SYNTHESIS OF CHITOSAN-RHODAMINE B AS POTENTIAL SOLID-STATE DYE LASER MATERIALS

• Main Author: Setiawan, Dani
• Format: Final Project
• Language: Indonesia
• Subjects: Kimia
• Online Access: https://digilib.itb.ac.id/gdl/view/5908
• Institution: Institut Teknologi Bandung

</i><b>Abstract:</b><i><br /><br /> Laser has found its applications in various fields. Laser based on dyes, which renowned as dye laser, are favorable among other types of lasers for its tunability. Dyes, such as Rhodamine B, are also abundant and inexpensive. These materials however, only give photoluminescence effects when they are dissolved in organic solvents. Thus, these lasers can not be used in certain applications due to the need for large volumes of solvents. The use of laser dyes attached chemically to solid support materials is an attractive alternative to the conventional liquid dye lasers. In this experiment, a novel material based on Rhodamine B attached chemically to chitosan as solid support, has been synthesized using two different paths of amidation reaction method: heterogeneous-phase and homogenous-phase synthesis, both under microwave radiation. These methods are simple and rapid. Unreacted Rhodamine B were removed by washing the products with water. Their infrared spectra confirmed that Rhodamine B is attached chemically to chitosan. Products obtained from these methods demonstrate luminescence effects. Further analysis on its physical and optical properties suggested that these materials are potential to be applied as lasing materials in solid-state dye laser. Photoluminescence effects given by these products is due to solvent-intracrystalline-swelled effect on Rhodamine B fluorescence emission.