A Home –Made of Static Laser Scattering Experiment for Dopamine Investigations | ||||
| Delta Journal of Science | ||||
| Article 2, Volume 44, Issue 1, July 2022, Page 15-27 PDF (1.01 MB) | ||||
| Document Type: Research and Reference | ||||
| DOI: 10.21608/djs.2021.211321 | ||||
 View on SCiNiTO | ||||
| Authors | ||||
| R. Ghazy* 1; F. Shehata1; F. El-Mekawey1; N. Sayed2 | ||||
| 1Laser Lab. Physics Dept.; Faculty of Science; Tanta Univ.; Tanta; Egypt. | ||||
| 2Bio-physics Dept.; Faculty of Sciences; Cairo Univ.; Cairo; Egypt. | ||||
| Abstract | ||||
| A Self home-built of static laser scattering experiment was made to investigate the scattering effects of various polymer solutions at various concentrations to recognize the scattering parameters. The scattering parameters of a selected material such as molecular weight, the radius of gyration, and the second virial coefficient were determined at room temperature. The investigated material that we have used is Dopamine, which is known as the happiness hormone. With the aid of refractive index measurements at various concentrations, calculation of its index increment and the symmetrical behavior of the scattering phenomena with regard to the angle of the scattering, the scattering parameters are investigated. In this study we have used what is called Zimm Plot method. By using a diode laser as a light source for light scattering, a diode laser was executed at a wavelength of 650nm.The values that were assessed of the refractive index increment, the molecular weight, the second virial coefficient and the radius of gyration were observed to be 7.33ml/g, 223.555 g/mol, 0.0495651mol.ml/g2 , and 2.5836nm, sequently. | ||||
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