結晶化駆動溶液自己組み立て ブロックコポリマーで,光分解性結節が付いています
Yang Gao1, Huibin Qiu, Hang Zhou
1School of Chemistry, University of Bristol , Bristol BS8 1TS, United Kingdom.
Journal of the American Chemical Society
|February 6, 2015
まとめ
光に反応するブロックコポリマーは,円筒状のミセルに自己組み立てます. o-ニトロベンジルリンカーの光分裂により,ポリマーコロナが分離され,調節可能なミセル構造とナノチューブ形成が可能になります.
科学分野:
- ポリマー化学のポリマー化学について
- マテリアルサイエンス 材料科学
- ナノテクノロジー ナノテクノロジー
背景:
- ブロックコポリマーは,異なるセグメントを持つ多用途のマクロ分子です.
- ブロックコポリマーの自己組み立ては,オーダーされたナノ構造につながります.
- 光に反応する材料は,材料の特性に対するダイナミックな制御を提供します.
研究 の 目的:
- 制御された自己組み立てのための光反応性ブロックコポリマーを合成する.
- ブロックコポリマーにおける特定のリンク器の光分裂を調査する.
- 枝分かれしたミセルやナノチューブのような新しいナノ構造の形成を調査する.
主な方法:
- o-ニトロベンジル (ONB) 光分解性結合を持つポリ・フェロセニルジメチルシラン・ブロック・ポリ・ビニルピリジン (PFS-P2VP) ブロック共ポリマーの合成.
- 生体結晶化主導の自己組み立ては,選択的な溶媒で,円筒状のミセルを形成します.
- 紫外線照射を用いたONBリンクナーのフォトクリーバージング.
- 顕微鏡と分散技術を用いた自己組み立て構造の特徴化.
主要な成果:
- PFS-ONB-P2VPブロックコポリマーは,単分散型の円筒状ミセルを形成した.
- ONB リンク器のフォトクレーバージングにより,P2VP コロナが除去され,PFS シリンダが調節可能な残留コロナで生成されました.
- 部分的に冠を外した円筒にユニマーを加えた結果,枝分かれしたミセルが生まれた.
- 調節可能な長さのほぼ単分散のP2VPナノチューブが,コロナクロスリンクを通じて合成されました.
結論:
- 光に反応するブロックコポリマーは,制御された自己組み立てとナノ構造の製造のためのプラットフォームを提供します.
- Photocleavageは,ミセル構造を改変するための正確な方法を提供します.
- 開発された戦略は,枝分かれしたミセルやナノチューブのような複雑なナノ構造物の合成を可能にします.
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