Back to Search
Start Over
Two-way vapochromism of a luminescent platinum(ii) complex with phosphonic-acid-functionalized bipyridine ligand.
- Source :
-
Dalton transactions (Cambridge, England : 2003) [Dalton Trans] 2018 Jan 30; Vol. 47 (5), pp. 1548-1556. - Publication Year :
- 2018
-
Abstract
- A luminescent Pt(ii) complex [Pt(CN) <subscript>2</subscript> (H <subscript>4</subscript> dpbpy)] (1P; H <subscript>4</subscript> 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·5H2O phases clearly reveal the activation of intermolecular PtPt interactions through the adsorption of water vapour. Emission spectroscopy reveals that the penta-hydrated 1P·5H2O 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 °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 PtPt interactions, is formed by drying at 100 °C whereas the monohydrate 1P·H2O phase, with effective PtPt interactions, is formed by drying under vacuum.
Details
- Language :
- English
- ISSN :
- 1477-9234
- Volume :
- 47
- Issue :
- 5
- Database :
- MEDLINE
- Journal :
- Dalton transactions (Cambridge, England : 2003)
- Publication Type :
- Academic Journal
- Accession number :
- 29322157
- Full Text :
- https://doi.org/10.1039/c7dt04324d