イオンベースの材料は,π結合分子による正または負の電荷を持つ塩化物複合体から得られたものです

Bin Dong¹, Tsuneaki Sakurai, Yuya Bando

¹College of Pharmaceutical Sciences, Ritsumeikan University , Kusatsu 525-8577, Japan.

Journal of the American Chemical Society

|September 24, 2013

まとめ

研究者は,充電された複合体から指向塩を作り,上分子ゲルと柱状メソフェーズを形成した. これらの材料は,高度な電子アプリケーションに不可欠な一次元的電荷輸送特性を有しています.

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
オーガニック・エレクトロニクス

背景:

充電された種からオーダーされた材料を設計することは困難です.
アニオン認識は,複雑な超分子構造を構築するための鍵です.
π結合システムは,調節可能な電子特性を提供します.

研究の目的:

平面電荷を持つ種から指向塩を合成するために.
異なる状態におけるこれらの塩の自己組み立て行動を調査するために.
結果となる材料の電荷輸送特性を特徴付けるため.

主な方法:

ディカチオンおよび中性π結合受容体の合成.
陽性と負の電荷を持つ受容体-Cl-複合体の形成.
超分子ゲルと固体メソファースの特徴.
フラッシュ・フォトリシスの時間解像度マイクロ波伝導度測定.

主要な成果:

平面的な電荷を持つ受容体-アニオン複合体から,成功裏に指向塩を調製した.
固体イオンペアのゼロゲルと六角形の柱状メソフェーズにおける観察されたラメラー自己組織構造.
固体イオン対の0.05cm(2) V(-1) s(-1) の1次元の電荷载体移動性を決定しました.

結論:

充電された複合体とπ結合受容体の組み合わせにより,オーダーされた超分子構造が形成されます.
その結果生じる材料は,電子アプリケーションのための有望な電荷輸送特性を示しています.
この研究は,機能的な超分子材料の設計のための新しい経路を提供します.

さらに関連する動画

10:42

Combining Solid-state and Solution-based Techniques: Synthesis and Reactivity of Chalcogenidoplumbates(II or IV)

Published on: December 29, 2016

14:11

Synthesis of pH Dependent Pyrazole, Imidazole, and Isoindolone Dipyrrinone Fluorophores using a Claisen-Schmidt Condensation Approach

Published on: June 10, 2021

関連する概念動画

02:51

Metal-Ligand Bonds

The hemoglobin in the blood, the chlorophyll in green plants, vitamin B-12, and the catalyst used in the manufacture of polyethylene all contain coordination compounds. Ions of the metals, especially the transition metals, are likely to form complexes.
In these complexes, transition metals form coordinate covalent bonds, a kind of Lewis acid-base interaction in which both of the electrons in the bond are contributed by a donor (Lewis base) to an electron acceptor (Lewis acid). The Lewis acid in...

02:48

Ionic Bonding and Electron Transfer

Ions are atoms or molecules bearing an electrical charge. A cation (a positive ion) forms when a neutral atom loses one or more electrons from its valence shell, and an anion (a negative ion) forms when a neutral atom gains one or more electrons in its valence shell. Compounds composed of ions are called ionic compounds (or salts), and their constituent ions are held together by ionic bonds: electrostatic forces of attraction between oppositely charged cations and anions.

01:19

Complexation Equilibria: The Chelate Effect

In complexation reactions, metal atoms or cations interact with ligands to form donor-acceptor adducts called metal complexes. Ligands that bind through one donor site are monodentate, ligands with two donor sites are bidentate, and those with more than two donor sites are polydentate ligands. For example, ethylene diamine is a bidentate ligand that binds through two nitrogen donor atoms, forming a five-membered ring. EDTA is a polydentate ligand that binds through four oxygen and two nitrogen...

02:28

Electrophiles

This lesson explains the definition, classification, and characteristic features of an electrophile that are key features of nucleophilic substitution reactions. An analysis of their charge and orbital picture helps understand their reactivity for seeking electrons. Electrophiles can be classified into positive and neutral species. Other classes include free radicals and polar functional groups.
While a positive electrophile, like a proton, reacts due to its vacant, low-energy 1s orbital, the...

01:17

Ion Exchange

Ion exchange chromatography separates charged molecules from a solution by reversibly exchanging them with mobile, or 'active', ions associated with the oppositely charged stationary phase. This method can be used to separate ions, soften and deionize water, and purify solutions. The polymers comprising the ion-exchange column are high-molecular-weight and chemically stable polymers, crosslinked to be porous and essentially insoluble. They are also functionalized with either acidic or basic...

02:42

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...

関連する実験動画