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    Langmuir-Blodgett thin film for chloroform detection

    Year: 2015

    Journal: APPLIED SURFACE SCIENCE, Vol. 350, p 129-134, 20170208

    Authors: Capan, Rifat; Goktas, Hilal; Ozbek, Zikriye; Sen, Sibel; Ozel, Mehmet Emin; Davis, Frank

    Organizations: Balikesir Univ, Fac Sci, Dept Phys, TR-10145 Balikesir, Turkey; Canakkale Onsekiz Mart Univ, Fac Sci, Dept Phys, TR-17100 Canakkale, Turkey; Canakkale Onsekiz Mart Univ, Fac Engn, Bioengn Dept, TR-17100 Canakkale, Turkey; Maltepe Univ, Vocat Sch, Dept Med Imaging Syst, Istanbul, Turkey; Cranfield Univ, Ctr Biomed Engn, Bedford MK3 0AL, England

    Calix[4]resorcinarene (C11TEA) molecules could be deposited as an LB film by the Langmuir-Blodgett (LB) technique onto suitable substrates. Surface plasmon resonance (SPR) and UV-vis spectroscopy were employed for the characterization of these LB films. A high quality and uniform Langmuir monolayer from the water surface can be transferred onto a glass or gold coated substrates with a transfer ratio of over 95%. Thickness and refractive index values of the resultant LB films were measured using surface plasmon resonance with a value of 1.04nm per layer and 1.4 respectively. For the sensing application towards chloroform, this LB film yields a fast and almost fully reversible response to chloroform in few seconds. (C) 2015 Elsevier B.V. All rights reserved.