Adsorption of a water soluble cationic dye into a cationic Langmuir monolayer

作者：Shil Ashis; Hussain S A; Bhattacharjee D^*

来源：Journal of Physics and Chemistry of Solids, 2015, 80: 98-104.

DOI：10.1016/j.jpcs.2015.01.005

• Thin film
• Adsorption
• Clay platelets
• FIM
• AFM

This communication reports the successful adsorption of a water soluble cationic fluorescent dye Rhodamine B (RhB) into a cationic Langmuir monolayer of Octadecylamine (ODA). Anionic nano clay platelets Hectorite played an important role in the process of adsorption. Surface pressure vs. area per molecule (pi-A) isotherms were studied to monitor the adsorption process. In-situ fluorescence Imaging Microscopic (FIM) technique was employed to visualize the domain structures formed at the air-water interface. Atomic Force Microscopic (AFM) image of the monolayer Langmuir-Blodgett (LB) films were taken to study the morphology and ultrastructure of the film. Detailed spectroscopic investigations were carried out on the mono- and multilayer Langmuir-Blodgett (LB) films.

• 出版日期2015-5