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Preparation and characterization of poly-N-vinyl carbazole Langmuir-Blodgett films
R Singhal1, A Gambhir, S Annapoorni
1Biomolecular Electronics and Conducting Polymer Research Group, National Physical Laboratory, New Delhi, India. rsinghal@csnpl.ren.nic.in
Abstract:
Langmuir monolayers of poly-N-vinyl carbazole (PNVK) were obtained by dispensing PNVK dissolved in tetrahydrofuran onto an air-water interface. Surface pressure-area isotherms of mixed monolayer of the PNVK were studied under different subphase conditions such as temperature and pH of the subphase. It was demonstrated that the monolayer of PNVK remained stable over a temperature range of 10-40 degrees C. The area per molecule of the solid phase was found to be 31 A2. These monolayers were transferred onto indium-tin-oxide-coated glass plates and characterized by spectroscopic and electrochemical techniques.