小柯机器人

Editing Light Emission with Stable Crystalline Covalent Organic Frameworks via Wall Surface Perturbation
2021-06-22 10:14

新加坡国立大学Donglin Jiang课题组取得一项新突破。他们报道了通过壁面微扰编辑稳定晶体共价有机框架的发光。2021年6月18日出版的《德国应用化学》发表了这项成果。

本文报道了在水、酸和碱中稳定的腙连接框架的合成,并证明了它们作为发光平台的实用性。多边形主链设计为发光且部分π共轭,孔壁与单个原子或单位对接,诱导共振、超共轭和互变异构效应。这些效应可以传输到主干,使框架能够发射三基色的光。

主干可以被多个表面位点扰动,使材料能够以可预先设计和数字化的方式编辑不同的发射颜色。

该系统显示了高活性,稳定性,可调性和灵敏度——是一套对发光和传感应用具有吸引力的特点。

研究人员表示,共价有机框架的有序π骨架使其成为可行的发光材料,但其有限的可调性阻碍了进一步的实现。

附:英文原文

Title: Editing Light Emission with Stable Crystalline Covalent Organic Frameworks via Wall Surface Perturbation

Author: Donglin Jiang, Zhongping Li, Keyu Geng, Ting He, Ke Tian Tan, Ning Huang, Qiuhong Jiang, Yuki Nagao

Issue&Volume: 2021-06-18

Abstract: The ordered π skeletons of covalent organic frameworks make them viable light-emitting materials but their limited tunability has precluded further implementation. Here we report the synthesis of hydrazone-linked frameworks which are stable in water, acid, and base, and demonstrate their utility as a platform for light emission. The polygonal backbone is designed to be luminescent and partially π conjugated while the pore wall is docked with single atom or unit to induce resonance, hyperconjugation, and tautomerization effects. These effects can be transmitted to the backbone, so that the framework is capable of emitting three primary colors of light. The backbone can be perturbated with multiple surface sites, rendering the material able to edit diverse emission colors in a predesignable and digital way. The systems show high activity, stability, tunability, and sensibility – a set of features attractive for light-emitting and sensing applications.

DOI: 10.1002/anie.202107179

Source: https://onlinelibrary.wiley.com/doi/10.1002/anie.202107179

分享到:

0