Fabrication of Langmuir-Blodgett thin films of calix[4]arenes and their gas sensing properties: Investigation of upper rim para substituent effect

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dc.contributor.authorÖzmen, Mustafa
dc.contributor.authorÖzbek, Zikriye
dc.contributor.authorBüyükçelebi, Sümeyra
dc.contributor.authorBayrakçı, Mevlüt
dc.contributor.authorErtul, Şeref
dc.contributor.authorErsöz, Mustafa
dc.contributor.authorÇapan, Rıfat
dc.date.accessioned2020-03-26T18:50:44Z
dc.date.available2020-03-26T18:50:44Z
dc.date.issued2014
dc.departmentSelçuk Üniversitesien_US
dc.description.abstractThis study reports the characterization and organic vapor sensing properties of Langmuir-Blodgett (LB) thin films of calix[4] arene derivatives that contain different numbers of tert butyl groups on their upper rims. Surface pressure-area isotherms show that very stable monolayers are formed at the air-water interface. The LB films are deposited onto different substrates, which allowed us to characterize the films by contact angle measurements, quartz crystal microbalance (QCM), scanning electron microscopy (SEM), and atomic force microscopy (AFM). The results indicate that good quality, uniform LB films can be prepared with transfer ratios of over 0.95. Meanwhile, our QCM results show that the deposition of LB film layers depends heavily on the number of p-tert-butyl groups and calix[4]arene with four p-tert-butyl groups yields the highest slope with a mass value of 1145 ng per layer. Furthermore, our AFM and SEM studies reveal a dense surface morphology for all prepared LB films. The kinetic response of calix[4]arenes containing p-tert-butyl groups and without p-tert-butyl groups as an LB film to chloroform, benzene, toluene, and ethanol vapors were investigated as a function of time. After attaching tert-butyl groups onto the calix[4]arene structure, the response of LB film to chloroform vapor increased. LB films of compounds 1-4 yield a response to all vapors and more often select chloroform with a larger, faster, and more reproducible response. We thus conclude that these calix[4]arenes could be applied to research concerning vapor sensing devices operating at room temperature. (C) 2013 Elsevier B.V. All rights reserved.en_US
dc.description.sponsorshipResearch Foundation of Selcuk University (BAP)Selcuk Universityen_US
dc.description.sponsorshipThe authors would like to thank The Research Foundation of Selcuk University (BAP) for financial support of this work. We are also thankful to Cansu Ozkaya for her help during isotherm measurements.en_US
dc.identifier.doi10.1016/j.snb.2013.09.008en_US
dc.identifier.endpage511en_US
dc.identifier.issn0925-4005en_US
dc.identifier.scopusqualityQ1en_US
dc.identifier.startpage502en_US
dc.identifier.urihttps://dx.doi.org/10.1016/j.snb.2013.09.008
dc.identifier.urihttps://hdl.handle.net/20.500.12395/30865
dc.identifier.volume190en_US
dc.identifier.wosWOS:000326687700067en_US
dc.identifier.wosqualityQ1en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.language.isoenen_US
dc.publisherELSEVIER SCIENCE SAen_US
dc.relation.ispartofSENSORS AND ACTUATORS B-CHEMICALen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.selcuk20240510_oaigen_US
dc.subjectCalix[4]areneen_US
dc.subjectVapor sensingen_US
dc.subjectLangmuir-Blodgetten_US
dc.subjectQuartz crystal microbalanceen_US
dc.titleFabrication of Langmuir-Blodgett thin films of calix[4]arenes and their gas sensing properties: Investigation of upper rim para substituent effecten_US
dc.typeArticleen_US

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