Uranyl Ion Sensing by a Self-Assembled Calix[6]arene Monolayer

Abstract

A Self-assembled hydrophilic calix[6]arene monolayer was designed for uranyl ion detection. The uranyl ion recognition-function of the calix[6]arene monolayer was evaluated using surface plasmon resonance (SPR) at various concentrations of uranyl ions (1.0 × 10 −4 ∼ 1.0 × 10 −12 M) in 0.1 M Tris-HCl buffer solution (pH=7.0). Calix[6]arene monolayer showed good sensitivity and selectivity to detect very low concentrations of uranyl ions.