| Abstract
| - A set of highly selective chemiluminescent probes hasbeen developed for the detection and quantitation ofsinglet oxygen (1O2), a reactive oxygen species that isknown to transform organic pollutants in the aquaticenvironment and elicits cytotoxic effects in biologicalsystems. In this study, a trap-and-trigger detection methodis employed, based on the reaction of 1O2 with a spiroadamantyl-substituted vinyl ether probe to form the corresponding thermally stable dioxetane, which undergoeschemiluminescent decomposition upon addition of achemical trigger. The detection method is highly selectivefor 1O2 relative to superoxide anion and hydrogen peroxide. The sensitivity of this method allows for the accuratemeasurement of environmentally relevant (picomolar)steady-state 1O2 concentrations in relatively short exposure times. The detection method was used to detect andquantify 1O2 production in the reaction of dibenzoylperoxide with superoxide anion.
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