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Two-way vapochromism of a luminescent platinum(II) complex with phosphonic-acidfunctionalized bipyridine ligand
- Source :
- Dalton transactions. 47(5):1548-1556
- Publication Year :
- 2018
- Publisher :
- Royal Society of Chemistry, 2018.
-
Abstract
- A luminescent Pt(II) complex [Pt(CN)(2)(H(4)dpbpy)] (1P; H(4)dpbpy = 2,2'-bipyridine-4,4'-diphosphonic acid) bearing a phosphonic-acid-functionalized bipyridine ligand was successfully synthesized and its unique two-way vapochromic behaviour investigated. X-ray structure analyses of both the anhydrous 1P and penta-hydrated 1P.5H(2)O phases clearly reveal the activation of intermolecular Pt. Pt interactions through the adsorption of water vapour. Emission spectroscopy reveals that the penta-hydrated 1P.5H(2)O complex exhibits an orange emission at 585 nm that shifts in two directions, to a blue-green emission at 469 nm by drying at 100 degrees C or to a red emission at 701 nm by drying under vacuum at room temperature. Thermogravimetric analyses and powder X-ray diffraction studies clearly reveal that anhydrous 1P, with negligible intermolecular Pt. Pt interactions, is formed by drying at 100 degrees C whereas the monohydrate 1P.H2O phase, with effective Pt. Pt interactions, is formed by drying under vacuum.
Details
- Language :
- English
- ISSN :
- 14779226
- Volume :
- 47
- Issue :
- 5
- Database :
- OpenAIRE
- Journal :
- Dalton transactions
- Accession number :
- edsair.jairo.........96b9e7bf9234704a80387b95684e473c