title: Synthesis and grafting of a BTP derivative onto a quartz crystal microbalance for lanthanide detection.
abstract: The ability of bis-triazinylpyridine (BTP) molecules to complex lanthanides is well-known in solution and can be judiciously utilized to elaborate solid sensing surfaces. This was done by synthesizing a new BTP derivative and covalently anchoring it onto gold surfaces. The BTP grafting, its chemical modification and the resultant lanthanide complexation were evaluated by combining X-ray Photoelectron Spectroscopy (XPS) and Polarization Modulation-Infrared Reflection Absorption Spectroscopy (PM-IRRAS). The detection of neodynium and europium cations was measured by a Quartz Crystal Microbalance (QCM). Interestingly, when immobilized on gold, BTP appeared to show very distinct sensitivities towards Eu(3+) and Nd(3+). Moreover, these sensitivities could be controlled by varying the pH and/or the nitrate concentration in solution. This novel strategy, consisting of the immobilization of BTP sensing molecules, is thus very promising for sensitive and specific lanthanide detection.
authors.affiliation: CNRS, UMR CNRS 7197, Laboratoire de Réactivité de Surface, France.
authors.forename: Dimitri
authors.initials: D
authors.lastname: Mercier
authors.forename: Nicolas
authors.initials: N
authors.lastname: Leconte
authors.forename: Christophe
authors.initials: C
authors.lastname: Méthivier
authors.forename: Franck
authors.initials: F
authors.lastname: Suzenet
authors.forename: Gérald
authors.initials: G
authors.lastname: Guillaumet
authors.forename: Anne
authors.initials: A
authors.lastname: Wuillaume
authors.forename: Claire-Marie
authors.initials: CM
authors.lastname: Pradier