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Tuning the fluorescence sensing for Fe3+ ions by using different dipyridyl linkers in pillar-layered metal–organic frameworks

Isostructural, pillar-layered metal–organic frameworks (MOFs) will provide an ideal structural model for studying the influence of functional groups on fluorescence sensing. Here, we study dipyridyl linkers to tune the detection of Fe3+ ions. Three isostructural analogues of pillar-layered framework...

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Bibliographic Details
Published in:New journal of chemistry 2024-01, Vol.48 (1), p.377-383
Main Authors: Yan-E, Liu, Zhou, Ye, Xiao-Yu, Li, Yao, Jun, Qiu-Xia, Li, Quan-Qing, Xu, Rong-Rong Zhu, Ai-Xin, Zhu
Format: Article
Language:English
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Summary:Isostructural, pillar-layered metal–organic frameworks (MOFs) will provide an ideal structural model for studying the influence of functional groups on fluorescence sensing. Here, we study dipyridyl linkers to tune the detection of Fe3+ ions. Three isostructural analogues of pillar-layered frameworks were used as fluorescence sensors to quickly, sensitively, and selectively detect Fe3+ ions with good repeatability. Importantly, an increase in length of the pillars and accessible volumes may lead to an increase in the fluorescence quenching constants (Ksv(PL-1) = 1.58 × 104 M−1) < (Ksv(PL-2) = 1.72 × 104 M−1) < (Ksv(PL-3) = 2.47 × 104 M−1), which may be related to different dipyridyl ligands acting as pillars.
ISSN:1144-0546
1369-9261
DOI:10.1039/d3nj03489e