An AIE-active probe for selective fluorometric–colorimetric detection of HSO3− in aqueous solution and real samples

A bis-chalcone based colorimetric probe for the selective detection of bisulfite/sulfite anions: exploring surfactant promoted Michael addition of anions to α, β-unsaturated ketones

“…Therefore, calorimetric and fluorescent probes have been regarded as versatile tools for monitoring ions and biomolecules. 19–22…”

“…Therefore, calorimetric and uorescent probes have been regarded as versatile tools for monitoring ions and biomolecules. [19][20][21][22] Till now, several colorimetric and uorescent probes for the detection of the SO 2 derivatives (HSO 3 − /SO 3 2− ) have been designed and developed based on different sensing mechanisms such as the selective deprotection of levulinate group, [23][24][25] complexation with amines, 26,27 the selective reaction with aldehyde, 28,29 coordination to metal ions, 30 and Michael-type additions. 31,32 Among these different approaches 1,4-Michael addition of nucleophiles to a, b unsaturated systems that contain ester, ketone, nitrile, and nitro groups is one of the most versatile methods 33,34 for the development of chemosensors for the detection of SO 2 derivatives because this method allows the reaction to proceed under mild conditions.…”