Linker Engineering toward Full-Color Emission of UiO-68 Type Metal-Organic Frameworks

Shenjie Wu, Daming Ren, Kang Zhou, Hai Lun Xia, Xiao Yuan Liu*, Xiaotai Wang, Jing Li*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

59 Citations (Scopus)

Abstract

Luminescent metal-organic frameworks (LMOFs) demonstrate strong potential for a broad range of applications due to their tunable compositions and structures. However, the methodical control of the LMOF emission properties remains a great challenge. Herein, we show that linker engineering is a powerful method for systematically tuning the emission behavior of UiO-68 type metal-organic frameworks (MOFs) to achieve full-color emission, using 2,1,3-benzothiadiazole and its derivative-based dicarboxylic acids as luminescent linkers. To address the fluorescence self-quenching issue caused by densely packed linkers in some of the resultant UiO-68 type MOF structures, we apply a mixed-linker strategy by introducing nonfluorescent linkers to diminish the self-quenching effect. Steady-state and time-resolved photoluminescence (PL) experiments reveal that aggregation-caused quenching can indeed be effectively reduced as a result of decreasing the concentration of emissive linkers, thereby leading to significantly enhanced quantum yield and increased lifetime.

Original languageEnglish
Pages (from-to)10547-10552
Number of pages6
JournalJournal of the American Chemical Society
Volume143
Issue number28
DOIs
Publication statusPublished - 21 Jul 2021
Externally publishedYes

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