A merocyanine-based dual-mode optical probe for detection of hydrazine and its bioimaging application in vitro and vivo

Spectrochim Acta A Mol Biomol Spectrosc. 2020 Feb 5:226:117625. doi: 10.1016/j.saa.2019.117625. Epub 2019 Oct 7.

Abstract

In this paper, a Merocyanine-based turn-on probe (McyA) has been developed for colorimetric and fluorescent dual-mode detection of N2H4 via an intra-molecular charge transfer (ICT) mechanism. In the presence of N2H4, the probe shows an obvious chromogenic response and fluorescent enhancement. Based on this feature, the synthesized McyA can be applied to quantify N2H4 concentration from 0.12 to 5.0 μM and 0.5-10 μM with a detection limit of 0.042 μM (1.3 ppb, S/N = 3) and 0.140 μM (4.5 ppb, S/N = 3), respectively. Moreover, McyA has also be successfully employed for imaging analysis of N2H4 distribution in different organs from the N2H4 ingested mice model, revealing the potential application of McyA as a powerful fluorescent sensor for tracking detection and risk assessment of hydrazine in vivo.

Keywords: Bioimaging; Dual-mode detection; Fluorescence probe; Hydrazine; In vivo.

MeSH terms

  • Animals
  • Benzopyrans / chemistry*
  • Benzopyrans / pharmacology
  • Biosensing Techniques / methods*
  • Cell Survival / drug effects
  • Colorimetry / methods
  • Fluorescent Dyes / chemistry*
  • Fluorescent Dyes / pharmacology
  • Hep G2 Cells
  • Humans
  • Hydrazines / analysis*
  • Indoles / chemistry*
  • Indoles / pharmacology
  • Limit of Detection
  • Materials Testing
  • Mice
  • Molecular Imaging / methods*
  • Spectrometry, Fluorescence / methods

Substances

  • Benzopyrans
  • Fluorescent Dyes
  • Hydrazines
  • Indoles
  • merocyanine
  • hydrazine