| Title: | Sexual pheromone detection using PANI.Ag nanohybrid and PANI/PSS nanocomposite nanosensors |
| Author(s): | Martinazzo J; Brezolin AN; Paschoalin RT; Soares AC; Steffens J; Steffens C; |
| Address: | "Food Engineering, URI - Erechim, Av. Sete de Setembro 1621, 99709-910 Erechim, RS, Brazil. claristeffens@yahoo.com.br. Nanotechnology National Laboratory for Agribusiness (LNNA), Embrapa Instrumentation, 13560-970 Sao Carlos, SP, Brazil. Sao Carlos Institute of Physics, University of Sao Paulo (USP), PO Box 369, 13566-590 Sao Carlos, SP, Brazil" |
| ISSN/ISBN: | 1759-9679 (Electronic) 1759-9660 (Linking) |
| Abstract: | "In this study, polyaniline/poly(styrene sulfonate) (PANI/PSS) nanocomposite and polyaniline.silver (PANI.Ag) nanohybrid thin films were obtained in cantilever nanosensors surface. The developed films were characterized in relation to topography, roughness, thickness, height, and structural properties. The topography study revealed that both films have a globular morphology, thickness and height in nanoscale. The gas sensing performance was investigated for sexual pheromone from the neotropical brown stink bug, Euschistus heros (F.). The sensitivities of both nanosensors based on PANI/PSS nanocomposite and PANI.Ag nanohybrid films were similar. The PANI.Ag nanohybrid nanosensor had a limit of detection of less than 3.1 ppq and limit of quantification of 10.05 ppq. The nanosensor layers were analyzed by UV-vis and FTIR showing the incorporation of Ag nanoparticles in the nanohybrid. We found that pheromone compound was adsorbed in sensing layer resulting in a reduction in the resonance frequency. The detection mechanism help us understand the good results of LOD, LOQ, sensitivity, selectivity and repeatability. The presented device has great potential for detection of the sexual pheromone from E. heros" |
| Keywords: | *Metal Nanoparticles *Nanocomposites Pheromones *Sex Attractants Silver; |
| Notes: | "MedlineMartinazzo, Janine Brezolin, Alexandra Nava Paschoalin, Rafaella Takehara Soares, Andrey Coatrini Steffens, Juliana Steffens, Clarice eng Research Support, Non-U.S. Gov't England 2021/09/25 Anal Methods. 2021 Sep 16; 13(35):3900-3908. doi: 10.1039/d1ay00987g" |
