Reversible, fluorescence-based optical sensor for hydrogen peroxide.
The preparation and characterisation are described of a robust, reversible, hydrogen peroxide optical sensor, based on the fluorescent quenching of the dye ion-pair [Ru(bpy)(3)(2+)(Ph(4)B(-))(2)], by O(2) produced by the catalytic breakdown of H(2)O(2), utilizing the inorganic catalyst RuO(2).xH(2)O. The main feature of this system is the one-pot formulation of a coating ink that, when dried, forms an active single-layer fluorescence-based H(2)O(2) sensor, demonstrably capable of detecting H(2)O(2) over the range of 0.01 to 1 M, with a relative standard deviation of ca. 4% and a calculated lower limit of detection of 0.1 mM. These sensors are sterilisable, using dry-heat, and stable when stored over 40 days, without exhibiting any loss in sensitivity or response characteristics.
Mills
Andrew
A
WestCHEM, Department of Pure & Applied Chemistry, University of Strathclyde, Thomas Graham Building, Glasgow, UK. a.mills@strath.ac.uk
Tommons
Cheryl
C
Bailey
Raymond T
RT
Tedford
M Catriona
MC
Crilly
Peter J
PJ
D006861:Hydrogen Peroxide / Q000032:analysis*; D006863:Hydrogen-Ion Concentration; D007202:Indicators and Reagents; D016877:Oxidants / Q000032:analysis*; D013050:Spectrometry, Fluorescence / Q000295:instrumentation / Q000379:methods
D007202:Indicators and Reagents; D016877:Oxidants; D006861:Hydrogen Peroxide