Refine
Year of publication
- 2014 (5) (remove)
Language
- English (5)
Is part of the Bibliography
- yes (5)
Keywords
- chromoionophore (2)
- green (2)
- indicators (2)
- ion optodes (2)
- ionophore (2)
- membrane (2)
- samples (2)
- sensors (2)
- switches (2)
- systems (2)
Institute
Formation of a Eu(III) borate solid species from a weak Eu(III) borate complex in aqueous solution
(2014)
In the presence of polyborates (detected by B-11-NMR) the formation of a weak Eu(III) borate complex (lg beta(11) similar to 2, estimated) was observed by time-resolved laser-induced fluorescence spectroscopy (TRLFS). This complex is a precursor for the formation of a solid Eu(III) borate species. The formation of this solid in solution was investigated by TRLFS as a function of the total boron concentration: the lower the total boron concentration, the slower is the solid formation. The solid Eu(III) borate was characterized by IR spectroscopy, powder XRD and solid-state TRLFS. The determination of the europium to boron ratio portends the existence of pentaborate units in the amorphous solid.