Ammonium Ion Optical Sensor Formation and Characterization of a Self-Assembled Thiazole Containing Dibenzo-18-Crown-6 Monolayer toward Developing Ammonium Ion-Sensing Interface

摘要

This letter demonstrates a selective NH4~+ detection using a synthesized thiazole benzo crownether ethylamine-lipoic acid conjugate (1) monolayer.A self-assembled monolayer (SAM) of 1 was formed on Au surface and well characterized by atomic-force microscopy,Fourier transform infrared reflection absorption spectroscopy and cyclic voltammetry (CV).A good selectivity for NH4~+ sensing was observed in a range of 1.0 x 10~(-1) to 1.0x10~(-6) M by surface plasmon resonance.