Methacrylate copolymers with pendant piperazinedione-sensing motifs as fluorescent chemosensory materials for the detection of Cr(VI) in aqueous media.
A fluorogenic sensory film, or dense membrane, capable of detecting Cr(VI), Fe(III), and Hg(II) in water was prepared. The film was prepared by a bulk radical polymerization of different comonomers, one of which contained a piperazinedione motif as sensory fluorophore. The film exhibited gel-like behavior and was highly tractable, even after being swollen in water. The sensing conditions were chosen to overcome interference from iron and mercury cations, giving rise to a material with a detection limit of 1 ppb for Cr(VI).
Departamento de Química, Facultad de Ciencias, Universidad de Burgos, Burgos, Spain.
Saúl
S
Vallejos
Asunción
A
Muñoz
Félix C
FC
García
Felipe
F
Serna
Saturnino
S
Ibeas
José M
JM
García
D002857:Chromium / Q000032:analysis*; D005456:Fluorescent Dyes / Q000737:chemistry*; D008567:Membranes, Artificial; D008689:Methacrylates / Q000737:chemistry*; D010879:Piperazines / Q000737:chemistry*; D011108:Polymers / Q000737:chemistry; D014874:Water Pollutants, Chemical / Q000032:analysis*
D005456:Fluorescent Dyes; D008567:Membranes, Artificial; D008689:Methacrylates; D010879:Piperazines; D011108:Polymers; D014874:Water Pollutants, Chemical; D002857:Chromium; C074702:chromium hexavalent ion; C003905:3,6-bis(5-chloro-2-piperidyl)-2,5-piperazinedione