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コア・結晶型円筒状ミセルの形状を制御する経路としての競争力のある自己組み立て運動
Jiangping Xu1, Hang Zhou1, Qing Yu1
1Department of Chemistry, University of Toronto , 80 St. George Street, Toronto, Ontario M5S 1H6, Canada.
Journal of the American Chemical Society
|February 6, 2018
まとめ
ブロックコポリマー (BCP) の結晶化運動を制御することで,自己組み立てミセル形態の正確な操作が可能になります. この研究は,新しいハイブリッド材料を可能にするために,競争力のある成長率が不均一または分離されたブロックコミセルを形成するかどうかを決定する方法を明らかにしています.
科学分野:
- ポリマー化学
- 超分子化学
- 材料科学
背景:
- 選択溶媒におけるブロックコポリマー (BCP) の核化された自己組成は,均一で棒状のミセルを形成する.
- ポリフェロセニルジメチルシラン (PFS) を含むBCPの結晶化誘導による自己組み立ては,連続的なブロックコミセル形成で知られている.
- 異なるBCP (生体共ポリメリゼーション) の同時添加と,共通の種子におけるそれらの競争的動態は,あまり理解されていない.
研究 の 目的:
- 線形PFSを含むBCPペアの競争的な種子の成長運動を体系的に調査する.
- コミセルの形状を制御する 動作を操作する
- これらの自己組み立て構造から階層的およびハイブリッド材料の形成を調査する.
主な方法:
- 線形PFSを含むBCPのペアを用いた競争的な種子の成長運動学的研究.
- 個々のBCPユニマー成長率が共同組み立て行動とコロナ形態学にどのように影響するか分析.
- コロナブロックの長さやチャージ導入などの成長率の格差に影響を与える要因の調査.
主要な成果:
- 個々のBCPユニマー種子の成長運動は,コアセンブリ行動とコロナ形態を決定する上で優勢である.
- 類似の表軸成長率は,微相分離の冠鎖を持つ不均一なコミセルにつながります.
- 不同な成長率は,大規模なコロナブロックの分離を促進し,ブロックコミセルを形成します.
- 生きたコミセルターミニは,階層的な自己組み立てと単一の構成要素のブロックの形成を容易にする.
- パッチなコミセルには金やプラチナのナノ粒子が加えられ,有機と無機のハイブリッド材料が作られます.
結論:
- 共通の種子におけるBCPの競争力のある動態は,ブロックコミセル形態を制御するために操作することができます.
- この制御により,自己組み立ての階層構造と,機能的な有機-無機混合材料を触媒として作ることができます.
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