pH-Sensitive fluorescent sensor for Fe(III) and Cu(II) ions based on rhodamine B acylhydrazone: Sensing mechanism and bioimaging in living cells

Nikita Belko,Hanna Maltanava,Anatol Lugovski,Rute A.S. Ferreira,Sandra F.H. Correia,Polina Shabunya,Sviatlana Fatykhava, Anastasiya Tabolich,Tatsiana Kulahava,Anastasiya Bahdanava,Marli Ferreira,João Tedim,Sergey Poznyak,Michael Samtsov

Microchemical Journal（2023）

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摘要

•Interactions of rhodamine B acylhydrazone with Fe3+ and Cu2+ are studied.•Instability of the sensor is identified for the first time and ascribed to hydrolysis.•Fe3+ and Cu2+ catalyze the formation of rhodamine B and a phenanthrenone derivative.•The products fluoresce in the visible and NIR ranges.•The sensor is used for the first time to visualize lysosomes and detect Cu2+ in cells.

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关键词

Rhodamines fluorescent sensors bioimaging, Fe(III) ions Cu(II) ions

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