Please use this identifier to cite or link to this item: http://repositorio.ufla.br/jspui/handle/1/38760
Title: Bio-inspired sensor for insect pheromone analysis based on polyaniline functionalized AFM cantilever sensor
Keywords: Sensor
Pheromone
Functionalization of cantilever
Conductive polymer
Polyaniline
Issue Date: Feb-2014
Publisher: Elsevier
Citation: STEFFENS, C. et al. Bio-inspired sensor for insect pheromone analysis based on polyaniline functionalized AFM cantilever sensor. Sensors and Actuators B: Chemical, [S.l.], v. 191, p. 643-649, Feb. 2014.
Abstract: Bio-inspired materials designed for mimicking nature has gained attention in the last years, owing to their appealing properties, such as adhesive and self-cleaning properties. However, studies reporting bio-inspired sensors able to detect minimal amounts of pheromones are still scarce. Here we report on the functionalization of AFM cantilever with polyaniline (PANI), which was used as a sensor to detect pheromone 2-heptanone. This hormone is very significant for honey bees, which release it as a repellent scent marking to avoid enemies and other bees. The functionalization of the sensor was achieved by depositing a thin film of PANI in the emeraldine state on the cantilever through spin-coating. Infrared spectroscopy showed that the 2-heptanone was adsorbed by PANI film deposited on cantilever surface. The linear response of the coated cantilever sensor regarding 2-heptanone concentration for distinct temperatures was evaluated, as well as its mechanical behavior, hysteresis and storage time. The approach proposed here to functionalize AFM cantilever with PANI film to detect 2-heptanone showed a potential methodology for designing sensors able to detect minimal amounts of pheromones and natural compounds.
URI: https://www.sciencedirect.com/science/article/pii/S0925400513012392
http://repositorio.ufla.br/jspui/handle/1/38760
Appears in Collections:DEG - Artigos publicados em periódicos

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