Polypyrrole nanoparticles and dye absorption properties |
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| Affiliation: | 1. Vacuum Techniques and Thin Film Laboratory, USIC, Shivaji University, Kolhapur 416004, Maharastra, India;2. Sinhgad Institute of Technology, Pune, India;3. Department of Material Science and Engineering, Yonsei University, Seoul, Korea;4. Surface Engineering Division, CSIR-National Aerospace Laboratories, Bangalore, India;5. Thick and Thin Film Device Lab, Department of Physics, Shivaji University, Kolhapur, India;1. School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan 430074, PR China;2. Key Laboratory of Material Chemistry for Energy Conversion and Storage (Huazhong University of Science and Technology), Ministry of Education, PR China;3. Hubei Key Laboratory of Materials Chemistry and Service Failure, Wuhan 430074, PR China;1. Department of Gastroenterology, Ruijin Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, No.197, Rui Jin Er Road, Shanghai, 200025, PR China;2. Department of Colorectal Surgery, Changhai Hospital, PLA Navy Medical University, Shanghai, 200433, PR China;3. College of Science, University of Shanghai for Science and Technology, No. 334 Jungong Road, Shanghai, 200093, PR China |
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| Abstract: | Polypyrrole (PPy) nanoparticles were prepared by using microemulsion polymerization processes at 3 °C. Particle characterization was performed by using FTIR, elementary analysis, UV–vis spectra and scanning electron microscope (SEM). The size of the nanoparticles varied from about 50 to 100 to 100 to 200 nm with the change in concentration of surfactant from 0.8 to 0.44 M. Polypyrrole nanoparticles were dedoped by a 10% NaOH solution, followed by a redoping process using a nuclear fast red kernechtrot dye, which has a sulfonate group. Dedoping changed the optical absorption properties of the nanoparticles. |
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