Sexual pheromone detection using PANI·Ag nanohybrid and PANI/PSS nanocomposite nanosensors

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 propertie...

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Bibliographic Details
Published in:Analytical methods 2021-09, Vol.13 (35), p.39-398
Main Authors: Martinazzo, Janine, Brezolin, Alexandra Nava, Paschoalin, Rafaella Takehara, Soares, Andrey Coatrini, Steffens, Juliana, Steffens, Clarice
Format: Article
Language:English
Subjects:
Gas sensors
Morphology
Nanocomposites
Nanoparticles
Nanosensors
Pheromones
Polyanilines
Polystyrene resins
Selectivity
Sensitivity
Sex pheromone
Silver
Styrene
Thickness
Thin films
Topography
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Summary: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 . In this study, polyaniline/poly(styrene sulfonate) (PANI/PSS) nanocomposite and polyaniline·silver (PANI·Ag) nanohybrid thin films were obtained in cantilever nanosensors surface.
ISSN:1759-9660
1759-9679
DOI:10.1039/d1ay00987g