TY - JOUR AU - Balakrishnan, K. AU - Sakthy Priya, S. AU - Lakshmanan, A. AU - Surendran, P. AU - Kannan, Karthik AU - Geetha, P. AU - Vinitha, G. AU - Praveen Kumar , P. AU - Rameshkumar, P. PY - 2023/02/23 Y2 - 2024/03/29 TI - Studies on structural, optical nonlinearity and antibacterial activity of Piperazine (bis) p-toluenesulfonate single crystal for optical limiting and biological applications: Array JF - Physics and Chemistry of Solid State JA - Phys. Chem. Sol. State VL - 24 IS - 1 SE - Scientific articles (Physics) DO - 10.15330/pcss.24.1.46-55 UR - https://journals.pnu.edu.ua/index.php/pcss/article/view/5971 SP - 46-55 AB - <p>Piperazine (bis) p-toluenesulfonate (PPTSA), an organic single crystal was synthesized and grown at environmental temperature by slow evaporation process using methanol as the solvent. The grown PPTSA crystal is from the <em>triclinic </em>system and belongs to the space group P1-. Powder X-ray diffraction was performed to ensure lattice parameters. Analysis and confirmation of functional groups and bonds were carried out through FT-IR spectral study. The optical characteristics were investigated using the UV-Vis spectrum such as the optical absorption, cut-off wavelength were calculated. The photoluminescence investigation was conducted to assess the luminous characteristics of grown crystal. The calculated NLO parameters like β, n<sub>2</sub>, and χ<sup>(3)</sup> were found to be 0.0495×10<sup>-4</sup> (<em>cm/W)</em>, 8.705×10<sup>-10</sup> (<em>cm<sup>2</sup>/W)</em>, 5.316×10<sup>-7</sup> (<em>esu)</em> and Optical Limiting threshold value was found to be 3.074×10<sup>-3</sup> (<em>Wcm<sup>-2</sup></em>). Antibacterial studies were carried out to investigate the biological significance against selected foodborne germs.</p> ER -