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Design and properties of multiple-emitter luminescent metal-organic frameworks.
Chemical Communications ( IF 4.3 ) Pub Date : 2020-09-03 , DOI: 10.1039/d0cc04733c
Shanghua Xing 1 , Christoph Janiak
Affiliation  

Multi-emitter luminescent metal–organic frameworks (LMOFs) possess multiple emission bands that can cover a wider spectral region, which is a prerequisite for white-light emitting and multi-dimensional ratiometric fluorescent sensing. By taking advantage of the structure features of MOFs (e.g. hybrid structure, porosity) and the various luminescence origins of LMOFs, different emission sources can be designed and combined with each other into a homogeneous solid-state LMOF phase with the desired emission properties. This feature article reviews the recent development of multi-emitter LMOFs, and focuses on the design strategies for creating multi-emitter LMOFs based on at least two emission centers. The design strategies are classified into and discussed along six categories: type I metal-linker emitters, Type II multi-metal emitters, Type III multi-linker emitters, Type IV chromophore@LMOF (chromophore incorporated into an already luminescent MOF), Type V chromophores@MOF (multi-chromophores embedded into a non-emissive MOF) and Type VI multi-heterostructure LMOF emitters. The new class of Type VI includes core–shell structured LMOF⊃LMOF and nanostructured LMOF/LMOF thin films on a substrate. The good spatial separation between the different emitters in their own but chemically linked LMOF phase can retain their emission properties with less interference with the other emitters.

中文翻译:

多发射体发光金属有机骨架的设计和性能。

多发射体发光金属有机框架(LMOF)具有多个发射带,可以覆盖更宽的光谱区域,这是白光发射和多维比例荧光传感的前提。通过利用MOF的结构特征(例如混合结构,孔隙率)和LMOF的各种发光起源,可以设计不同的发射源,并将它们彼此组合成具有所需发射特性的均匀固态LMOF相。这篇专题文章回顾了多发射器LMOF的最新发展,并重点介绍了基于至少两个发射中心创建多发射器LMOF的设计策略。设计策略分为以下六类进行讨论:I型金属连接体发射器,II型多金属发射体,III型多连接体发射体,IV型发色团@LMOF(已嵌入已经发光的MOF中的发色团),V型chromophores @ MOF(嵌入到非发光MOF中的多色团)和VI型多异质结构LMOF发射器。VI类的新类别包括在基底上的核壳结构LMOF⊃LMOF和纳米结构LMOF / LMOF薄膜。不同的发射器在它们自己但化学链接的LMOF相之间的良好空间间隔可以保留其发射特性,而对其他发射器的干扰较小。
更新日期:2020-10-15
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