Araştırma Makalesi BAUN Fen Bil. Enst. Dergisi, Cilt 18(1), 67-74, (2016) 67 Swelling behaviour of perylendiimide langmuir- blodgett films and organic vapor sensing applications Yaser AÇIKBAŞ * Department of Material Science and Nanotechnology Engineering, Faculty of Engineering, University of Usak, TURKEY Geliş Tarihi (Recived Date): 26.01.2016 Kabul Tarihi (Accepted Date): 16.02.2016 Abstract In this study, the swelling behaviours of the N,N’-(glycine tert-butylester)-3,4,9,10- perylenediimide (FY1) Langmuir-Blodgett (LB) films were investigated with respect to volatile organic compounds (VOCs) at room temperature. The sensing responses of the films against to chloroform, benzene and toluene vapors were measured by Quartz Crystal Microbalance (QCM) method. The changes in resonance frequency associated with mass changes can be attributed to the swelling behaviour of FY1 thin films during organic vapor molecules absorption. The response of FY1 LB films to the choosed VOCs has been investigated in conditions of physical properties of the solvents, and the films were obtain to be largely sensitive to chloroform vapor compared to other studied vapors. Keywords: Perylenediimide; thin films; QCM; Langmuir-Blodgett films; sensors. Perilendimid langmuir-blodgett ince filmlerin şişme davranışı ve organik buhar duyarlılık uygulamaları Özet Bu çalışmada, N,N’-(glycine tert-butylester)-3,4,9,10-perylenediimide (FY1) Langmuir- Blodgett (LB) filmlerin oda sıcaklığında uçucu organik buharlara karşı şişme davranışları incelenmiştir. Bu ince filmlerin kloroform, benzen ve toluen buharlarına karşı tepkileri Kuartz Kristal Mikrobalans tekniği kullanılarak ölçülmüştür. Organik buhar moleküllerinin absorbsiyonu esnasında kütle değişimine bağlı rezonans * Yaser AÇIKBAŞ, yaser.acikbas@usak.edu.tr, Tel: 0 (276) 221 2136.