“…The specificity of α-Naph toward H 2 O 2 was evaluated. The probe was incubated with various reactive oxygen species (ROSs), reactive nitrogen species (RNSs), and reactive sulfur species (RSSs), including 1 O 2 , ONOO – , ClO – , NO, tert -butyl hydroperoxide (TBHP), • OH, O 2 •– , cysteine (Cys), glutathione (GSH), hydrogen sulfide (H 2 S), and homocysteine (Hcy), which may interfere in sulfonic ester- or boronate-based probes. − As can be seen, only H 2 O 2 induces a dramatic fluorescence enhancement, while other ROSs, RNSs, and RSSs trigger limited changes (Figure ). Additionally, other biologically relevant species, including cations (Na + , K + , Ca 2+ , Zn 2+ , Cu 2+ , Co 2+ , Mg 2+ , Fe 2+ , and Fe 3+ ) and anions (NO 3 – , NO 2 – , CH 3 COO – , S 2 O 3 2– , PO 4 3– , CO 3 2– , SO 3 2– , and SO 4 2– ), do not cause any changes of the fluorescence intensity (Figure S3, Supporting Information).…”