Özmen, MustafaÖzbek, ZikriyeBayrakçı, MevlütErtul, ŞerefErsöz, MustafaÇapan, Rıfat2020-03-262020-03-2620140925-4005https://dx.doi.org/10.1016/j.snb.2014.01.041https://hdl.handle.net/20.500.12395/31082Characterization and organic vapor sensing properties of Langmuir-Blodgett (LB) thin films of calix[n]arene (n=4, 6, 8) derivatives are reported in this work. Surface pressure-area isotherm graph shows that very stable monolayers are formed at the water surface. The results indicate that good quality, uniform LB films can be prepared with a transfer ratio of over 0.95. Calix[n]arene LB films have been characterized by contact angle measurements, quartz crystal microbalance (QCM), scanning electron microscopy (SEM) and atomic force microscopy (AFM). LB film of calix[8]arene which has the largest cavity yields a gradient with a mass value of 773 ng per layer according to the QCM results. AFM and SEM images showed a dense surface morphology obtained for all samples. QCM system was used for the measurement of sensor response against chloroform, benzene, toluene and ethanol vapors. These LB film samples yield a response to all vapors with a large, fast, and reproducible due to the adsorption of vapors into the LB film structures. Among them, calix[8]arene LB film has higher sensitivity toward the organic vapors because of a large cavity size. This study can be concluded that the cavity size of calix[n]arene molecule could have an important role in the research area of room temperature vapor sensing devices. (C) 2014 Elsevier B.V. All rights reserved.en10.1016/j.snb.2014.01.041info:eu-repo/semantics/closedAccessCalix[n]areneVapor sensingLangmuir-BlodgettQCMArticle195156164Q1WOS:000332417600022Q1