Synthesis 2022; 54(10): 2511-2515
DOI: 10.1055/s-0040-1719889
paper

Synthesis of a Maleimide-Diaminoterephthalate Fluorescence Dye as a ‘Turn-On’ Probe for the Detection of Thiols

Nils Schröder
,
Jens Christoffers
We gratefully acknowledge the support by the Deutsche Forschungsgemeinschaft within the framework of the GRK 1885 ‘Molecular Basis of Sensory Biology’.


Abstract

A fluorescence ‘turn-on’ probe for the detection of thiols was prepared in three steps. A diaminoterephthalate chromophore (λabs = 472 nm) was equipped with a maleimide moiety as reactive group. Upon conjugate addition of the thiol, the fluorescence intensity is increased by a factor of about twenty (λem = 567 nm, quantum yield Φ = 1% → 14%). The probe is used to establish a quantitative assay for glutathione.

Supporting Information



Publication History

Received: 13 October 2021

Accepted after revision: 17 December 2021

Article published online:
09 February 2022

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