TY  - JOUR
A1  - Schott, Juliane
A1  - Kretzschmar, Jerome
A1  - Acker, Margret
A1  - Eidner, Sascha
A1  - Kumke, Michael Uwe
A1  - Drobot, Bjoern
A1  - Barkleit, Astrid
A1  - Taut, Steffen
A1  - Brendler, Vinzenz
A1  - Stumpf, Thorsten
T1  - Formation of a Eu(III) borate solid species from a weak Eu(III) borate complex in aqueous solution
JF  - Dalton transactions : a journal of inorganic chemistry, including bioinorganic, organometallic, and solid-state chemistry
N2  - 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.
Y1  - 2014
U6  - https://doi.org/10.1039/c4dt00843j
SN  - 1477-9226
SN  - 1477-9234
VL  - 43
IS  - 30
SP  - 11516
EP  - 11528
PB  - Royal Society of Chemistry
CY  - Cambridge
ER  - 
TY  - JOUR
A1  - Schwarze, Thomas
A1  - Mueller, Holger
A1  - Ast, Sandra
A1  - Steinbrück, Dorte
A1  - Eidner, Sascha
A1  - Geißler, Felix
A1  - Kumke, Michael Uwe
A1  - Holdt, Hans-Jürgen
T1  - Fluorescence lifetime-based sensing of sodium by an optode
JF  - Chemical communications
N2  - We report a 1,2,3-triazol fluoroionophore for detecting Na+ that shows in vitro enhancement in the Na+-induced fluorescence intensity and decay time. The Na+-selective molecule 1 was incorporated into a hydrogel as a part of a fiber optical sensor. This sensor allows the direct determination of Na+ in the range of 1-10 mM by measuring reversible fluorescence decay time changes.
Y1  - 2014
U6  - https://doi.org/10.1039/c4cc06112h
SN  - 1359-7345
SN  - 1364-548X
VL  - 50
IS  - 91
SP  - 14167
EP  - 14170
PB  - Royal Society of Chemistry
CY  - Cambridge
ER  - 
TY  - JOUR
A1  - Schwarze, Thomas
A1  - Müller, Holger
A1  - Ast, Sandra
A1  - Steinbrück, Dörte
A1  - Eidner, Sascha
A1  - Geißler, Felix
A1  - Kumke, Michael Uwe
A1  - Holdt, Hans-Jürgen
ED  - Kumke, Michael Uwe
T1  - Fluorescence lifetime-based sensing of sodium by an optode
JF  - Chemical Communications
N2  - We report a 1,2,3-triazol fluoroionophore for detecting Na+ that shows in vitro enhancement in the Na+-induced fluorescence intensity and decay time. The Na+-selective molecule 1 was incorporated into a hydrogel as a part of a fiber optical sensor. This sensor allows the direct determination of Na+ in the range of 1–10 mM by measuring reversible fluorescence decay time changes.
KW  - ion optodes
KW  - sensors
KW  - indicators
KW  - chromoionophore
KW  - ionophore
KW  - membrane
KW  - switches
KW  - systems
KW  - samples
KW  - green
Y1  - 2014
SN  - 0022-4936
SN  - 0009-241X
SP  - 14167
EP  - 14170
PB  - The Royal Society Chemistry
CY  - Cambridge
ER  -