Boosting Luminescence of Planar-Fluorophore-Tagged Metal-Organic Cages Via Weak Supramolecular Interactions

Chemistry : a European Journal
Dong LuoDan Li

Abstract

A variety of planar organic fluorophores (R=phenyl, naphthalenyl, pyrenyl) and luminescence promotors (X=Cl, Br, I) were equipped, respectively, on the alternatively arranged vertices of cubic ZnII -imidazolate cages through orthogonal subcomponent self-assembly. It was found that supramolecular interactions, especially weak C-H⋅⋅⋅X interactions, play a key role in activating an efficient radiative pathway, coupled with reduced nonradiative decay rate through metal coordination, therefore significantly boosting the emission quantum yields of the system. This finding provides a strategy that utilizes molecular geometry and supramolecular interactions to modulate the emission efficiency of luminescent cage-based materials.

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Citations

Apr 11, 2019·Chemical Communications : Chem Comm·Liang LiangDan Li
Mar 19, 2019·Chemical Science·Edmundo G PercásteguiJonathan R Nitschke
Nov 26, 2020·Advanced Materials·Hugh P RyanJonathan R Nitschke
Jan 12, 2022·Inorganic Chemistry·Shuai FangHao Li

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