1 Introduction
Studies have shown that SO2-induced HSA free radicals could cause tissue damage during allergic reactions, eosinophilic inflammation, and lung disease.1-6 An effective tool of simultaneous detection of HSA and SO2 is important for understanding the underlying mechanism of synergistic action between SO2 and HSA in disease. Recently Liang et al designed a fluorescent small molecule probe for simultaneous detection of HSA and SO2 via their distinct fluorescent signals.7 The design concept was as showed in Scheme 1.