A highly selective wavelength-ratiometric and colorimetric probe for cysteine

Xiaodan Zeng, Xiaoling Zhang*, Baocun Zhu, Hongying Jia, Yamin Li

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

35 Citations (Scopus)

Abstract

Based on the nucleophilic aromatic substitution reaction mechanism, a new highly selective probe for cysteine (Cys), N-butyl-4-bromo-3-nitro-1,8- naphthalimide (1), was designed and synthesized. The probe displayed a remarkable (58 nm) red-shift in the absorption spectra and the color changes from colorless to yellow upon reaction with Cys. The probe could detect Cys quantitatively in the range of 0-0.9 mM by both normal and ratiometric absorption spectrometry methods. Moreover, 1 could also serve as a "naked-eye" probe for Cys with a minimum detectable concentration of approximately 50 μM.

Original languageEnglish
Pages (from-to)10-15
Number of pages6
JournalDyes and Pigments
Volume94
Issue number1
DOIs
Publication statusPublished - Jul 2012

Keywords

  • Colorimetric
  • Cysteine
  • Naphthalimide
  • Nucleophilic aromatic substitution
  • Probe
  • Ratiometric

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