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Fabrication of octyltriethoxysilane Langmuir-Blodgett thin film

K. CAN1, M. OZMEN1, L. GURFIDAN1, I.H. GUBBUK1, E. KAYMAK1, M. ERSOZ1, Z. OZBEK2, R. CAPAN2,*

Affiliation

  1. Department of Chemistry, University of Selcuk, Konya 42075, Turkey
  2. Department of Physics, University of Balikesir, Balikesir 10145, Turkey

Abstract

In the present work the monolayer properties at the air-water interface of Octyltriethoxysilane (C8TES) molecules are investigated using Langmuir isotherm graphs. Uniform and high quality Langmuir-Blodgett films of these molecules are prepared and characterized by UV-visible, atomic force microscopy and quartz crystal microbalance measurements to determine the deposition quality of these films. High transfer ratio of about 0.99 at a deposition pressure of 11 mN/m was obtained. The contact angle of water was 93.17° with a surface free energy of 23.8 mN/m. The use of soluble triethoxybased silane coupling agents under anhydrous conditions is shown to produce surfaces with a minimal number of surface defects. C8TES material has been demonstrated to produce well organised LB films and is shown to be a good candidate for application in the field of biosensors..

Keywords

B1. Organic compounds, Thin films, silane, Atomic force microscopy..

Submitted at: March 18, 2010
Accepted at: July 14, 2010

Citation

K. CAN, M. OZMEN, L. GURFIDAN, I.H. GUBBUK, E. KAYMAK, M. ERSOZ, Z. OZBEK, R. CAPAN, Fabrication of octyltriethoxysilane Langmuir-Blodgett thin film, Journal of Optoelectronics and Advanced Materials Vol. 12, Iss. 7, pp. 1552-1555 (2010)