Scheme 1From: A highly sensitive fluorescent probe for ozone based on coumarin-benzothiazole derivativeSynthesis of BCT. a MeOH, HOAc, 0 °C, 5 h; b EtOH, NaOH, HCl , room temperature, 2 h; c 4-bromobut-1-ene, DMF, K2CO3, 70 °C, 24 hBack to article page