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  • Title: Humidity adsorption kinetics of calix[4]arene derivatives measured using QCM technique.
    Author: Okur S, Kuş M, Ozel F, Aybek V, Yilmaz M.
    Journal: Talanta; 2010 Apr 15; 81(1-2):248-51. PubMed ID: 20188916.
    Abstract:
    This study focuses on the characterization of sulphonated calix[4]arene derivative films coated on a quartz substrate with a thickness of 40 nm by spin coating method for humidity detection. The humidity adsorption kinetics of the sulphonated calix[4]arene films was investigated by quartz crystal microbalance (QCM) technique. The Langmuir model was used to determine the adsorption rates and Gibbs free energy for various relative humidities between 11% and 97%. Our reproducible experimental results show that suphonated calix[4]arene films have a great potential for humidity sensing applications at room temperature operations.
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