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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Bio-inspired sensor for insect pheromone analysis based on polyaniline functionalized AFM cantilever sensor

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Author(s):
Steffens, Clarice [1, 2] ; Manzoli, Alexandra [1] ; Oliveira, Juliano E. [3] ; Leite, Fabio L. [4] ; Correa, Daniel S. [1, 2] ; Herrmann, Paulo Sergio P. [1, 2, 5]
Total Authors: 6
Affiliation:
[1] Embrapa Instrumentat, Natl Nanotechnol Lab Agribusiness LNNA, BR-13560970 Sao Carlos, SP - Brazil
[2] Fed Univ Sao Carlos UFSCar, BR-18052780 Sao Carlos, SP - Brazil
[3] Fed Univ Paraiba UFPB, BR-58051900 Joao Pessoa, Paraiba - Brazil
[4] Fed Univ Sao Carlos UFSCar, BR-18052780 Sorocaba, SP - Brazil
[5] Forschungszentrum Julich, Embrapa Labex Europe Germany, Inst Biogeosci 2, D-52428 Julich, NWF - Germany
Total Affiliations: 5
Document type: Journal article
Source: SENSORS AND ACTUATORS B-CHEMICAL; v. 191, p. 643-649, FEB 2014.
Web of Science Citations: 17
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. (C) 2013 Elsevier B.V. All rights reserved. (AU)

FAPESP's process: 09/08244-0 - Development of functionalized microcantilever with conductive polymers for detection of chemical vapors
Grantee:Clarice Steffens
Support Opportunities: Scholarships in Brazil - Doctorate