功能納米組裝體中多面體低聚倍半硅氧烷的旋壓

作者：小柯機器人 發布時間：2021/2/5 13:55:41

山東大學邢鵬遙團隊提出在功能納米組裝體中多面體低聚倍半硅氧烷的旋壓策略。 相關研究成果發表在2021年2月02日出版的《德國應用化學》。

將具有原子精度的巨分子納米粒子引入手性納米組裝體中，有助于制備具有超分子手性的功能有序相，然而這仍然是一個主要的謎團。

該課題組研究人員報道了第一個多面體低聚倍半硅氧烷(POSS)衍生物自組裝成定義明確的手性納米組裝體的例子。POSS與N末端芳香族氨基酸共價綴合，氨基酸會自組裝成納米螺旋，通過溶劑極性調節并具有明確手性的扭曲。手性納米組裝體表現出活躍的手性光學響應，包括棉花效應和圓極化發光效應。

這種手性體系能夠通過電荷-轉移相互作用將客體分子包括在內，從而進一步調節自組裝結構、手性活性和發光顏色。獨特的共組裝系統應用于多個發光顯示器即時信息加密和存儲。

該研究工作為POSS分子自組裝功能手性材料的設計提供了新的思路。

附：英文原文

Title: Spinning Polyhedral Oligosilsesquioxanes in Functional Nanoassemblies

Author: Pengyao Xing, Shuguo An, Aiyou Hao

Issue&Volume: 02 February 2021

Abstract: Incorporation of giant molecular nanoparticles with atomic precision into chiral nanoassemblies facilitates the fabrication of functional ordered phases with supramolecular chirality, which however remains major mysterious. Here we report the first example of polyhedral oligosilsesquioxane (POSS) derivatives that self‐assembled into well‐defined chiral nanoassemblies. POSS was covalently conjugated to N‐terminal aromatic amino acids, which self‐assembled into nanohelices and twists with explicit handedness tuned by solvent polarity. Chiral nanoassemblies showed active chiroptical responses including Cotton effects and circularly polarized luminescence. Such chiral systems were capable of including guest molecules by charge‐transfer interaction, whereby self‐assembled structures, chiroptical activities and luminescent colors could be further modulated. The unique coassembly systems were applied for instant information encryption and storage with multiple luminescent displays. This work paves a new protocol to design functional chiral materials of POSS via molecular self‐assembly.

DOI: 10.1002/anie.202100044

期刊信息

總結

以上是生活随笔為你收集整理的鹿妮倍半机器人_功能纳米组装体中多面体低聚倍半硅氧烷的旋压的全部內容，希望文章能夠幫你解決所遇到的問題。

如果覺得生活随笔網站內容還不錯，歡迎將生活随笔推薦給好友。