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Two-way vapochromism of a luminescent platinum(ii) complex with phosphonic-acid-functionalized bipyridine ligand.
- Source :
- Dalton Transactions: An International Journal of Inorganic Chemistry; 2/7/2018, Vol. 47 Issue 5, p1548-1556, 9p
- 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·5H<subscript>2</subscript>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<subscript>2</subscript>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 °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 °C whereas the monohydrate 1P·H<subscript>2</subscript>O phase, with effective Pt…Pt interactions, is formed by drying under vacuum. [ABSTRACT FROM AUTHOR]
- Subjects :
- PLATINUM
BIPYRIDINE
PHOSPHONIC acids
Subjects
Details
- Language :
- English
- ISSN :
- 14779226
- Volume :
- 47
- Issue :
- 5
- Database :
- Complementary Index
- Journal :
- Dalton Transactions: An International Journal of Inorganic Chemistry
- Publication Type :
- Academic Journal
- Accession number :
- 127669641
- Full Text :
- https://doi.org/10.1039/c7dt04324d