Thin films of calix-4-resorcinarene deposited by spin coating and Langmuir-Blodgett techniques: determination of film parameters by surface plasmon resonance

HASSAN, A. K., NABOK, A. V., RAY, A. K., LUCKE, A., SMITH, K., STIRLING, C. J. M. and DAVIS, F. (1999). Thin films of calix-4-resorcinarene deposited by spin coating and Langmuir-Blodgett techniques: determination of film parameters by surface plasmon resonance. Materials Science and Engineering C, 8-9, 251-255.

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Link to published version:: 10.1016/S0928-4931(99)00014-4

Abstract

Amphiphilic calix-4-resorcinarene (C-4-RA) has been deposited as thin films using both spin coating and Langmuir-Blodgett (LB) techniques. Both LB and spin-coated films were studied by surface plasmon resonance (SPR) using Kretschmann's prism configuration, and their optical parameters have been evaluated. LB film thickness d obtained from SPR curve fitting procedure was plotted as a function of the number of layers and from this, a bi-layer thickness of 2.34 nm was determined. The thickness of spun films produced at a spinning speed of 2000 rpm is found to be equivalent to that of six to eight monolayer LB films. Both types of films were found to have a similar refractive index value of about 1.47, Using SPR technique, LB and spun films of C-4-RA of comparable thickness were found to respond in a similar manner when exposed to 400 ppm toluene vapour, indicating a structural similarity between films produced by "wet'' techniques, such as LB and spin coating. (C) 1999 Elsevier Science S.A. All rights reserved.

Item Type: Article
Research Institute, Centre or Group: Materials and Engineering Research Institute > Thin Films Research Centre > Electronic Materials and Sensors Research Group
Identification Number: 10.1016/S0928-4931(99)00014-4
Depositing User: Ann Betterton
Date Deposited: 20 Apr 2010 11:37
Last Modified: 20 Apr 2010 11:37
URI: http://shura.shu.ac.uk/id/eprint/1405

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