晶体框架材料中的邻近效应：MOF和COF中的堆叠诱导功能,Advanced Functional Materials

当前位置： X-MOL 学术 › Adv. Funct. Mater. › 论文详情

Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)

晶体框架材料中的邻近效应：MOF和COF中的堆叠诱导功能
Advanced Functional Materials ( IF 18.5 ) Pub Date : 2020-02-06 , DOI: 10.1002/adfm.201908004
Agnieszka Kuc ₁ , Maximilian A. Springer _{1,

2} , Kamal Batra ₂ , Rosalba Juarez‐Mosqueda ₃ , Christof Wöll ₄ , Thomas Heine _{1,

2}

Affiliation

金属有机框架（MOF）和共价有机框架（COF）由分子结构单元组成，这些结构单元通过牢固的键缝在一起。它们以其孔隙率，大表面积和相关特性而闻名。大多数MOF和COF的电子特性是其构成基础的电子特性的叠加。但是，如果是晶体，则可以观察到固态现象，例如电导率，电子带的充分分散，吸收带变宽，准分子态的形成，移动电荷载流子和间接带隙。这些效应通常是由堆积的芳族结构单元之间的范德华相互作用引起的邻近效应而出现的。在此显示了这种邻近效应是如何施加功能的，即通过堆叠芳族分子，使MOF和COF中出现非凡的特性。在讨论了石墨烯相关材料的邻近效应后，显示了其对分层COF和MOF的重要性。对于结构明确的MOF，可以通过改变MOF拓扑，晶格常数以及连接空间控制单元来控制芳族结构单元的堆栈。最后，在总结了用于有序表面安装MOF的逐层生长技术之前，对用于预测和分析这些影响的理论方法进行了概述。可以通过变化的MOF拓扑结构，晶格常数和附加空间控制单元来控制芳族结构单元的堆栈。最后，在总结了用于有序表面安装MOF的逐层生长技术之前，对用于预测和分析这些影响的理论方法进行了概述。可以通过变化的MOF拓扑结构，晶格常数和附加空间控制单元来控制芳族结构单元的堆栈。最后，在总结了用于有序表面安装MOF的逐层生长技术之前，对用于预测和分析这些影响的理论方法进行了概述。

"点击查看英文标题和摘要"

Proximity Effect in Crystalline Framework Materials: Stacking‐Induced Functionality in MOFs and COFs

Metal–organic frameworks (MOFs) and covalent organic frameworks (COFs) consist of molecular building blocks being stitched together by strong bonds. They are well known for their porosity, large surface area, and related properties. The electronic properties of most MOFs and COFs are the superposition of those of their constituting building blocks. If crystalline, however, solid‐state phenomena can be observed, such as electrical conductivity, substantial dispersion of electronic bands, broadened absorption bands, formation of excimer states, mobile charge carriers, and indirect band gaps. These effects emerge often by the proximity effect caused by van der Waals interactions between stacked aromatic building blocks. Herein, it is shown how functionality is imposed by this proximity effect, that is, by stacking aromatic molecules in such a way that extraordinary properties emerge in MOFs and COFs. After discussing the proximity effect in graphene‐related materials, its importance for layered COFs and MOFs is shown. For MOFs with well‐defined structure, the stacks of aromatic building blocks can be controlled via varying MOF topology, lattice constant, and by attaching steric control units. Finally, an overview of theoretical methods to predict and analyze these effects is given, before the layer‐by‐layer growth technique for well‐ordered surface‐mounted MOFs is summarized.

更新日期：2020-02-06

点击分享查看原文

点击收藏

公开下载

阅读更多本刊新发论文本刊介绍/投稿指南