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Assembly of metal–organic frameworks based on 4-connected 3,3′,5,5′-azobenzenetetracarboxylic acid: structures, magnetic properties, and sensing of Fe 3+ ions
Three metal–organic frameworks, {[Co 2 (ao 0.34 btc)(DMF) 3 ]·3DMF} n ( 1 ), {(Me 2 NH 2 ) 2 [Mn 12 (OH) 4 (abtc) 6 (DMA) 6 (H 2 O) 6 ][Mn(H 2 O) 4 ]·36H 2 O} n ( 2 ), and {[Zn 3 (abtc) 1.5 (H 2 O) 2.5 (DMA) 0.5 ]·5DMA·2CH 3 OH} n ( 3 ), were successfully designed and synthesized by using H 4 abtc l...
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| Published in: | New journal of chemistry 2019-03, Vol.43 (10), p.4226-4234 |
|---|---|
| Main Authors: | , , , , |
| Format: | Article |
| Language: | English |
| Citations: | Items that this one cites Items that cite this one |
| Online Access: | Get full text |
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| Summary: | Three metal–organic frameworks, {[Co
2
(ao
0.34
btc)(DMF)
3
]·3DMF}
n
(
1
), {(Me
2
NH
2
)
2
[Mn
12
(OH)
4
(abtc)
6
(DMA)
6
(H
2
O)
6
][Mn(H
2
O)
4
]·36H
2
O}
n
(
2
), and {[Zn
3
(abtc)
1.5
(H
2
O)
2.5
(DMA)
0.5
]·5DMA·2CH
3
OH}
n
(
3
), were successfully designed and synthesized by using H
4
abtc ligand under solvothermal conditions (H
4
abtc = 3,3′,5,5′-azobenzenetetracarboxylic acid, DMF =
N
,
N
-dimethyformamide, and DMA =
N
,
N
-dimethylacetamide). In complex
1
, the ao
0.34
btc
4−
ligands connect [Co
2
(CO
2
)
4
] second building units (SBUs) to generate a three-dimensional (3D) crystal structure, showing the “
PtS
”-type topology. The [Mn
3
OH(CO
2
)
6
] SBUs connected by abtc
4−
produce the 3D “
soc
”-type cage in complex
2
. Complex
3
consists of two categories of [Zn
2
(CO
2
)
4
] SBUs, resulting in the “
NbO
”-type cage with the assistance of the abtc
4−
ligands. Magnetic measurements reveal that antiferromagnetic exchange interactions exist in complexes
1
and
2
. Besides, the luminescence investigations of complex
3
show its excellent sensing ability toward Fe
3+
ions by fluorescence quenching. |
|---|---|
| ISSN: | 1144-0546 1369-9261 |
| DOI: | 10.1039/C8NJ05139A |