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Chemosensors (Basel)

Title:		Ionogels Based on a Single Ionic Liquid for Electronic Nose Application
Author(s):		Goncalves WB; Cervantes EP; Padua A; Santos G; Palma S; Li RWC; Roque ACA; Gruber J;
Address:		"Departamento de Quimica Fundamental, Instituto de Quimica, Universidade de Sao Paulo, Av. Prof. Lineu Prestes, 748, Sao Paulo 05508-000, SP, Brazil. Departamento de Ciencia da Computacao, Instituto de Matematica e Estatistica, Universidade de Sao Paulo, Rua do Matao, 1010, Sao Paulo 05508-090, SP, Brazil. UCIBIO, Departamento de Quimica, Faculdade de Ciencias e Tecnologia, Universidade Nova de Lisboa, 2829-516 Caparica, Portugal. Centro Universitario UniBTA, Rua Afonso Sardinha, 201, Sao Paulo 05076-000, SP, Brazil"
Journal Title:		Chemosensors (Basel)
Year:		2021
Volume:		9
Issue:		8
Page Number:		201 -
DOI:		10.3390/chemosensors9080201
ISSN/ISBN:		2227-9040 (Print) 2227-9040 (Electronic) 2227-9040 (Linking)
Abstract:		"Ionogel are versatile materials, as they present the electrical properties of ionic liquids and also dimensional stability, since they are trapped in a solid matrix, allowing application in electronic devices such as gas sensors and electronic noses. In this work, ionogels were designed to act as a sensitive layer for the detection of volatiles in a custom-made electronic nose. Ionogels composed of gelatin and a single imidazolium ionic liquid were doped with bare and functionalized iron oxide nanoparticles, producing ionogels with adjustable target selectivity. After exposing an array of four ionogels to 12 distinct volatile organic compounds, the collected signals were analyzed by principal component analysis (PCA) and by several supervised classification methods, in order to assess the ability of the electronic nose to distinguish different volatiles, which showed accuracy above 98%"
Keywords:		composite electronic nose gas sensor ionic liquid ionogel volatile organic compound;
Notes:		"PubMed-not-MEDLINEGoncalves, Wellington B Cervantes, Evelyn P Padua, Ana C C S Santos, Goncalo Palma, Susana I C J Li, Rosamaria W C Roque, Ana C A Gruber, Jonas eng 639123/ERC_/European Research Council/International Switzerland 2022/07/21 Chemosensors (Basel). 2021 Jul 30; 9(8):201. doi: 10.3390/chemosensors9080201"