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

Autor(es)

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]}

Afiliação do(s) autor(es)

^[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

• Tipo de documento: Artigo Científico
• Fonte: SENSORS AND ACTUATORS B-CHEMICAL; v. 191, p. 643-649, FEB 2014.
• Citações Web of Science: 17

Resumo

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)

• Processo FAPESP: 09/08244-0 - Desenvolvimento de microcantilever funcionalizado com polímeros condutores para a detecção de vapores químicos
• Beneficiário: Clarice Steffens
• Modalidade de apoio: Bolsas no Brasil - Doutorado