A rhodamine-formaldehyde probe fluorescently discriminates H2S from biothiols†
Abstract
A new rhodamine-formaldehyde probe based on the fluorescence on–off strategy for hydrogen sulfide detection was developed. The probe shows a fast and highly selective response to hydrogen sulfide over other reactive thiol-containing species both in aqueous media and in the living cell system. Its potential utility for biological applications was confirmed by fluorescence imaging of H2S in live cells.