターで構成されています
Tetsu Kitamura1, Suguru Nakaso, Norihiro Mizoshita
1Department of Chemistry and Biotechnology, School of Engineering, The University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113-8656, Japan.
Journal of the American Chemical Society
|October 20, 2005
まとめ
研究者らは,テトラチアフルバレン (TTF) の誘導体を用いて新しい電気活性超分子繊維を作成した. 液晶で自己組み立てたこれらの繊維は,ドーピング後に電気伝導性を示し,高度なアプリケーションのために並べることができます.
科学分野:
- 材料科学 材料科学とは
- 超分子化学 超分子化学
- オーガニック・エレクトロニクス
背景:
- テトラチアフルバレン (TTF) 誘導体は,その電気活性特性で知られている.
- L-イソレウシンのようなアミノ酸誘導体は,オルガンゲレーターとして作用し,自己組み立て構造を形成することができます.
- 液晶は,秩序ある自己組み立てのための媒体を提供します.
研究 の 目的:
- 新しい電気活性超分子繊維を合成し,特徴づけること.
- 液晶におけるTTF誘導体の自己組み立て行動を調査する.
- これらの新しい繊維の電気伝導性と電子特性を探求する.
主な方法:
- TTF-アミノ酸誘導体の自己組み立て液晶.
- 安定した繊維集積物の形成.
- ドーピング後の電気伝導度測定.
- 電子状態のスペクトル学的特徴付け.
- ポリイミド表面上のオリエンテッド液晶溶媒における繊維の整列.
主要な成果:
- セルフアセンブリを通じて,新しい電気活性超分子繊維を成功裏に形成しました.
- TTFベースのジェラターは,液晶の中で安定した繊維の塊を形成することを実証しました.
- 電気活性成分を含む水素結合1D集積物の最初の例を報告しました.
- ドーピングされた繊維の電気伝導性を測定した.
- 電子状態をスペクトロスコーピック法で特徴づけた.
- オリエンテッド・リキッド・クリスタル溶媒で,繊維の片方向の並び方を達成した.
結論:
- 新しい電動性超分子繊維は,TTF-アミノ酸誘導体の自己組み立てによって形成することができます.
- これらの繊維は,ドーピング時に測定可能な電気伝導性を示す.
- 片方向に並べられた繊維を形成する能力は,高度な機能的な材料の可能性を開きます.
関連する概念動画
Polymers
The word polymer is derived from the Greek words “poly” which means “many” and “mer” which means “parts”. Polymers are long chains of molecules composed of repeating units of smaller molecules, known as monomers. They either occur naturally, such as DNA and proteins, or can be constructed synthetically, like plastics. They have varied structural characteristics, such as linear chains, branched chains, or complex networks, that contribute to the properties that they exhibit. Additionally,...
Assembly of Cytoskeletal Filaments
Cytoskeletal filaments are polymeric forms of smaller protein subunits. However, individual cytoskeletal filaments may easily disassemble or associate with other similar filaments to form rigid structures. Microfilaments, made of actin monomers, rely on actin-binding proteins to form bundles and create networks of individual actin filaments. Microtubules rely on microtubule-associated proteins (MAPs) to form sturdy cylindrical structures. However, the proteins involved in forming complex...
Formation of Higher-order Actin Filaments
The polymerization of G-actin monomers into filamentous F-actin is a multi-step process. Once the F-actins are formed, they can bundle together in different arrangements to form higher-order networks and regulate cellular functions. Common examples include the formation of lamellipodia and filopodia at the cell's leading edge by actin reorganization in a migrating cell. The microvilli on the brush border epithelial cells are also formed through the F-actin network.
The high-order actin networks...
The high-order actin networks...
The Structure of Intermediate Filaments
The intermediate filaments are one of three widely studied cytoskeletal filaments. They are so named as their diameter (10 nm) is in between that of microfilaments (7 nm) and the microtubules (25 nm). These filaments are highly stable and can remain intact when exposed to high salt concentrations and detergents. These filaments are responsible for providing stability and mechanical support to the cells. They also help in cell adhesion and maintaining tissue integrity.
Intermediate filaments...
Intermediate filaments...
Formation of Intermediate Filaments
Intermediate filaments are cytoskeletal proteins with higher tensile strength and flexibility than microfilaments and microtubules. Unlike the other two cytoskeletal proteins, intermediate filament formation lacks the enzymatic activity to hydrolyze nucleotides like ATP and GTP to generate energy for polymerization. Therefore, the formation of intermediate filaments is multistep self-assembly. The involvement of any accessory proteins in intermediate filament formation has not yet been reported.
Fibrous Proteins
Fibrous proteins are either long and narrow proteins or assemble to form long and thin structures. They contain repetitive units and usually consist of either alpha helices or beta sheets and, in rare cases, a mix of both. The amino acids in the primary structure often consist of repeating amino acid sequences. The role of fibrous proteins is primarily structural. Many are located in the extracellular matrix and are present in connective tissues to impart strength and joint mobility. They are...

