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Project: Optical Sensors and Nanomaterials for Anion Recognition

Acronym: ANION
Main Objective: The main goal of this project is to develop novel anion host materials, with adequate structural features, for biomedical,
environmental and sensing applications. Based on our interest in the development of an efficient technology for water treatment we considered the possibility of
supporting the most promising anion receptors on magnetic nanoparticles, allowing their recovery using external magnetic
forces. Another goal will be the construction of a refractive index sensor based on tilted fiber Bragg gratings (TFBG)-
functionalized by the most efficient synthesized hosts or by gold nanoparticles wrapped also with anion hosts. These efforts will
be pursued in order to evaluate the potential applications of these molecules and the resultant materials to be used as anion
receptors.
This proposal aims five specific objectives having the overall goal of exploiting the anion properties of new hosts that are
stated below: (Aim 1) develop robust precursors or platforms that enable rapid development of new compounds, and build up
the target receptors based on porphyrin related compounds; (Aim 2) develop new sensors based on smaller and cheaper
commercial reagents like triazine and perfluorinated derivatives. Such new materials should be able to host different types of
anions in selective and efficient ways, through their cavities or clefts; (Aim 3) screen the most promising materials, evaluating
the anion binding properties of all new compounds/materials; assessing their hypothetic advantage as novel anion binding
agents, when compared with the present technologies; (Aim 4) prepare new nanomaterials, based on magnetic nanoparticles covered with small and cheap hosts, that can be recovered and reused; (Aim 5) translate the anion binding results in solution into the construction of novel optical fiber sensors, by wrapping a thinned fiber Bragg gratings with the best selective anion hosts synthesized, covalently or supramolecularly.
Reference: PTDC/CTM/101538/2008
Funding: FCT/PTDC
Start Date: 01-04-2010
End Date: 01-04-2013
Team: Rogério Nunes Nogueira, Carlos Alberto Ferreira Marques, Nélia Jordão Alberto, João Lemos Pinto
Groups: Optical Communications Systems – Av
Partners: Universidade de Aveiro, CICECO
Local Coordinator: Rogério Nunes Nogueira
Links: Internal Page
Associated Publications