水中に分散し,反応し,炭化できる毛状の微孔ポリマーナノスフィア
Weicong Mai1, Bin Sun1, Luyi Chen1
1Materials Science Institute, Key Laboratory for Polymeric Composite and Functional Materials of Ministry of Education, School of Chemistry and Chemical Engineering, Sun Yat-sen University , Guangzhou 510275, P. R. China.
Journal of the American Chemical Society
|October 2, 2015
まとめ
研究者らは水に分散し,pHと温度に反応する 新しい毛深い微孔ポリマーナノスフェアを開発しました これらの多用途なナノ粒子は,高度な応用のために,明確に定義された微孔性炭素ナノスフェアに容易に炭素化できます.
科学分野:
- 材料科学
- ポリマー化学
- ナノテクノロジー
背景:
- 微孔性ポリマーは通常,水性であり,環境刺激に反応しない.
- マイクロポーラスのポリマーを炭化するための現在の方法は,しばしばナノモルフォロジーを損傷します.
- 微孔性ポリマーの多機能化は,材料科学における重要な課題です.
研究 の 目的:
- 多機能の微孔ポリマーナノスフェアを製造するための簡単で汎用的な方法を開発する.
- pHと温度に反応し 容易に炭化できる材料を作ります
- 反応しない微孔ポリマーの限界を克服する.
主な方法:
- ハイパークロスリンク化学と表面誘発原子移転ラジカルポリメリゼーション (SI-ATRP) の組み合わせを用いた毛深い微孔ポリマーナノスフィアの製造.
- SI-ATRPは 表面に様々な機能的なブロックを埋め込み 毛深い構造を作り出しました
- 生成されたナノスフィアの特性と反応性.
主要な成果:
- 水中に分散し,pH/温度に反応する微細な微細なポリマーナノスフィアを成功裏に合成した.
- 水溶液アドソーバートのナノスフィアの高い吸収能力が実証されています.
- ハイブリッドのコアシェル構造による炭素化により,これらのナノスフィアを明確に定義された微孔性炭素ナノスフィアに変換する能力を示した.
結論:
- 提案された戦略は,微孔性ポリマーを多機能化するための汎用的なアプローチを提供します.
- 開発された毛深いナノスフィアは,反応性や高い吸収能力を含む望ましい特性を示しています.
- この方法により,高度な微孔性炭素ナノ構造の作成が容易になり,様々な分野での応用が促進されます.
さらに関連する動画
関連する概念動画
03:22Colloids
17.2K
Children at play often make suspensions such as mixtures of mud and water, flour and water, or a suspension of solid pigments in water known as tempera paint. These suspensions are heterogeneous mixtures composed of relatively large particles that are visible to the naked eye or can be seen with a magnifying glass. They are cloudy, and the suspended particles settle out after mixing. On the other hand, a solution is a homogeneous mixture in which no settling occurs and in which the dissolved...
17.2K
01:09Colloidal precipitates
5.7K
The high insolubility of some precipitates can result in an unfavorable relative supersaturation. This can lead to colloidal particles with a large surface-to-mass ratio, where adsorption is promoted. For instance, in the precipitation of silver chloride, silver ions are adsorbed on the surface of the colloidal particles, forming a primary layer. This layer attracts ions of opposite charge (such as nitrate ions), forming a diffuse secondary layer of adsorbed ions. This electric double layer...
5.7K
01:06Coagulation
1.5K
Colloidal solids are solid particles suspended in solution. They are usually negatively charged, attracting a compact primary layer of positively charged ions, which attract more counterions to form an electrical double layer. Electrostatic repulsion between the charged double layers prevents the particles from colliding, stabilizing the colloids. These solids are often undesirable because they can contain toxins that are difficult to remove. Coagulation is a technique that helps aggregate and...
1.5K
01:29The Colloidal State
184
The formation of a colloidal system is exemplified by an aqueous solution containing Cl− ions is introduced to another containing Ag+ ions, resulting in the precipitation of solid AgCl as extremely tiny crystals. Instead of settling out as a filterable precipitate, these crystals remain suspended in the liquid, showcasing a colloidal system.A colloidal system involves colloidal particles within the approximate range of 1 to 1000 nm in at least one dimension, dispersed in a medium called...
184
01:30Micelles
364
Micelle formation is an intricate process that hinges on the properties of amphiphilic or amphipathic molecules and the conditions of the system in which they are found. Amphiphilic molecules, which have both hydrophilic (water-attracting) and hydrophobic (water-repelling) parts, play a critical role in this process.In aqueous environments, these molecules arrange themselves such that their hydrophilic heads are turned towards the water phase, while their hydrophobic tails are oriented away...
364
01:25Microbial Mats
67
Microbial communities forming biofilms and mats represent complex, spatially structured ecosystems where metabolic processes are stratified according to light, oxygen, and nutrient gradients. Biofilms are initial colonization stages, only a few millimeters thick, while mature microbial mats can reach centimeter-scale thickness and display intricate vertical organization. Their structural and functional heterogeneity allows microorganisms to occupy distinct ecological niches within a few...
67