スイッチ可能なフルカラー反射フォトニック円粒子
Qilin He1, Kang Hee Ku1, Harikrishnan Vijayamohanan1
1Department of Chemistry, Massachusetts Institute of Technology (MIT), Cambridge, Massachusetts 02139, United States.
Journal of the American Chemical Society
|May 28, 2020
まとめ
研究者は,デンドロニズドブラシブロックコポリマーを使用して,切り替え可能な光学円型ポリマー粒子を開発しました. これらの粒子は ダイナミックな色変化を示し 磁場で制御でき スマート素材の新たな可能性を提供します
科学分野:
- ポリマー科学
- 材料科学
- ナノテクノロジー
背景:
- 先進的な光学アプリケーションでは 調節可能な光子材料の開発が不可欠です
- ブロックコポリマーの自己組み立ては複雑なナノ構造への経路を提供します.
- 粒子の形状と光学特性を制御することは 課題です
研究 の 目的:
- 色を反射する光学円型ポリマー粒子を合成する.
- ダイナミックな色変化と磁場による制御を実現する.
- デンドロニズドブラシブロックコポリマー (den-BBCPs) の自己組み立て行動を調査する.
主な方法:
- 溶媒の蒸発によるデン-BBCPの自己組み立て
- 界面特性と粒子の形状を制御するために,デンドリット型単体表面活性物質を使用します.
- 分子重量を調整して 可視スペクトルの光色を制御する
- 磁性ナノ粒子で色付けを機能化しています
主要な成果:
- 球状のBBCP粒子は 線状の円形に変化した.
- 急速な自己組み立てにより,大きな領域 (153 nm ≤ D ≤ 298 nm) が得られました.
- 高度に秩序付けられたラメラ (>100層) は,円体内で光子多層を形成した.
- 色は分子量 (4771144 kDa) を変化させることで可視スペクトル全体で調節可能であった.
- 磁性ナノ粒子はリアルタイムで 切り替え可能な色付けを可能にしました
結論:
- ダイナミックな色で光学円形に自己組み立てられます
- 磁場によるアクティベーションは,オン/オフカラー制御を提供します.
- これらの粒子は 切り替え可能な新種の光子材料を表しています
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