MOF@PEDOT Composite Films for Impedimetric Pesticide Sensors

Mostrar todas las versiones(2)

Due to its deleterious effects on health, development of new methods for detection and removal of pesticide residues in primary and derived agricultural products is a research topic of great importance. Among them, imazalil (IMZ) is a widely used post-harvest fungicide with good performances in gene...

Descripción completa

Detalles Bibliográficos
Autores principales: Sappia, Luciano David, Tuninetti, Jimena Soledad, Ceolín, Marcelo Raúl, Knoll, Wolfgang, Rafti, Matías, Azzaroni, Omar
Formato: Articulo
Lenguaje:Inglés
Publicado: 2020
Materias:
Química
Composite number
Conductive polymer
Pedot:pss
Nanotechnology
Metal-organic framework
Materials science
Global challenges
Dielectric spectroscopy
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/129609
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-129609
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Química
Composite number
Conductive polymer
Pedot:pss
Nanotechnology
Metal-organic framework
Materials science
Global challenges
Dielectric spectroscopy
spellingShingle Química
Composite number
Conductive polymer
Pedot:pss
Nanotechnology
Metal-organic framework
Materials science
Global challenges
Dielectric spectroscopy
Sappia, Luciano David
Tuninetti, Jimena Soledad
Ceolín, Marcelo Raúl
Knoll, Wolfgang
Rafti, Matías
Azzaroni, Omar
MOF@PEDOT Composite Films for Impedimetric Pesticide Sensors
topic_facet Química
Composite number
Conductive polymer
Pedot:pss
Nanotechnology
Metal-organic framework
Materials science
Global challenges
Dielectric spectroscopy
description Due to its deleterious effects on health, development of new methods for detection and removal of pesticide residues in primary and derived agricultural products is a research topic of great importance. Among them, imazalil (IMZ) is a widely used post-harvest fungicide with good performances in general, and is particularly applied to prevent green mold in citrus fruits. In this work, a composite film for the impedimetric sensing of IMZ built from metal-organic framework nanocrystallites homogeneously distributed on a conductive poly(3,4-ethylene dioxythiophene) (PEDOT) layer is presented. The as-synthetized thin films are produced via spin-coating over poly(ethylene terephtalate (PET) substrate following a straightforward, cost-effective, single-step procedure. By means of impedance spectroscopy, electric transport properties of the films are studied, and high sensitivity towards IMZ concentration in the range of 15 ppb to 1 ppm is demonstrated (featuring 1.6 and 4.2 ppb limit of detection, when using signal modulus and phase, respectively). The sensing platform hereby presented could be used for the construction of portable, miniaturized, and ultrasensitive devices, suitable for pesticide detection in food, wastewater effluents, or the assessment of drinking-water quality.
format Articulo
Articulo
author Sappia, Luciano David
Tuninetti, Jimena Soledad
Ceolín, Marcelo Raúl
Knoll, Wolfgang
Rafti, Matías
Azzaroni, Omar
author_facet Sappia, Luciano David
Tuninetti, Jimena Soledad
Ceolín, Marcelo Raúl
Knoll, Wolfgang
Rafti, Matías
Azzaroni, Omar
author_sort Sappia, Luciano David
title MOF@PEDOT Composite Films for Impedimetric Pesticide Sensors
title_short MOF@PEDOT Composite Films for Impedimetric Pesticide Sensors
title_full MOF@PEDOT Composite Films for Impedimetric Pesticide Sensors
title_fullStr MOF@PEDOT Composite Films for Impedimetric Pesticide Sensors
title_full_unstemmed MOF@PEDOT Composite Films for Impedimetric Pesticide Sensors
title_sort mof@pedot composite films for impedimetric pesticide sensors
publishDate 2020
url http://sedici.unlp.edu.ar/handle/10915/129609
work_keys_str_mv AT sappialucianodavid mofpedotcompositefilmsforimpedimetricpesticidesensors
AT tuninettijimenasoledad mofpedotcompositefilmsforimpedimetricpesticidesensors
AT ceolinmarceloraul mofpedotcompositefilmsforimpedimetricpesticidesensors
AT knollwolfgang mofpedotcompositefilmsforimpedimetricpesticidesensors
AT raftimatias mofpedotcompositefilmsforimpedimetricpesticidesensors
AT azzaroniomar mofpedotcompositefilmsforimpedimetricpesticidesensors
bdutipo_str Repositorios
_version_ 1764820454613188608

Ejemplares similares