Stabilization of the Closed-Ring Isomer of Spiropyran by Amide Naphthotube in Water and Its Application in Naked-Eye Detection of Toxic Paraoxon

Chemphyschem. 2020 Oct 16;21(20):2249-2253. doi: 10.1002/cphc.202000703. Epub 2020 Sep 23.

Abstract

The thermodynamically unstable, colourless closed-ring isomer of spiropyran can be stabilized in water by the anti-configurational isomer of amide naphthotube. The influence of the binding on the thermodynamics and kinetics of spiropyran have been studied. The complex was further used to prepare a test paper that allows naked-eye detection of toxic paraoxon.

Keywords: molecular recognition; naphthotube; paraoxon; spiropyran.

Publication types

  • Research Support, Non-U.S. Gov't