A metal-responsive interdigitated bilayer for selective quantification of mercury( ii ) traces by surface plasmon resonance

Elizaveta Ermakova (1) , Oleg Raitman (1) , Alexander Shokurov (1) , Maria Kalinina (1) , Sofiya Selector (1) , Aslan Tsivadze (1) , Vladimir Arslanov (1) , Michel Meyer (2) , Alla Bessmertnykh-Lemeune (2) , Roger Guilard (2)

1 A.N. Frumkin Institute of Physical Chemistry and Electrochemistry
2 ICMUB - Institut de Chimie Moléculaire de l'Université de Bourgogne [Dijon]

Reusable surface plasmon resonance chips allowing the quantitative and selective detection of mercury(II) ions in water at the 0.01 nM level are reported. The surface-modified gold sensor consists of a rarefied self-assembled monolayer of octanethiol topped with a Langmuir–Blodgett monolayer of an amphiphilic and highly-specific chelator. The interdigitated architecture confers to the bilayer a high packing density, surface coverage, and binding-group accessibility.

Mots clés: aqueous-solution; gold; impedance spectroscopy; ions; optical-detection; self-assembled monolayers; sensor; spr; voltammetric determination; water

Domaines: Chimie

Elizaveta Ermakova, Oleg Raitman, Alexander Shokurov, Maria Kalinina, Sofiya Selector, et al.. A metal-responsive interdigitated bilayer for selective quantification of mercury( ii ) traces by surface plasmon resonance. Analyst, 2016, 141 (6), pp.1912 - 1917. ⟨10.1039/c5an02523k⟩. ⟨hal-01390154⟩