ポリマー/シリカ複合体の多色メカノクロミズム

Takahiro Kosuge^1,2, Xiaolei Zhu³, Vivian M Lau^2,4

¹Department of Chemical Science and Engineering , Tokyo Institute of Technology , 2-12-1 Ookayama , Meguro-ku, Tokyo 152-8550 , Japan.

Journal of the American Chemical Society

|January 25, 2019

まとめ

この研究は,新しい多色メカノクロームポリマー/シリカ複合物を導入します. この材料は,2つの埋め込まれたメカノクロモフォールによる機械的ストレス,溶媒,および時間に対する反応として,明確な色変化 (青,緑,オレンジ) を表しています.

科学分野:

材料科学
ポリマー化学
ナノテクノロジー

背景:

メカノクロミックな材料は機械的なストレスで色が変わります
多色のメカノクロミックな材料を開発するのは難しいです
ポリマー/シリカ複合材料は,高度な材料設計のための多用途のプラットフォームを提供します.

研究の目的:

新しい多色メカノクロミックポリマー/シリカ複合物を開発する.
ディアリルビベンゾフランとナフトピランを含む複合物のメカノクロミックな性質を調査する.
物質構造,刺激,色反応の関係を理解する.

主な方法:

異なる領域を持つポリマー/シリカ複合物の製造.
2つの異なるメカノクロモフォール:ダイアリルビベンゾフランとナフトピランを組み込む.
固体紫外線吸収スペクトロスコーピーを用いた特徴付け,ab initio 誘導分子動態シミュレーション,およびエネルギー経路の計算分析.

主要な成果:

複合物は,青,緑,オレンジの色を表示する多彩なメカノクロミズムを示しました.
色の変化は,機械的刺激の強度,溶媒の加わり,時間によって変化する.
メカノクロモフォアの異なるドメインの位置 (シリカ濃度とポリマー濃度) は,それらの性質と活性化された色に影響を与えました.

結論:

新しい多色メカノクロミックポリマー/シリカ複合物が開発されました.
観察されたメカノクロミズムは,2つの異なるメカノクロモフォアとその局所環境の相互作用から生じる.
この複合材料は,視覚的ストレスや環境感知を必要とするアプリケーションの潜在性を示しています.

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