Structural variability, unusual thermochromic luminescence and nitrobenzene sensing properties of five Zn(ii) coordination polymers assembled from a terphenyl-hexacarboxylate ligandElectronic supplementary information (ESI) available: Detailed structural figures, the coordination modes of ligands, the metal clusters, PXRD patterns, TGA curves, IR spectra, scatterplot of luminescence intensity in response to temperature, PXRD patterns of 1-5 before and after heating at 330 K. Comparison of emissi
Reactions of the terphenyl-hexacarboxylate ligand [1,1′;4′,1′′]terphenyl-3,5,2′,5′,3′′,5′′-hexacarboxylic acid (H 6 L) with Zn(NO) 3 in the mixed solvents under low-temperature solvothermal conditions afforded five new coordination networks, namely, {[Me 2 NH 2 ] 2 [Zn 5 (L) 2 (H 2 O) 4 ]·16H 2 O} n...
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| Main Authors | , , , , , , , , |
|---|---|
| Format | Journal Article |
| Language | English |
| Published |
11.05.2015
|
| Online Access | Get full text |
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| Summary: | Reactions of the terphenyl-hexacarboxylate ligand [1,1′;4′,1′′]terphenyl-3,5,2′,5′,3′′,5′′-hexacarboxylic acid (H
6
L) with Zn(NO)
3
in the mixed solvents under low-temperature solvothermal conditions afforded five new coordination networks, namely, {[Me
2
NH
2
]
2
[Zn
5
(L)
2
(H
2
O)
4
]·16H
2
O}
n
(
1
), {[Me
2
NH
2
][Zn(H
3
L)(H
2
O)]·C
2
H
5
OH·5H
2
O}
n
(
2
), {[Me
2
NH
2
]
2
[Zn
2
(L)(H
2
O)
2
]·2DMF·2H
2
O}
n
(
3
), {[Zn
4
(L)(COO)
2
(DMF)
2
(H
2
O)
2
]·2C
2
H
5
OH·2DMF·2H
2
O}
n
(
4
), and {[Zn
4
(L)(DMF)
4
(C
2
H
5
OH)(H
2
O)](OH)
2
·DMF·2H
2
O}
n
(
5
) (DMF =
N
,
N
-dimethylformamide). Compounds
1
and
3-5
possess 3D frameworks, while compound
2
exhibits a 2D grid layer network. Photoluminescence properties of these five compounds have been investigated in solid state at room temperature and low temperature. These five compounds exhibit two kinds of emission modes at room temperature, and compounds
3-5
turn out to have interesting responses to temperature. The sensing properties of compound
1
also have been explored, which show high selectivity and sensitivity to trace amounts of nitrobenzene.
Five Zn(
ii
) coordination polymers synthesized through solvent-ratio-controlled method exhibit thermochromic luminescence and nitrobenzene sensing property. |
|---|---|
| Bibliography: | CCDC 1 Electronic supplementary information (ESI) available: Detailed structural figures, the coordination modes of ligands, the metal clusters, PXRD patterns, TGA curves, IR spectra, scatterplot of luminescence intensity in response to temperature, PXRD patterns of before and after suspending in benzene, crystal data and structure refinements, selected bond lengths and angles for compounds for compounds 10.1039/c5ce00420a 1-5 before and after heating at 330 K. Comparison of emission intensities of different solvents and emulsions, PXRD pattern of 1026109-1026113 respectively. For ESI and crystallographic data in CIF or other electronic format see DOI |
| ISSN: | 1466-8033 |
| DOI: | 10.1039/c5ce00420a |