Thermo-and solvatochromic coordination networks of 4-(4-pyridyl)benzoic acid.
Two novel metal-organic frameworks were synthetised solvothermally using the ditopic ligand: 4-(pyridin-4-yl)benzoic acid (44pba) (1) with either cobalt or nickel nitrate salts. Isostructural porous 3D-networks were obtained: [Co4(44pba)8]n. [(DMF)3•(EtOH)0.25•(H2O)4]n(2)and [Ni4(44pba)8]n.[(DMF)3....
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International Union of Crystallography
2016
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| Online Access: | http://hdl.handle.net/11408/849 |
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| author | Mehlana, Gift |
| author_facet | Mehlana, Gift |
| author_sort | Mehlana, Gift |
| collection | DSpace |
| description | Two novel metal-organic frameworks were synthetised solvothermally using the ditopic ligand:
4-(pyridin-4-yl)benzoic acid (44pba) (1) with either cobalt or nickel nitrate salts. Isostructural porous 3D-networks were obtained: [Co4(44pba)8]n. [(DMF)3•(EtOH)0.25•(H2O)4]n(2)and [Ni4(44pba)8]n.[(DMF)3.5•(EtOH)•(H2O)1.5]n(3). Their crystal structures were solved and their thermal behaviours studied. Both 2 and 3 displayed dramatic colour change when exposed to air and we owed that they readily absorb traces of water from the moist air. The reversibility of the water uptake and associated colour change were observed upon heating and fully characterised with hot stage microscopy (HSM- Figure 1), thermogravimetric analysis (TGA), Powder X-ray Diffraction (PXRD) and UV-Vis spectrometry. |
| format | Article |
| id | ir-11408-849 |
| institution | My University |
| language | English |
| publishDate | 2016 |
| publisher | International Union of Crystallography |
| record_format | dspace |
| spelling | ir-11408-8492022-06-27T13:49:06Z Thermo-and solvatochromic coordination networks of 4-(4-pyridyl)benzoic acid. Mehlana, Gift kinetics Porous network Sorption Two novel metal-organic frameworks were synthetised solvothermally using the ditopic ligand: 4-(pyridin-4-yl)benzoic acid (44pba) (1) with either cobalt or nickel nitrate salts. Isostructural porous 3D-networks were obtained: [Co4(44pba)8]n. [(DMF)3•(EtOH)0.25•(H2O)4]n(2)and [Ni4(44pba)8]n.[(DMF)3.5•(EtOH)•(H2O)1.5]n(3). Their crystal structures were solved and their thermal behaviours studied. Both 2 and 3 displayed dramatic colour change when exposed to air and we owed that they readily absorb traces of water from the moist air. The reversibility of the water uptake and associated colour change were observed upon heating and fully characterised with hot stage microscopy (HSM- Figure 1), thermogravimetric analysis (TGA), Powder X-ray Diffraction (PXRD) and UV-Vis spectrometry. 2016-04-12T13:43:46Z 2016-04-12T13:43:46Z 2012 Article 2053-2733 http://hdl.handle.net/11408/849 en Acta Crystallographica Section A;Vol. 68, No. 1 open International Union of Crystallography |
| spellingShingle | kinetics Porous network Sorption Mehlana, Gift Thermo-and solvatochromic coordination networks of 4-(4-pyridyl)benzoic acid. |
| title | Thermo-and solvatochromic coordination networks of 4-(4-pyridyl)benzoic acid. |
| title_full | Thermo-and solvatochromic coordination networks of 4-(4-pyridyl)benzoic acid. |
| title_fullStr | Thermo-and solvatochromic coordination networks of 4-(4-pyridyl)benzoic acid. |
| title_full_unstemmed | Thermo-and solvatochromic coordination networks of 4-(4-pyridyl)benzoic acid. |
| title_short | Thermo-and solvatochromic coordination networks of 4-(4-pyridyl)benzoic acid. |
| title_sort | thermo-and solvatochromic coordination networks of 4-(4-pyridyl)benzoic acid. |
| topic | kinetics Porous network Sorption |
| url | http://hdl.handle.net/11408/849 |
| work_keys_str_mv | AT mehlanagift thermoandsolvatochromiccoordinationnetworksof44pyridylbenzoicacid |