Tuning the fluorescence sensing for Fe 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 Fe 3+ ions. Three isostructural analogues of pillar-layered framewor...
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Published in: | New journal of chemistry 2023-12, Vol.48 (1), p.377-383 |
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Main Authors: | , , , , , , , |
Format: | Article |
Language: | English |
Online Access: | Get full text |
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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 Fe
3+
ions. Three isostructural analogues of pillar-layered frameworks were used as fluorescence sensors to quickly, sensitively, and selectively detect Fe
3+
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 (
K
sv(
PL-1
)
= 1.58 × 10
4
M
−1
) < (
K
sv(
PL-2
)
= 1.72 × 10
4
M
−1
) < (
K
sv(
PL-3
)
= 2.47 × 10
4
M
−1
), which may be related to different dipyridyl ligands acting as pillars.
This study reveals that different dipyridyl linkers influence the fluorescence sensing for Fe
3+
ions in pillar-layered MOFs. |
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ISSN: | 1144-0546 1369-9261 |
DOI: | 10.1039/d3nj03489e |