Conference information: 2017 ISOCS/IEEE International Symposium on Olfaction and Electronic Nose (ISOEN)
Abstract: In this paper we describe the development of a novel molecularly imprinted sensor (MIS) for detection of isoborneol (ISO) in aqueous solutions. The MIS device consisted of an interdigitated microelectrode coated with a multilayered thin film of TiO2 nanoparticles and sodium sulfonated polystyrene (np-TiO2/PSS) assembled via electrostatic layer-by-layer. Isoborneol was previously imprinted within np-TiO2 that was used in the MIS assembly. Kinetics of imprinted and non-imprinted matrix were evaluated by UV-vis spectroscopy. Time dependence on adsorption was only noted after the deposition of the second bilayer, whereas for the first one almost the same amount of material was adsorbed, regardless the immersion time. Also, it was observed that the amount of np-TiO2 deposited onto the microelectrodes increases linearly with the number of np-TiO2/PSS bilayers. Moreover, pre-coating the microelectrodes enhances np-TiO2 adhesion
Template and target information: isoborneol
Author keywords: Titanium dioxide nanoparticles, isoborneol, Layer-by-layer, Molecularly imprinted sensor